Merge remote-tracking branch 'origin/v8/dev' into v8/bugfix/805-migrate-from-7

Better handling of default constraints
Fix tests
2019-05-29 10:14:31 +02:00 · 2019-05-29 09:19:29 +02:00 · 2019-05-28 18:40:44 +02:00 · 2019-05-28 17:49:50 +02:00 · 2019-05-28 10:58:47 +02:00 · 2019-05-28 10:52:04 +02:00
873 changed files with 18114 additions and 14245 deletions
@@ -1,14 +1,176 @@
-Umbraco Cms Build
--
----
+# Umbraco Cms Build

-# Quick!
+## Are you sure?

-To build Umbraco, fire PowerShell and move to Umbraco's repository root (the directory that contains `src`, `build`, `README.md`...). There, trigger the build with the following command:
+In order to use Umbraco as a CMS and build your website with it, you should not build it yourself. If you're reading this then you're trying to contribute to Umbraco or you're debugging a complex issue.
+
+- Are you about to create a pull request for Umbraco?
+- Are you trying to get to the bottom of a problem in your existing Umbraco installation?
+
+If the answer is yes, please read on. Otherwise, make sure to head on over [to the download page](https://our.umbraco.com/download) and start using Umbraco CMS as intended.
+
+**Table of contents**
+
+[Building from source](#building-from-source)
+  * [The quick build](#quick)
+  * [Build infrastructure](#build-infrastructure)
+    * [Properties](#properties)
+    * [GetUmbracoVersion](#getumbracoversion)
+    * [SetUmbracoVersion](#setumbracoversion)
+    * [Build](#build)
+    * [Build-UmbracoDocs](#build-umbracodocs)
+    * [Verify-NuGet](#verify-nuget)
+  * [Cleaning up](#cleaning-up)
+
+[Azure DevOps](#azure-devops)
+
+[Quirks](#quirks)
+  * [Powershell quirks](#powershell-quirks)
+  * [Git quirks](#git-quirks)
+
+
+## Building from source
+
+Did you read ["Are you sure"](#are-you-sure)?
+
+### Quick!
+
+To build Umbraco, fire up PowerShell and move to Umbraco's repository root (the directory that contains `src`, `build`, `LICENSE.md`...). There, trigger the build with the following command:

    build/build.ps1
    
-## PowerShell Quirks
+You might run into [Powershell quirks](#powershell-quirks).
+
+### Build Infrastructure
+
+The Umbraco Build infrastructure relies on a PowerShell object. The object can be retrieved with:
+
+    $ubuild = build/build.ps1 -get
+
+The object exposes various properties and methods that can be used to fine-grain build Umbraco. Some, but not all, of them are detailed below.
+    
+#### Properties
+
+The object exposes the following properties:
+
+* `SolutionRoot`: the absolute path to the solution root
+* `VisualStudio`: a Visual Studio object (see below)
+* `NuGet`: the absolute path to the NuGet executable
+* `Zip`: the absolute path to the 7Zip executable
+* `VsWhere`: the absolute path to the VsWhere executable
+* `NodePath`: the absolute path to the Node install
+* `NpmPath`: the absolute path to the Npm install
+
+The Visual Studio object is `null` when Visual Studio has not been detected (eg on VSTS). When not null, the object exposes the following properties:
+
+* `Path`: Visual Studio installation path (eg some place under `Program Files`)
+* `Major`: Visual Studio major version (eg `15` for VS 2017)
+* `Minor`: Visual Studio minor version
+* `MsBUild`: the absolute path to the MsBuild executable
+
+#### GetUmbracoVersion
+
+Gets an object representing the current Umbraco version. Example:
+
+    $v = $ubuild.GetUmbracoVersion()
+    Write-Host $v.Semver
+
+The object exposes the following properties:
+
+* `Semver`: the semver object representing the version
+* `Release`: the main part of the version (eg `7.6.33`)
+* `Comment`: the pre release part of the version (eg `alpha02`)
+* `Build`: the build number part of the version (eg `1234`)
+
+#### SetUmbracoVersion
+
+Modifies Umbraco files with the new version.
+
+>This entirely replaces the legacy `UmbracoVersion.txt` file. Do *not* edit version infos in files.
+
+The version must be a valid semver version. It can include a *pre release* part (eg `alpha02`) and/or a *build number* (eg `1234`). Examples:
+
+    $ubuild.SetUmbracoVersion("7.6.33")
+    $ubuild.SetUmbracoVersion("7.6.33-alpha.2")
+    $ubuild.SetUmbracoVersion("7.6.33+1234")
+    $ubuild.SetUmbracoVersion("7.6.33-beta.5+5678")
+
+#### Build
+
+Builds Umbraco. Temporary files are generated in `build.tmp` while the actual artifacts (zip files, NuGet packages...) are produced in `build.out`. Example:
+
+    $ubuild.Build()
+
+Some log files, such as MsBuild logs, are produced in `build.tmp` too. The `build` directory should remain clean during a build.
+
+**Note: web.config**
+
+Building Umbraco requires a clean `web.config` file in the `Umbraco.Web.UI` project. If a `web.config` file already exists, the `pre-build` task (see below) will save it as `web.config.temp-build` and replace it with a clean copy of `web.Template.config`. The original file is replaced once it is safe to do so, by the `pre-packages` task.
+
+#### Build-UmbracoDocs
+
+Builds umbraco documentation. Temporary files are generated in `build.tmp` while the actual artifacts (docs...) are produced in `build.out`. Example:
+
+    Build-UmbracoDocs
+
+Some log files, such as MsBuild logs, are produced in `build.tmp` too. The `build` directory should remain clean during a build.
+
+#### Verify-NuGet
+
+Verifies that projects all require the same version of their dependencies, and that NuSpec files require versions that are consistent with projects. Example:
+
+    Verify-NuGet
+
+### Cleaning up
+
+Once the solution has been used to run a site, one may want to "reset" the solution in order to run a fresh new site again.
+
+At the very minimum, you want
+
+    git clean -Xdf src/Umbraco.Web.UI/App_Data
+    rm src/Umbraco.Web.UI/web.config
+
+Then, a simple 'Rebuild All' in Visual Studio will recreate a fresh `web.config` but should be quite fast (since it does not really need to rebuild anything).
+
+The `clean` Git command force (`-f`) removes (`-X`, note the capital X) all files and directories (`-d`) that are ignored by Git.
+
+This will leave media files and views around, but in most cases, it will be enough.
+
+To perform a more complete clear, you will want to also delete the content of the media, views, scripts... directories.
+
+The following command will force remove all untracked files and directories, whether they are ignored by Git or not. Combined with `git reset` it can recreate a pristine working directory. 
+
+    git clean -xdf .
+    
+For git documentation see:
+* git [clean](<https://git-scm.com/docs/git-clean>)
+* git [reset](<https://git-scm.com/docs/git-reset>)
+
+## Azure DevOps
+
+Umbraco uses Azure DevOps for continuous integration, nightly builds and release builds. The Umbraco CMS project on DevOps [is available for anonymous users](https://umbraco.visualstudio.com/Umbraco%20Cms).
+
+DevOps uses the `Build-Umbraco` command several times, each time passing a different *target* parameter. The supported targets are:
+
+* `pre-build`: prepares the build
+* `compile-belle`: compiles Belle
+* `compile-umbraco`: compiles Umbraco
+* `pre-tests`: prepares the tests
+* `compile-tests`: compiles the tests
+* `pre-packages`: prepares the packages
+* `pkg-zip`: creates the zip files
+* `pre-nuget`: prepares NuGet packages
+* `pkg-nuget`: creates NuGet packages
+
+All these targets are executed when `Build-Umbraco` is invoked without a parameter (or with the `all` parameter). On VSTS, compilations (of Umbraco and tests) are performed by dedicated DevOps tasks. Similarly, creating the NuGet packages is also performed by dedicated DevOps tasks.
+
+Finally, the produced artifacts are published in two containers that can be downloaded from DevOps: `zips` contains the zip files while `nuget` contains the NuGet packages.
+
+>During a DevOps build, some environment `UMBRACO_*` variables are exported by the `pre-build` target and can be reused in other targets *and* in DevOps tasks. The `UMBRACO_TMP` environment variable is used in `Umbraco.Tests` to disable some tests that have issues with DevOps at the moment.
+
+## Quirks
+
+### PowerShell Quirks

 There is a good chance that running `build.ps1` ends up in error, with messages such as

@@ -45,120 +207,6 @@ The best solution is to unblock the Zip file before un-zipping: right-click the

    PS> Get-ChildItem -Recurse *.* | Unblock-File

-## Git Quirks
+### Git Quirks

-Git might have issues dealing with long file paths during build. You may want/need to enable `core.longpaths` support (see [this page](https://github.com/msysgit/msysgit/wiki/Git-cannot-create-a-file-or-directory-with-a-long-path) for details).
-
-# Build Infrastructure
-
-The Umbraco Build infrastructure relies on a PowerShell object. The object can be retrieved with:
-
-    $ubuild = build/build.ps1 -get
-
-The object exposes various properties and methods that can be used to fine-grain build Umbraco. Some, but not all, of them are detailed below.
-    
-## Properties
-
-The object exposes the following properties:
-
-* `SolutionRoot`: the absolute path to the solution root
-* `VisualStudio`: a Visual Studio object (see below)
-* `NuGet`: the absolute path to the NuGet executable
-* `Zip`: the absolute path to the 7Zip executable
-* `VsWhere`: the absolute path to the VsWhere executable
-* `NodePath`: the absolute path to the Node install
-* `NpmPath`: the absolute path to the Npm install
-
-The Visual Studio object is `null` when Visual Studio has not been detected (eg on VSTS). When not null, the object exposes the following properties:
-
-* `Path`: Visual Studio installation path (eg some place under `Program Files`)
-* `Major`: Visual Studio major version (eg `15` for VS 2017)
-* `Minor`: Visual Studio minor version
-* `MsBUild`: the absolute path to the MsBuild executable
-
-## GetUmbracoVersion
-
-Gets an object representing the current Umbraco version. Example:
-
-    $v = $ubuild.GetUmbracoVersion()
-    Write-Host $v.Semver
-
-The object exposes the following properties:
-
-* `Semver`: the semver object representing the version
-* `Release`: the main part of the version (eg `7.6.33`)
-* `Comment`: the pre release part of the version (eg `alpha02`)
-* `Build`: the build number part of the version (eg `1234`)
-
-## SetUmbracoVersion
-
-Modifies Umbraco files with the new version.
-
->This entirely replaces the legacy `UmbracoVersion.txt` file. Do *not* edit version infos in files.
-
-The version must be a valid semver version. It can include a *pre release* part (eg `alpha02`) and/or a *build number* (eg `1234`). Examples:
-
-    $ubuild.SetUmbracoVersion("7.6.33")
-    $ubuild.SetUmbracoVersion("7.6.33-alpha.2")
-    $ubuild.SetUmbracoVersion("7.6.33+1234")
-    $ubuild.SetUmbracoVersion("7.6.33-beta.5+5678")
-
-## Build
-
-Builds Umbraco. Temporary files are generated in `build.tmp` while the actual artifacts (zip files, NuGet packages...) are produced in `build.out`. Example:
-
-    $ubuild.Build()
-
-Some log files, such as MsBuild logs, are produced in `build.tmp` too. The `build` directory should remain clean during a build.
-
-### web.config
-
-Building Umbraco requires a clean `web.config` file in the `Umbraco.Web.UI` project. If a `web.config` file already exists, the `pre-build` task (see below) will save it as `web.config.temp-build` and replace it with a clean copy of `web.Template.config`. The original file is replaced once it is safe to do so, by the `pre-packages` task.
-
-## Build-UmbracoDocs
-
-Builds umbraco documentation. Temporary files are generated in `build.tmp` while the actual artifacts (docs...) are produced in `build.out`. Example:
-
-    Build-UmbracoDocs
-
-Some log files, such as MsBuild logs, are produced in `build.tmp` too. The `build` directory should remain clean during a build.
-
-## Verify-NuGet
-
-Verifies that projects all require the same version of their dependencies, and that NuSpec files require versions that are consistent with projects. Example:
-
-    Verify-NuGet
-
-# VSTS
-
-Continuous integration, nightly builds and release builds run on VSTS.
-
-VSTS uses the `Build-Umbraco` command several times, each time passing a different *target* parameter. The supported targets are:
-
-* `pre-build`: prepares the build
-* `compile-belle`: compiles Belle
-* `compile-umbraco`: compiles Umbraco
-* `pre-tests`: prepares the tests
-* `compile-tests`: compiles the tests
-* `pre-packages`: prepares the packages
-* `pkg-zip`: creates the zip files
-* `pre-nuget`: prepares NuGet packages
-* `pkg-nuget`: creates NuGet packages
-
-All these targets are executed when `Build-Umbraco` is invoked without a parameter (or with the `all` parameter). On VSTS, compilations (of Umbraco and tests) are performed by dedicated VSTS tasks. Similarly, creating the NuGet packages is also performed by dedicated VSTS tasks.
-
-Finally, the produced artifacts are published in two containers that can be downloaded from VSTS: `zips` contains the zip files while `nuget` contains the NuGet packages.
-
->During a VSTS build, some environment `UMBRACO_*` variables are exported by the `pre-build` target and can be reused in other targets *and* in VSTS tasks. The `UMBRACO_TMP` environment variable is used in `Umbraco.Tests` to disable some tests that have issues with VSTS at the moment.
-
-# Notes
-
-*This part needs to be cleaned up*
-
-Nightlies should use some sort of build number.
-
-We should increment versions as soon as a version is released. Ie, as soon as `7.6.33` is released, we should `Set-UmbracoVersion 7.6.34-alpha` and push.
-
-NuGet / NuSpec consistency checks are performed in tests. We should move it so it is done as part of the PowerShell script even before we try to compile and run the tests.
-
-/eof
+Git might have issues dealing with long file paths during build. You may want/need to enable `core.longpaths` support (see [this page](https://github.com/msysgit/msysgit/wiki/Git-cannot-create-a-file-or-directory-with-a-long-path) for details).
@@ -1,34 +0,0 @@
-Umbraco Cms Clear
--
----
-
-Once the solution has been used to run a site, one may want to "reset" the solution in order to run a fresh new site again.
-
-## Fast
-
-At the very minimum, you want
-
-    git clean -Xdf src/Umbraco.Web.UI/App_Data
-    rm src/Umbraco.Web.UI/web.config
-
-Then, a simple 'Rebuild All' in Visual Studio will recreate a fresh `web.config` but should be quite fast (since it does not really need to rebuild anything).
-
-The `clean` Git command force (`-f`) removes (`-X`, note the capital X) all files and directories (`-d`) that are ignored by Git.
-
-This will leave medias and views around, but in most cases, it will be enough.
-
-## More
-
-To perform a more complete clear, you will want to also delete the content of the media, views, masterpages, scripts... directories.
-
-## Full
-
-The following command will force remove all untracked files and directories, be they ignored by Git or not. Combined with `git reset` it can recreate a pristine working directory. 
-
-    git clean -xdf .
-    
-## Docs
-
-See
-* git [clean](<https://git-scm.com/docs/git-clean>)
-* git [reset](<https://git-scm.com/docs/git-reset>)
@@ -1,97 +1,187 @@
-_Looking for Umbraco version 8? [Click here](https://github.com/umbraco/Umbraco-CMS/blob/temp8/.github/V8_GETTING_STARTED.md) to go to the v8 branch_
-# Contributing to Umbraco CMS
-
-👍🎉 First off, thanks for taking the time to contribute! 🎉👍
-
-The following is a set of guidelines for contributing to Umbraco CMS.
-
-These are mostly guidelines, not rules. Use your best judgment, and feel free to propose changes to this document in a pull request.
-
-Remember, we're a friendly bunch and are happy with whatever contribution you might provide. Below are guidelines for success that we've gathered over the years. If you choose to ignore them then we still love you 💖.
-
-## Contributing code changes
-
-This document gives you a quick overview on how to get started, we will link to in-depth documentation throughout if you need some more background info.
-
-
-## Guidelines for contributions we welcome
-
-Not all changes are wanted, so on occassion we might close a PR without merging it. We will give you feedback why we can't accept your changes and we'll be nice about it, thanking you for spending your valuable time.
-
-We have [documented what we consider small and large changes](CONTRIBUTION_GUIDELINES.md). Make sure to talk to us before making large changes.
-
-Remember, if an issue is in the `Up for grabs` list or you've asked for some feedback before you sent us a PR, your PR will not be closed as unwanted.
-
-## How do I begin?
-
-Great question! The short version goes like this:
-
-  * **Fork** - create a fork of [`Umbraco-CMS` on GitHub](https://github.com/umbraco/Umbraco-CMS)
-
-  ![Fork the repository](img/forkrepository.png)
-
-  * **Clone** - when GitHub has created your fork, you can clone it in your favorite Git tool
-  
-  ![Clone the fork](img/clonefork.png)
-
-  * **Build** - build your fork of Umbraco locally as described in [building Umbraco from source code](BUILD.md)
-  * **Change** - make your changes, experiment, have fun, explore and learn, and don't be afraid. We welcome all contributions and will [happily give feedback](#questions)
-  * **Commit** - done? Yay! 🎉 It is recommended to create a new branch now and name it after the issue you're fixing, we usually follow the format: `temp-12345`. This means it's a temporary branch for the particular issue you're working on, in this case `12345`
-  * **Push** - great, now you can push the changes up to your fork on GitHub
-  * **Create pull request** - exciting! You're ready to show us your changes (or not quite ready, you just need some feedback to progress). GitHub has picked up on the new branch you've pushed and will offer to create a Pull Request. Click that green button and away you go.
-
-  ![Create a pull request](img/createpullrequest.png)
-
-### Further reading
-
-At this point you might want to [read on about contributing in depth](CONTRIBUTING_DETAILED.md). 
-
-### Reviews
-
-You've sent us your first contribution, congratulations! Now what?
-
-The [pull request team](#the-pr-team) can now start reviewing your proposed changes and give you feedback on them. If it's not perfect, we'll either fix up what we need or we can request you to make some additional changes.
-
-We have [a process in place which you can read all about](REVIEW_PROCESS.md). The very abbreviated version is:
-
- Your PR will get a reply within 48 hours
- An in-depth reply will be added within at most 2 weeks
- The PR will be either merged or rejected within at most 4 weeks
- Sometimes it is difficult to meet these timelines and we'll talk to you
-
-## Styleguides
-
-To be honest, we don't like rules very much. We trust you have the best of intentions and we encourage you to create working code. If it doesn't look perfect then we'll happily help clean it up.
-
-That said, the Umbraco development team likes to follow the hints that ReSharper gives us (no problem if you don't have this installed) and we've added a `.editorconfig` file so that Visual Studio knows what to do with whitespace, line endings, etc.
-
-## The PR team
-
-The pull request team consists of a member of Umbraco HQ, [Sebastiaan](https://github.com/nul800sebastiaan), who gets assistance from the following community members
-
- [Anders Bjerner](https://github.com/abjerner)
- [Dave Woestenborghs](https://github.com/dawoe)
- [Emma Burstow](https://github.com/emmaburstow)
- [Poornima Nayar](https://github.com/poornimanayar)
-
-These wonderful volunteers will provide you with a first reply to your PR, review and test out your changes and might ask more questions. After that they'll let Umbraco HQ know if everything seems okay. 
-
-## Questions?
-
-You can get in touch with [the PR team](#the-pr-team) in multiple ways, we love open conversations and we are a friendly bunch. No question you have is stupid. Any questions you have usually helps out multiple people with the same question. Ask away:
-
- If there's an existing issue on the issue tracker then that's a good place to leave questions and discuss how to start or move forward
- Unsure where to start? Did something not work as expected? Try leaving a note in the ["Contributing to Umbraco"](https://our.umbraco.com/forum/contributing-to-umbraco-cms/) forum, the team monitors that one closely
-
-## Code of Conduct
-
-This project and everyone participating in it is governed by the [our Code of Conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to [Sebastiaan Janssen - sj@umbraco.dk](mailto:sj@umbraco.dk).
-
-
-## Contributing to Umbraco, in depth
-
-There are other ways to contribute, and there's a few more things that you might be wondering about. We will answer the [most common questions and ways to contribute in our detailed documentation](CONTRIBUTING_DETAILED.md).
-
-## Credits
-
-This contribution guide borrows heavily from the excellent work on [the Atom contribution guide](https://github.com/atom/atom/blob/master/CONTRIBUTING.md). A big [#h5yr](http://h5yr.com/) to them!
+# Contributing to Umbraco CMS
+
+👍🎉 First off, thanks for taking the time to contribute! 🎉👍
+
+The following is a set of guidelines for contributing to Umbraco CMS.
+
+These are mostly guidelines, not rules. Use your best judgment, and feel free to propose changes to this document in a pull request.
+
+Remember, we're a friendly bunch and are happy with whatever contribution you might provide. Below are guidelines for success that we've gathered over the years. If you choose to ignore them then we still love you 💖.
+
+**Code of conduct**
+
+This project and everyone participating in it is governed by the [our Code of Conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to [Sebastiaan Janssen - sj@umbraco.dk](mailto:sj@umbraco.dk).
+
+**Table of contents**
+
+[Contributing code changes](#contributing-code-changes)
+  * [Guidelines for contributions we welcome](#guidelines-for-contributions-we-welcome)
+  * [What can I start with?](#what-can-i-start-with)
+  * [How do I begin?](#how-do-i-begin)
+  * [Pull requests](#pull-requests)
+
+[Reviews](#reviews)
+  * [Styleguides](#styleguides)
+  * [The PR team](#the-pr-team)
+  * [Questions?](#questions)
+
+[Working with the code](#working-with-the-code)
+  * [Building Umbraco from source code](#building-umbraco-from-source-code)
+  * [Working with the source code](#working-with-the-source-code)
+  * [Making changes after the PR was opened](#making-changes-after-the-pr-was-opened)
+  * [Which branch should I target for my contributions?](#which-branch-should-i-target-for-my-contributions)
+  * [Keeping your Umbraco fork in sync with the main repository](#keeping-your-umbraco-fork-in-sync-with-the-main-repository)
+
+## Contributing code changes
+
+This document gives you a quick overview on how to get started.
+
+### Guidelines for contributions we welcome
+
+Not all changes are wanted, so on occassion we might close a PR without merging it. We will give you feedback why we can't accept your changes and we'll be nice about it, thanking you for spending your valuable time.
+
+We have [documented what we consider small and large changes](CONTRIBUTION_GUIDELINES.md). Make sure to talk to us before making large changes.
+
+Remember, if an issue is in the `Up for grabs` list or you've asked for some feedback before you sent us a PR, your PR will not be closed as unwanted.
+
+### What can I start with?
+
+Unsure where to begin contributing to Umbraco? You can start by looking through [these `Up for grabs` issues](https://github.com/umbraco/Umbraco-CMS/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aopen+label%3Acommunity%2Fup-for-grabs+)
+
+### How do I begin?
+
+Great question! The short version goes like this:
+
+  * **Fork** - create a fork of [`Umbraco-CMS` on GitHub](https://github.com/umbraco/Umbraco-CMS)
+
+  ![Fork the repository](img/forkrepository.png)
+
+  * **Clone** - when GitHub has created your fork, you can clone it in your favorite Git tool
+
+  ![Clone the fork](img/clonefork.png)
+
+  * **Build** - build your fork of Umbraco locally as described in [building Umbraco from source code](BUILD.md)
+  * **Change** - make your changes, experiment, have fun, explore and learn, and don't be afraid. We welcome all contributions and will [happily give feedback](#questions)
+  * **Commit** - done? Yay! 🎉 **Important:** create a new branch now and name it after the issue you're fixing, we usually follow the format: `temp-12345`. This means it's a temporary branch for the particular issue you're working on, in this case `12345`. When you have a branch, commit your changes. Don't commit to `v8/dev`, create a new branch first.
+  * **Push** - great, now you can push the changes up to your fork on GitHub
+  * **Create pull request** - exciting! You're ready to show us your changes (or not quite ready, you just need some feedback to progress). GitHub has picked up on the new branch you've pushed and will offer to create a Pull Request. Click that green button and away you go.
+
+  ![Create a pull request](img/createpullrequest.png)
+
+### Pull requests
+The most successful pull requests usually look a like this:
+
+  * Fill in the required template
+  * Include screenshots and animated GIFs in your pull request whenever possible.
+  * Unit tests, while optional are awesome, thank you!
+  * New code is commented with documentation from which [the reference documentation](https://our.umbraco.com/documentation/Reference/) is generated
+
+Again, these are guidelines, not strict requirements.
+
+## Reviews
+
+You've sent us your first contribution, congratulations! Now what?
+
+The [pull request team](#the-pr-team) can now start reviewing your proposed changes and give you feedback on them. If it's not perfect, we'll either fix up what we need or we can request you to make some additional changes.
+
+We have [a process in place which you can read all about](REVIEW_PROCESS.md). The very abbreviated version is:
+
+- Your PR will get a reply within 48 hours
+- An in-depth reply will be added within at most 2 weeks
+- The PR will be either merged or rejected within at most 4 weeks
+- Sometimes it is difficult to meet these timelines and we'll talk to you
+
+### Styleguides
+
+To be honest, we don't like rules very much. We trust you have the best of intentions and we encourage you to create working code. If it doesn't look perfect then we'll happily help clean it up.
+
+That said, the Umbraco development team likes to follow the hints that ReSharper gives us (no problem if you don't have this installed) and we've added a `.editorconfig` file so that Visual Studio knows what to do with whitespace, line endings, etc.
+
+### The PR team
+
+The pull request team consists of a member of Umbraco HQ, [Sebastiaan](https://github.com/nul800sebastiaan), who gets assistance from the following community members
+
+- [Anders Bjerner](https://github.com/abjerner)
+- [Dave Woestenborghs](https://github.com/dawoe)
+- [Emma Burstow](https://github.com/emmaburstow)
+- [Poornima Nayar](https://github.com/poornimanayar)
+
+These wonderful volunteers will provide you with a first reply to your PR, review and test out your changes and might ask more questions. After that they'll let Umbraco HQ know if everything seems okay.
+
+### Questions?
+
+You can get in touch with [the PR team](#the-pr-team) in multiple ways, we love open conversations and we are a friendly bunch. No question you have is stupid. Any questions you have usually helps out multiple people with the same question. Ask away:
+
+- If there's an existing issue on the issue tracker then that's a good place to leave questions and discuss how to start or move forward
+- Unsure where to start? Did something not work as expected? Try leaving a note in the ["Contributing to Umbraco"](https://our.umbraco.com/forum/contributing-to-umbraco-cms/) forum, the team monitors that one closely
+
+## Working with the code
+
+### Building Umbraco from source code
+
+In order to build the Umbraco source code locally, first make sure you have the following installed.
+
+  * Visual Studio 2017 v15.9.7+
+  * Node v10+
+  * npm v6.4.1+
+
+The easiest way to get started is to run `build.ps1` which will build both the backoffice (also known as "Belle") and the Umbraco core. You can then easily start debugging from Visual Studio, or if you need to debug Belle you can run `gulp dev` in `src\Umbraco.Web.UI.Client`. See [this page](BUILD.md) for more details.
+
+Alternatively, you can open `src\umbraco.sln` in Visual Studio 2017 (version 15.9.7 or higher, [the community edition is free](https://www.visualstudio.com/thank-you-downloading-visual-studio/?sku=Community&rel=15) for you to use to contribute to Open Source projects). In Visual Studio, find the Task Runner Explorer (in the View menu under Other Windows) and run the build task under the gulpfile.
+
+![Gulp build in Visual Studio](img/gulpbuild.png)
+
+After this build completes, you should be able to hit `F5` in Visual Studio to build and run the project. A IISExpress webserver will start and the Umbraco installer will pop up in your browser, follow the directions there to get a working Umbraco install up and running.
+
+### Working with the source code
+
+Some parts of our source code are over 10 years old now. And when we say "old", we mean "mature" of course!
+
+There's two big areas that you should know about:
+
+  1. The Umbraco backoffice is a extensible AngularJS app and requires you to run a `gulp dev` command while you're working with it, so changes are copied over to the appropriate directories and you can refresh your browser to view the results of your changes.
+  You may need to run the following commands to set up gulp properly:
+  ```
+  npm cache clean --force
+  npm install
+  npm run build
+  ```
+  2. "The rest" is a C# based codebase, which is mostly ASP.NET MVC based. You can make changes, build them in Visual Studio, and hit `F5` to see the result.
+
+To find the general areas of something you're looking to fix or improve, have a look at the following two parts of the API documentation.
+
+  * [The AngularJS based backoffice files](https://our.umbraco.com/apidocs/ui/#/api) (to be found  in `src\Umbraco.Web.UI.Client\src`)
+  * [The C# application](https://our.umbraco.com/apidocs/csharp/)
+
+### Which branch should I target for my contributions?
+
+We like to use [Gitflow as much as possible](https://jeffkreeftmeijer.com/git-flow/), don't worry if you are not familiar with it. The most important thing you need to know is that when you fork the Umbraco repository, the default branch is set to something, usually `v8/dev`. Whatever the default is, that's where we'd like you to target your contributions.
+
+![Which branch should I target?](img/defaultbranch.png)
+
+### Making changes after the PR was opened
+
+If you make the corrections we ask for in the same branch and push them to your fork again, the pull request automatically updates with the additional commit(s) so we can review it again. If all is well, we'll merge the code and your commits are forever part of Umbraco!
+
+### Keeping your Umbraco fork in sync with the main repository
+
+We recommend you sync with our repository before you submit your pull request. That way, you can fix any potential merge conflicts and make our lives a little bit easier.
+
+Also, if you've submitted a pull request three weeks ago and want to work on something new, you'll want to get the latest code to build against of course.
+
+To sync your fork with this original one, you'll have to add the upstream url, you only have to do this once:
+
+```
+git remote add upstream https://github.com/umbraco/Umbraco-CMS.git
+```
+
+Then when you want to get the changes from the main repository:
+
+```
+git fetch upstream
+git rebase upstream/v8/dev
+```
+
+In this command we're syncing with the `v8/dev` branch, but you can of course choose another one if needed.
+
+(More info on how this works: [http://robots.thoughtbot.com/post/5133345960/keeping-a-git-fork-updated](http://robots.thoughtbot.com/post/5133345960/keeping-a-git-fork-updated))
@@ -1,162 +0,0 @@
-# Contributing in detail
-
-There's more than one way to contribute to Umbraco, there's some more suggestions below.
-
-When contributing code to Umbraco there's plenty of things you'll want to know, skip down to [What should I know before I get started](#what-should-i-know-before-i-get-started) for the answers to your burning questions.
-
-#### Table Of Contents
-
-[How Can I Contribute?](#how-can-i-contribute)
-  * [Reporting Bugs](#reporting-bugs)
-  * [Suggesting Enhancements](#suggesting-enhancements)
-  * [Your First Code Contribution](#your-first-code-contribution)
-  * [Pull Requests](#pull-requests)
-
-[Styleguides](#styleguides)
-
-[What should I know before I get started?](#what-should-i-know-before-i-get-started)
-  * [Working with the source code](#working-with-the-source-code)
-  * [What branch should I target for my contributions?](#what-branch-should-i-target-for-my-contributions)
-  * [Building Umbraco from source code](#building-umbraco-from-source-code)
-  * [Keeping your Umbraco fork in sync with the main repository](#keeping-your-umbraco-fork-in-sync-with-the-main-repository)
-
-## How Can I Contribute?
-
-### Reporting Bugs
-This section guides you through submitting a bug report for Umbraco CMS. Following these guidelines helps maintainers and the community understand your report 📝, reproduce the behavior 💻 💻, and find related reports 🔎.
-
-Before creating bug reports, please check [this list](#before-submitting-a-bug-report) as you might find out that you don't need to create one. When you are creating a bug report, please [include as many details as possible](#how-do-i-submit-a-good-bug-report). Fill out [the required template](https://github.com/umbraco/Umbraco-CMS/issues/new/choose), the information it asks for helps us resolve issues faster.
-
-> **Note:** If you find a **Closed** issue that seems like it is the same thing that you're experiencing, open a new issue and include a link to the original issue in the body of your new one.
-
-##### Before Submitting A Bug Report
-
-  * Most importantly, check **if you can reproduce the problem** in the [latest version of Umbraco](https://our.umbraco.com/download/). We might have already fixed your particular problem.
-  * It also helps tremendously to check if the issue you're experiencing is present in **a clean install** of the Umbraco version you're currently using. Custom code can have side-effects that don't occur in a clean install.
-  * **Use the Google**. Whatever you're experiencing, Google it plus "Umbraco" - usually you can get some pretty good hints from the search results, including open issues and further troubleshooting hints.
-  * If you do find and existing issue has **and the issue is still open**, add a comment to the existing issue if you have additional information. If you have the same problem and no new info to add, just "star" the issue.
-
-Explain the problem and include additional details to help maintainers reproduce the problem. The following is a long description which we've boiled down into a few very simple questions in the issue tracker when you create a new issue. We're listing the following hints to indicate that the most successful reports usually have a lot of this ground covered:
-
-  * **Use a clear and descriptive title** for the issue to identify the problem.
-  * **Describe the exact steps which reproduce the problem** in as many details as possible. For example, start by explaining which steps you took in the backoffice to get to a certain undesireable result, e.g. you created a document type, inherting 3 levels deep, added a certain datatype, tried to save it and you got an error.
-  * **Provide specific examples to demonstrate the steps**. If you wrote some code, try to provide a code sample as specific as possible to be able to reproduce the behavior.
-  * **Describe the behavior you observed after following the steps** and point out what exactly is the problem with that behavior.
-  * **Explain which behavior you expected to see instead and why.**
-
-Provide more context by answering these questions:
-
-  * **Can you reproduce the problem** when `debug="false"` in your `web.config` file?
-  * **Did the problem start happening recently** (e.g. after updating to a new version of Umbraco) or was this always a problem?
-  * **Can you reliably reproduce the issue?** If not, provide details about how often the problem happens and under which conditions it normally happens.
-
-Include details about your configuration and environment:
-
-  * **Which version of Umbraco are you using?**
-  * **What is the environment you're using Umbraco in?** Is this a problem on your local machine or on a server. Tell us about your configuration: Windows version, IIS/IISExpress, database type, etc.
-  * **Which packages do you have installed?**
-
-### Suggesting Enhancements
-
-This section guides you through submitting an enhancement suggestion for Umbraco, including completely new features and minor improvements to existing functionality. Following these guidelines helps maintainers and the community understand your suggestion 📝 and find related suggestions 🔎.
-
-Most of the suggestions in the [reporting bugs](#reporting-bugs) section also count for suggesting enhancements.
-
-Some additional hints that may be helpful:
-
-  * **Include screenshots and animated GIFs** which help you demonstrate the steps or point out the part of Umbraco which the suggestion is related to.
-  * **Explain why this enhancement would be useful to most Umbraco users** and isn't something that can or should be implemented as a [community package](https://our.umbraco.com/projects/).
-
-### Your First Code Contribution
-
-Unsure where to begin contributing to Umbraco? You can start by looking through [these `Up for grabs` and issues](https://issues.umbraco.org/issues?q=&project=U4&tagValue=upforgrabs&release=&issueType=&search=search) or on the [new issue tracker](https://github.com/umbraco/Umbraco-CMS/issues?q=is%3Aopen+is%3Aissue+label%3Acommunity%2Fup-for-grabs).
-
-### Pull Requests
-
-The most successful pull requests usually look a like this:
-
-  * Fill in the required template
-  * Include screenshots and animated GIFs in your pull request whenever possible.
-  * Unit tests, while optional are awesome, thank you!
-  * New code is commented with documentation from which [the reference documentation](https://our.umbraco.com/documentation/Reference/) is generated
-
-Again, these are guidelines, not strict requirements.
-
-## Making changes after the PR was opened
-
-If you make the corrections we ask for in the same branch and push them to your fork again, the pull request automatically updates with the additional commit(s) so we can review it again. If all is well, we'll merge the code and your commits are forever part of Umbraco!
-
-## Styleguides
-
-To be honest, we don't like rules very much. We trust you have the best of intentions and we encourage you to create working code. If it doesn't look perfect then we'll happily help clean it up.
-
-That said, the Umbraco development team likes to follow the hints that ReSharper gives us (no problem if you don't have this installed) and we've added a `.editorconfig` file so that Visual Studio knows what to do with whitespace, line endings, etc.
-
-## What should I know before I get started?
-
-### Working with the source code
-
-Some parts of our source code is over 10 years old now. And when we say "old", we mean "mature" of course!
-
-There's two big areas that you should know about:
-
-  1. The Umbraco backoffice is a extensible AngularJS app and requires you to run a `gulp dev` command while you're working with it, so changes are copied over to the appropriate directories and you can refresh your browser to view the results of your changes.
-  You may need to run the following commands to set up gulp properly:
-  ```
-  npm cache clean
-  npm install -g gulp
-  npm install -g gulp-cli
-  npm install
-  gulp build
-  ```
-  2. "The rest" is a C# based codebase, with some traces of our WebForms past but mostly ASP.NET MVC based these days. You can make changes, build them in Visual Studio, and hit `F5` to see the result.
-
-To find the general areas of something you're looking to fix or improve, have a look at the following two parts of the API documentation.
-
-  * [The AngularJS based backoffice files](https://our.umbraco.com/apidocs/ui/#/api) (to be found  in `src\Umbraco.Web.UI.Client\src`)
-  * [The rest](https://our.umbraco.com/apidocs/csharp/)
-
-### What branch should I target for my contributions?
-
-We like to use [Gitflow as much as possible](https://jeffkreeftmeijer.com/git-flow/), don't worry if you are not familiar with it. The most important thing you need to know is that when you fork the Umbraco repository, the default branch is set to something, usually `dev-v7`. Whatever the default is, that's where we'd like you to target your contributions.
-
-![What branch do you want me to target?](img/defaultbranch.png)
-
-### Building Umbraco from source code
-
-In order to build the Umbraco source code locally, first make sure you have the following installed.
-
-  * Visual Studio 2017 v15.3+
-  * Node v10+ (Installed via `build.bat` script. If you already have it installed, make sure you're running at least v10)
-  * npm v6.4.1+ (Installed via `build.bat` script. If you already have it installed, make sure you're running at least v6.4.1)
-
-The easiest way to get started is to run `build.bat` which will build both the backoffice (also known as "Belle") and the Umbraco core. You can then easily start debugging from Visual Studio, or if you need to debug Belle you can run `gulp dev` in `src\Umbraco.Web.UI.Client`. See [this page](BUILD.md) for more details.
-
-Alternatively, you can open `src\umbraco.sln` in Visual Studio 2017 (version 15.3 or higher, [the community edition is free](https://www.visualstudio.com/thank-you-downloading-visual-studio/?sku=Community&rel=15) for you to use to contribute to Open Source projects). In Visual Studio, find the Task Runner Explorer (in the View menu under Other Windows) and run the build task under the gulpfile.
-
-![Gulp build in Visual Studio](img/gulpbuild.png)
-
-After this build completes, you should be able to hit `F5` in Visual Studio to build and run the project. A IISExpress webserver will start and the Umbraco installer will pop up in your browser, follow the directions there to get a working Umbraco install up and running.
-
-### Keeping your Umbraco fork in sync with the main repository
-
-We recommend you sync with our repository before you submit your pull request. That way, you can fix any potential merge conflicts and make our lives a little bit easier.
-
-Also, if you've submitted a pull request three weeks ago and want to work on something new, you'll want to get the latest code to build against of course.
-
-To sync your fork with this original one, you'll have to add the upstream url, you only have to do this once:
-
-```
-git remote add upstream https://github.com/umbraco/Umbraco-CMS.git
-```
-
-Then when you want to get the changes from the main repository:
-
-```
-git fetch upstream
-git rebase upstream/dev-v7
-```
-
-In this command we're syncing with the `dev-v7` branch, but you can of course choose another one if needed.
-
-(More info on how this works: [http://robots.thoughtbot.com/post/5133345960/keeping-a-git-fork-updated](http://robots.thoughtbot.com/post/5133345960/keeping-a-git-fork-updated))
@@ -1,33 +0,0 @@
-# Contributing to Umbraco CMS
-
-When you’re considering creating a pull request for Umbraco CMS, we will categorize them in two different sizes, small and large.
-
-The process for both sizes is very similar, as [explained in the contribution document](CONTRIBUTING.md#how-do-i-begin).
-
-## Small PRs
-Bug fixes and small improvements - can be recognized by seeing a small number of changes and possibly a small number of new files.
-
-We’re usually able to handle small PRs pretty quickly. A community volunteer will do the initial review and flag it for Umbraco HQ as “community tested”. If everything looks good, it will be merged pretty quickly [as per the described process](REVIEW_PROCESS.md).
-
-### Up for grabs
-
-Umbraco HQ will regularly mark newly created issues on the issue tracker with the `Up for grabs` tag. This means that the proposed changes are wanted in Umbraco but the HQ does not have the time to make them at this time. These issues are usually small enough to fit in the "Small PRs" category and we encourage anyone to pick them up and help out.  
-
-If you do start working on something, make sure to leave a small comment on the issue saying something like: "I'm working on this". That way other people stumbling upon the issue know they don't need to pick it up, someone already has.
-
-## Large PRs
-New features and large refactorings - can be recognized by seeing a large number of changes, plenty of new files, updates to package manager files (NuGet’s packages.config, NPM’s packages.json, etc.).  
-
-We would love to follow the same process for larger PRs but this is not always possible due to time limitations and priorities that need to be aligned. We don’t want to put up any barriers, but this document should set the correct expectations.  
-
-Please make sure to describe your idea in an issue, it helps to put in mockup screenshots or videos.  
-
-If the change makes sense for HQ to include in Umbraco CMS we will leave you some feedback on how we’d like to see it being implemented. 
-
-If a larger pull request is encouraged by Umbraco HQ, the process will be similar to what is described in the [small PRs process](#small-prs) above, we’ll get feedback to you within 14 days. Finalizing and merging the PR might take longer though as it will likely need to be picked up by the development team to make sure everything is in order. We’ll keep you posted on the progress.
-
-### Pull request or package?
-
-If it doesn’t fit in CMS right now, we will likely encourage you to make it into a package instead. A package is a great way to check out popularity of a feature, learn how people use it, validate good usability and to fix bugs.  
-
-Eventually, a package could "graduate" to be included in the CMS.  
@@ -2,11 +2,20 @@

 - [ ] I have added steps to test this contribution in the description below

-If there's an existing issue for this PR then this fixes: <!-- link to the issue here! -->
+If there's an existing issue for this PR then this fixes <!-- link to the issue here! -->

 ### Description
-<!-- A description of the changes proposed in the pull-request and how to test these changes -->
+<!-- 
+    A description of the changes proposed in the pull-request and how to test these changes.

+    The most successful pull requests usually look a like this:
+
+    * Fill in this template with details: what did you do, why did you do it, how can we test the changes?
+    * Include screenshots and animated GIFs in your pull request whenever possible.
+    * Unit tests, while optional are awesome, thank you!
+
+    While these are guidelines and not strict requirements, they really help us evaluate your PR quicker.
+-->


 <!-- Thanks for contributing to Umbraco CMS! -->
@@ -1,62 +1,40 @@
-_You are browsing the Umbraco v8 branch. Umbraco 8 is currently under development._
-[![pullreminders](https://pullreminders.com/badge.svg)](https://pullreminders.com?ref=badge)
-
-_Looking for Umbraco version 7? [Click here](https://github.com/umbraco/Umbraco-CMS) to go to the v7 branch._
-
-_Ready to try out Version 8? [See the quick start guide](V8_GETTING_STARTED.md)._
-
-When is Umbraco 8 coming?
-=========================
-When it's ready. We're done with the major parts of the architecture work and are focusing on three separate tracks to prepare Umbraco 8 for release:
-1) Editor Track (_currently in progress_). Without editors, there's no market for Umbraco. So we want to make sure that Umbraco 8 is full of love for editors.
-2) Partner Track. Without anyone implementing Umbraco, there's nothing for editors to update. So we want to make sure that Umbraco 8 is a joy to implement
-3) Contributor Track. Without our fabulous ecosystem of both individual Umbracians and 3rd party ISVs, Umbraco wouldn't be as rich a platform as it is today. We want to make sure that it's easy, straight forward and as backwards-compatible as possible to create packages for Umbraco
-
-Once a track is done, we start releasing previews where we ask people to test the features we believe are ready. While the testing is going on and we gather feedback, we move on to the next track. This doesn't mean that there hasn't already been work done in the area, but that a track focuses on finalizing, polishing and preparing the features for release.
-
-Umbraco CMS
-===========
-The friendliest, most flexible and fastest growing ASP.NET CMS, and used by more than 443,000 websites worldwide: [https://umbraco.com](https://umbraco.com)
-
-[![ScreenShot](img/vimeo.png)](https://vimeo.com/172382998/)
-
-## Umbraco CMS
-Umbraco is a free open source Content Management System built on the ASP.NET platform. Our mission is to help you deliver delightful digital experiences by making Umbraco friendly, simpler and social.
-
-## Watch an introduction video
-
-[![ScreenShot](https://shop.umbraco.com/images/whatisumbraco.png)](https://umbraco.tv/videos/umbraco-v7/content-editor/basics/introduction/cms-explanation/)
-
-## Umbraco - The Friendly CMS
-
-For the first time on the Microsoft platform, there is a free user- and developer-friendly CMS that makes it quick and easy to create websites - and a breeze to build complex web applications. Umbraco has award-winning integration capabilities and supports ASP.NET MVC or Web Forms, including User and Custom Controls, right out of the box.
-
-Umbraco is not only loved by developers, but is a content editor's dream. Enjoy intuitive editing tools, media management, responsive views, and approval workflows to send your content live.
-
-Used by more than 443,000 active websites including Carlsberg, Segway, Amazon and Heinz and **The Official ASP.NET and IIS.NET website from Microsoft** ([https://asp.net](https://asp.net) / [https://iis.net](https://iis.net)), you can be sure that the technology is proven, stable and scalable. Backed by the team at Umbraco HQ, and supported by a dedicated community of over 220,000 craftspeople globally, you can trust that Umbraco is a safe choice and is here to stay.
-
-To view more examples, please visit [https://umbraco.com/case-studies-testimonials/](https://umbraco.com/case-studies-testimonials/)
-
-## Why Open Source?
-As an Open Source platform, Umbraco is more than just a CMS. We are transparent with our roadmap for future versions, our incremental sprint planning notes are publicly accessible, and community contributions and packages are available for all to use.
-
-## Trying out Umbraco CMS
-
-[Umbraco Cloud](https://umbraco.com/cloud) is the easiest and fastest way to use Umbraco yet, with full support for all your custom .NET code and integrations. You're up and running in less than a minute, and your life will be made easier with automated upgrades and a built-in deployment engine. We offer a free 14-day trial, no credit card needed.
-
-If you want to DIY, you can [download Umbraco](https://our.umbraco.com/download) either as a ZIP file or via NuGet. It's the same version of Umbraco CMS that powers Umbraco Cloud, but you'll need to find a place to host it yourself, and handling deployments and upgrades will be all up to you.
-
-## Community
-
-Our friendly community is available 24/7 at the community hub we call ["Our Umbraco"](https://our.umbraco.com). Our Umbraco features forums for questions and answers, documentation, downloadable plugins for Umbraco, and a rich collection of community resources.
-
-## Contribute to Umbraco
-
-Umbraco is contribution-focused and community-driven. If you want to contribute back to Umbraco, please check out our [guide to contributing](CONTRIBUTING.md).
-
-## Found a bug?
-
-Another way you can contribute to Umbraco is by providing issue reports. For information on how to submit an issue report refer to our [online guide for reporting issues](CONTRIBUTING_DETAILED.md#reporting-bugs).
-
-You can comment and report issues on the [github issue tracker](https://github.com/umbraco/Umbraco-CMS/issues).
-Since [September 2018](https://umbraco.com/blog/a-second-take-on-umbraco-issue-tracker-hello-github-issues/), the old issue tracker is in read-only mode, but can still be found at [http://issues.umbraco.org](http://issues.umbraco.org).
+# [Umbraco CMS](https://umbraco.com) &middot; [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](../LICENSE.md) [![Build status](https://umbraco.visualstudio.com/Umbraco%20Cms/_apis/build/status/Cms%208%20Continuous?branchName=v8/dev)](https://umbraco.visualstudio.com/Umbraco%20Cms/_build?definitionId=75) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md) [![pullreminders](https://pullreminders.com/badge.svg)](https://pullreminders.com?ref=badge)
+
+Umbraco is the friendliest, most flexible and fastest growing ASP.NET CMS, and used by more than 500,000 websites worldwide. Our mission is to help you deliver delightful digital experiences by making Umbraco friendly, simpler and social.
+
+Learn more at [umbraco.com](https://umbraco.com)
+
+<p align="center">
+  <img src="img/logo.png" alt="Umbraco Logo" />
+</p>
+
+See the official [Umbraco website](https://umbraco.com) for an introduction, core mission and values of the product and team behind it.
+
+- [Getting Started](#getting-started)
+- [Documentation](#documentation)
+- [Community](#join-the-umbraco-community)
+- [Contributing](#contributing)
+
+Please also see our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+## Getting Started
+
+[Umbraco Cloud](https://umbraco.com/cloud) is the easiest and fastest way to use Umbraco yet, with full support for all your custom .NET code and integrations. You're up and running in less than a minute, and your life will be made easier with automated upgrades and a built-in deployment engine. We offer a free 14-day trial, no credit card needed.
+
+If you want to DIY, you can [download Umbraco]((https://our.umbraco.com/download)) either as a ZIP file or via NuGet. It's the same version of Umbraco CMS that powers Umbraco Cloud, but you'll need to find a place to host it yourself, and handling deployments and upgrades will be all up to you.
+
+## Documentation
+
+The documentation for Umbraco CMS can be found [on Our Umbraco](https://our.umbraco.com/documentation/). The source for the Umbraco docs is [open source as well](https://github.com/umbraco/UmbracoDocs) and we're happy to look at your documentation contributions.
+
+## Join the Umbraco community
+
+Our friendly community is available 24/7 at the community hub we call ["Our Umbraco"](https://our.umbraco.com/). Our Umbraco features forums for questions and answers, documentation, downloadable plugins for Umbraco, and a rich collection of community resources.
+
+Besides "Our", we all support each other also via Twitter: [Umbraco HQ](https://twitter.com/umbraco), [Release Updates](https://twitter.com/umbracoproject), [#umbraco](https://twitter.com/hashtag/umbraco)
+
+
+## Contributing
+
+Umbraco is contribution-focused and community-driven. If you want to contribute back to the Umbraco source code, please check out our [guide to contributing](CONTRIBUTING.md).
+
@@ -1,25 +0,0 @@
-# Review process
-
-You're an awesome person and have sent us your contribution in the form of a pull request! It's now time to relax for a bit and wait for our response. 
-
-In order to set some expectations, here's what happens next.
-
-## Review process
-
-You will get an initial reply within 48 hours (workdays) to acknowledge that we’ve seen your PR and we’ll pick it up as soon as we can.
-
-You will get feedback within at most 14 days after opening the PR. You’ll most likely get feedback sooner though. Then there are a few possible outcomes:
-
- Your proposed change is awesome! We merge it in and it will be included in the next minor release of Umbraco
- If the change is a high priority bug fix, we will cherry-pick it into the next patch release as well so that we can release it as soon as possible
- Your proposed change is awesome but needs a bit more work, we’ll give you feedback on the changes we’d like to see
- Your proposed change is awesome but.. not something we’re looking to include at this point. We’ll close your PR and the related issue (we’ll be nice about it!)
-
-## Are you still available?
-
-We understand you have other things to do and can't just drop everything to help us out.   
-So if we’re asking for your help to improve the PR we’ll wait for two weeks to give you a fair chance to make changes. We’ll ask for an update if we don’t hear back from you after that time.  
-
-If we don’t hear back from you for 4 weeks, we’ll close the PR so that it doesn’t just hang around forever. You’re very welcome to re-open it once you have some more time to spend on it.  
-
-There will be times that we really like your proposed changes and we’ll finish the final improvements we’d like to see ourselves. You still get the credits and your commits will live on in the git repository.
@@ -1,37 +0,0 @@
-## A quick start guide for getting up and runnning with Umbraco v8
-
-### What you need:
-
-* [Visual Studio 2017 Community (Free)](https://www.visualstudio.com/vs/community/), or Professional, Enterprise, etc... _(**Minimum of Version 15.7** or higher, this is important, you WILL get issues with lesser versions)_
-* .NET Framework 4.7.2 installed, get it here: https://www.microsoft.com/net/download/thank-you/net472?survey=false
-* .NET Framework 4.7.2 developer pack, get it here: https://www.microsoft.com/net/download/thank-you/net472-developer-pack _(be sure this is the ENU file which will be named `NDP472-DevPack-ENU.exe`)_
-* Clone the Umbraco repository using the `temp8` branch. If your git client doesn't support specifying the branch as you clone then use the command `git clone --single-branch -b temp8 <your fork url>`. _(If you clone the repo using the default v7 branch and then checkout the `temp8` branch you **might** get problems)_
-
-### Start the solution
-
-* Open the `/src/umbraco.sln` Visual Studio solution
-* Start the solution (easiest way is to use `ctrl + F5`)
-* When the solution is first built this may take some time since it will restore all nuget and npm packages, build the .net solution and also build the angular solution
-* When the website starts you'll see the Umbraco installer and just follow the prompts
-* You're all set!
-
-### Want to run from a zip instead?
-
-If you just want to try out a few things, you can run the site from a zip file which you can download from here https://github.com/umbraco/Umbraco-CMS/releases/tag/temp8-cg18. 
-
-We recommend running the site with the Visual Studio since you'll be able to remain up to date with the latest source code changes.
-
-### Making code changes
-
-* _[The process for making code changes in v8 is the same as v7](https://github.com/umbraco/Umbraco-CMS/blob/dev-v7/.github/CONTRIBUTING.md)_
-* Any .NET changes you make you just need to compile
-* Any Angular/JS changes you make you will need to make sure you are running the Gulp build. Easiest way to do this is from within Visual Studio in the `Task Runner Explorer`. You can find this window by pressing `ctrl + q` and typing in `Task Runner Explorer`. In this window you'll see all Gulp tasks, double click on the `dev` task, this will compile the angular solution and start a file watcher, then any html/js changes you make are automatically built.  
-* When making js changes, you should have the chrome developer tools open to ensure that cache is disabled
-* If you are only making C# changes and are not touching the UI code at all, you can significantly speed up the VS build by adding an empty file specifically called `~/src/preserve.belle`. The UI (Belle) build will then be skipped during a Rebuild.
-
-### What to work on?
-
-We are keeping track of [known issues and limitations here](http://issues.umbraco.org/issue/U4-11279). These line items will eventually be turned into actual tasks to be worked on. Feel free to help us keep this list updated if you find issues and even help fix some of these items. If there is a particular item you'd like to help fix please mention this on the task and we'll create a sub task for the item to continue discussion there.
-
-There's [a list of tasks for v8 that haven't been completed](https://github.com/umbraco/Umbraco-CMS/labels/release%2F8.0.0). If you are interested in helping out with any of these please mention this on the task. This list will be constantly updated as we begin to document and design some of the other tasks that still need to get done.
-
@@ -161,3 +161,4 @@ build/temp/

 # eof
 /src/Umbraco.Web.UI.Client/TESTS-*.xml
+/src/ApiDocs/api/*
@@ -22,7 +22,6 @@
                  the latter would pick anything below 3.0.0 and that includes prereleases such as 3.0.0-alpha, and we do
                  not want this to happen as the alpha of the next major is, really, the next major already.
                -->
-                <dependency id="AutoMapper" version="[8.0.0,8.999999)" />
                <dependency id="LightInject" version="[5.4.0,5.999999)" />
                <dependency id="LightInject.Annotation" version="[1.1.0,1.999999)" />
                <dependency id="LightInject.Web" version="[2.0.0,2.999999)" />
@@ -40,6 +39,8 @@
                <dependency id="Serilog.Formatting.Compact.Reader" version="[1.0.3,1.999999)" />
                <dependency id="Serilog.Settings.AppSettings" version="[2.2.2,2.999999)" />
                <dependency id="Serilog.Sinks.File" version="[4.0.0,4.999999)" />
+                <dependency id="Serilog.Sinks.Map" version="[1.0.0,1.999999)" />
+                <dependency id="Serilog.Sinks.Async" version="[1.3.0,1.999999)" />
                <dependency id="Umbraco.SqlServerCE" version="[4.0.0.1,4.999999)" />
                <dependency id="NPoco" version="[3.9.4,3.999999)" />
            </group>
@@ -55,6 +56,5 @@

        <!-- symbols -->
        <file src="$BuildTmp$\bin\Umbraco.Core.pdb" target="lib" />
-        <file src="$BuildTmp$\..\src\Umbraco.Core\**\*.cs" exclude="$BuildTmp$\..\src\**\TemporaryGeneratedFile*.cs" target="src\Umbraco.Core" />
    </files>
 </package>
@@ -59,8 +59,6 @@

        <!-- symbols -->
        <file src="$BuildTmp$\bin\Umbraco.Web.pdb" target="lib" />
-        <file src="$BuildTmp$\..\src\Umbraco.Web\**\*.cs" exclude="$BuildTmp$\..\src\**\TemporaryGeneratedFile*.cs" target="src\Umbraco.Web" />
        <file src="$BuildTmp$\bin\Umbraco.Examine.pdb" target="lib" />
-        <file src="$BuildTmp$\..\src\Umbraco.Examine\**\*.cs" exclude="$BuildTmp$\..\src\**\TemporaryGeneratedFile*.cs" target="src\Umbraco.Examine" />
    </files>
 </package>
@@ -58,6 +58,7 @@
        <!-- config transforms -->
        <!-- beware! config transforms not supported by PackageReference -->
        <file src="tools\Web.config.install.xdt" target="Content\Web.config.install.xdt" />
+        <file src="tools\serilog.config.install.xdt" target="Content\config\serilog.config.install.xdt" />
        <file src="tools\ClientDependency.config.install.xdt" target="Content\config\ClientDependency.config.install.xdt" />
        <file src="tools\umbracoSettings.config.install.xdt" target="Content\config\umbracoSettings.config.install.xdt" />
        <file src="tools\Views.Web.config.install.xdt" target="Views\Web.config.install.xdt" /> <!-- FIXME: Content\ !! and then... transform?! -->
@@ -1,12 +1,13 @@

-  _    _ __  __ ____  _____           _____ ____
- | |  | |  \/  |  _ \|  __ \    /\   / ____/ __ \
- | |  | | \  / | |_) | |__) |  /  \ | |   | |  | |
- | |  | | |\/| |  _ <|  _  /  / /\ \| |   | |  | |
- | |__| | |  | | |_) | | \ \ / ____ | |___| |__| |
-  \____/|_|  |_|____/|_|  \_/_/    \_\_____\____/
+                       888                                         
+                       888                                         
+888  888 88888b.d88b.  88888b.  888d888  8888b.   .d8888b  .d88b.  
+888  888 888 "888 "88b 888 "88b 888P"       "88b d88P"    d88""88b 
+888  888 888  888  888 888  888 888     .d888888 888      888  888 
+Y88b 888 888  888  888 888 d88P 888     888  888 Y88b.    Y88..88P 
+ "Y88888 888  888  888 88888P"  888     "Y888888  "Y8888P  "Y88P"  

----------------------------------------------------
+------------------------------------------------------------------

 Don't forget to build!

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">>
+    <appSettings>
+
+        <add key="serilog:using:File" value="Umbraco.Core" xdt:Transform="SetAttributes(value)" xdt:Locator="Match(key)"/>
+        <add key="serilog:write-to:File.shared" xdt:Transform="Remove" xdt:Locator="Match(key)"/>
+
+    </appSettings>
+</configuration>
@@ -0,0 +1,44 @@
+$uenv=build/build.ps1 -get
+
+$src = "$($uenv.SolutionRoot)\src"
+$tmp = $uenv.BuildTemp
+$out = $uenv.BuildOutput
+$DocFxJson = "$src\ApiDocs\docfx.json"
+$DocFxSiteOutput = "$tmp\_site\*.*"
+
+################ Do the UI docs
+$uenv.CompileBelle()
+
+"Moving to Umbraco.Web.UI.Client folder"
+cd .\src\Umbraco.Web.UI.Client
+
+"Generating the docs and waiting before executing the next commands"
+& gulp docs | Out-Null
+
+# change baseUrl
+$BaseUrl = "https://our.umbraco.com/apidocs/v8/ui/"
+$IndexPath = "./docs/api/index.html"
+(Get-Content $IndexPath).replace('location.href.replace(rUrl, indexFile)', "`'" + $BaseUrl + "`'") | Set-Content $IndexPath
+
+# zip it
+& $uenv.BuildEnv.Zip a -tzip -r "$out\ui-docs.zip" "$src\Umbraco.Web.UI.Client\docs\api\*.*"
+
+
+################ Do the c# docs
+
+# Build the solution in debug mode
+$SolutionPath = Join-Path -Path $src -ChildPath "umbraco.sln"
+#$uenv.CompileUmbraco()
+
+#restore nuget packages
+$uenv.RestoreNuGet()
+
+# run DocFx
+$DocFx = $uenv.BuildEnv.DocFx
+
+Write-Host "$DocFxJson"
+& $DocFx metadata $DocFxJson
+& $DocFx build $DocFxJson
+
+# zip it
+& $uenv.BuildEnv.Zip a -tzip -r "$out\csharp-docs.zip" $DocFxSiteOutput
@@ -11,11 +11,21 @@
    [Alias("loc")]
    [switch] $local = $false,

+	# enable docfx
+    [Parameter(Mandatory=$false)]
+    [Alias("doc")]
+    [switch] $docfx = $false,
+	
    # keep the build directories, don't clear them
    [Parameter(Mandatory=$false)]
    [Alias("c")]
    [Alias("cont")]
-    [switch] $continue = $false
+    [switch] $continue = $false,
+
+    # execute a command
+    [Parameter(Mandatory=$false, ValueFromRemainingArguments=$true)]
+    [String[]]
+    $command
  )

  # ################################################################
@@ -26,7 +36,7 @@
  $ubuild = &"$PSScriptRoot\build-bootstrap.ps1"
  if (-not $?) { return }
  $ubuild.Boot($PSScriptRoot,
-    @{ Local = $local; },
+    @{ Local = $local; WithDocFx = $docfx },
    @{ Continue = $continue })
  if ($ubuild.OnError()) { return }

@@ -382,13 +392,13 @@
    &$this.BuildEnv.NuGet Pack "$nuspecs\UmbracoCms.Core.nuspec" `
        -Properties BuildTmp="$($this.BuildTemp)" `
        -Version "$($this.Version.Semver.ToString())" `
-        -Symbols -Verbosity detailed -outputDirectory "$($this.BuildOutput)" > "$($this.BuildTemp)\nupack.cmscore.log"
+        -Symbols -SymbolPackageFormat snupkg -Verbosity detailed -outputDirectory "$($this.BuildOutput)" > "$($this.BuildTemp)\nupack.cmscore.log"
    if (-not $?) { throw "Failed to pack NuGet UmbracoCms.Core." }

    &$this.BuildEnv.NuGet Pack "$nuspecs\UmbracoCms.Web.nuspec" `
        -Properties BuildTmp="$($this.BuildTemp)" `
        -Version "$($this.Version.Semver.ToString())" `
-        -Symbols -Verbosity detailed -outputDirectory "$($this.BuildOutput)" > "$($this.BuildTemp)\nupack.cmsweb.log"
+        -Symbols -SymbolPackageFormat snupkg -Verbosity detailed -outputDirectory "$($this.BuildOutput)" > "$($this.BuildTemp)\nupack.cmsweb.log"
    if (-not $?) { throw "Failed to pack NuGet UmbracoCms.Web." }

    &$this.BuildEnv.NuGet Pack "$nuspecs\UmbracoCms.nuspec" `
@@ -419,6 +429,53 @@
    Write-Host "Prepare Azure Gallery"
    $this.CopyFile("$($this.SolutionRoot)\build\Azure\azuregalleryrelease.ps1", $this.BuildOutput)
  })
+  
+  $ubuild.DefineMethod("PrepareCSharpDocs",
+  {
+    Write-Host "Prepare C# Documentation"
+	
+    $src = "$($this.SolutionRoot)\src"
+      $tmp = $this.BuildTemp
+      $out = $this.BuildOutput
+    $DocFxJson = Join-Path -Path $src "\ApiDocs\docfx.json"
+    $DocFxSiteOutput = Join-Path -Path $tmp "\_site\*.*"
+	
+
+	#restore nuget packages
+	$this.RestoreNuGet()
+    # run DocFx
+    $DocFx = $this.BuildEnv.DocFx
+    
+    & $DocFx metadata $DocFxJson
+    & $DocFx build $DocFxJson
+
+    # zip it
+    & $this.BuildEnv.Zip a -tzip -r "$out\csharp-docs.zip" $DocFxSiteOutput
+  })
+  
+  $ubuild.DefineMethod("PrepareAngularDocs",
+  {
+    Write-Host "Prepare Angular Documentation"
+	
+    $src = "$($this.SolutionRoot)\src"
+      $out = $this.BuildOutput
+    
+    $this.CompileBelle()
+
+    "Moving to Umbraco.Web.UI.Client folder"
+    cd .\src\Umbraco.Web.UI.Client
+
+    "Generating the docs and waiting before executing the next commands"
+    & gulp docs | Out-Null
+
+    # change baseUrl
+    $BaseUrl = "https://our.umbraco.com/apidocs/v8/ui/"
+    $IndexPath = "./docs/api/index.html"
+    (Get-Content $IndexPath).replace('location.href.replace(rUrl, indexFile)', "`'" + $BaseUrl + "`'") | Set-Content $IndexPath
+
+    # zip it
+    & $this.BuildEnv.Zip a -tzip -r "$out\ui-docs.zip" "$src\Umbraco.Web.UI.Client\docs\api\*.*"
+  })

  $ubuild.DefineMethod("Build",
  {
@@ -451,6 +508,7 @@
    if ($this.OnError()) { return }
    $this.PostPackageHook()
    if ($this.OnError()) { return }
+
    Write-Host "Done"
  })

@@ -475,7 +533,11 @@
  # run
  if (-not $get)
  {
-    $ubuild.Build()
+    if ($command.Length -eq 0)
+    {
+      $command = @( "Build" )
+    }
+    $ubuild.RunMethod($command);
    if ($ubuild.OnError()) { return }
  }
  if ($get) { return $ubuild }
@@ -2,21 +2,20 @@
  "metadata": [
    {
      "src": [
-        {
+        { 
+          "src": "../",
          "files": [
            "Umbraco.Core/Umbraco.Core.csproj",
            "Umbraco.Web/Umbraco.Web.csproj"
          ],
          "exclude": [
            "**/obj/**",
-            "**/bin/**",
-            "_site/**"
-          ],
-          "cwd": "../src"
+            "**/bin/**"
+          ]
        }
      ],
-      "dest": "../apidocs/api",
-      "filter": "../apidocs/docfx.filter.yml"
+      "dest": "api",
+      "filter": "docfx.filter.yml"
    }
  ],
  "build": {
@@ -35,19 +34,7 @@
          "*.md"
        ],
        "exclude": [
-          "obj/**",
-          "_site/**"
-        ]
-      }
-    ],
-    "resource": [
-      {
-        "files": [
-          "images/**"
-        ],
-        "exclude": [
-          "obj/**",
-          "_site/**"
+          "obj/**"
        ]
      }
    ],
@@ -57,8 +44,7 @@
          "**.md"
        ],
        "exclude": [
-          "obj/**",
-          "_site/**"
+          "obj/**"
        ]
      }
    ],
@@ -67,9 +53,9 @@
      "_enableSearch": true,
      "_disableContribution": false
    },
-    "dest": "_site",
+    "dest": "../../build.tmp/_site",
    "template": [
      "default", "umbracotemplate"
    ]
  }
-}
+}
@@ -18,5 +18,5 @@ using System.Resources;
 [assembly: AssemblyVersion("8.0.0")]

 // these are FYI and changed automatically
-[assembly: AssemblyFileVersion("8.0.1")]
-[assembly: AssemblyInformationalVersion("8.0.1")]
+[assembly: AssemblyFileVersion("8.1.0")]
+[assembly: AssemblyInformationalVersion("8.1.0")]
@@ -1,10 +1,10 @@
 using System;
 using System.Reflection;
-using System.Text.RegularExpressions;
 using System.Web;
 using Umbraco.Core;

-[assembly: PreApplicationStartMethod(typeof(BindingRedirects), "Initialize")]
+// no binding redirect for now = de-activate
+//[assembly: PreApplicationStartMethod(typeof(BindingRedirects), "Initialize")]

 namespace Umbraco.Core
 {
@@ -18,7 +18,7 @@ namespace Umbraco.Core
            // this only gets called when an assembly can't be resolved
            AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
        }
-        
+
        /// <summary>
        /// This is used to do an assembly binding redirect via code - normally required due to signature changes in assemblies
        /// </summary>
@@ -27,14 +27,19 @@ namespace Umbraco.Core
        /// <returns></returns>
        private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
        {
+            // When an assembly can't be resolved. In here we can do magic with the assembly name and try loading another.
+
+            // keep here for reference - we don't use AutoMapper
+            /*
            //AutoMapper:
+            // this is used for loading a signed assembly of AutoMapper (v. 3.1+) without having to recompile old code.
            // ensure the assembly is indeed AutoMapper and that the PublicKeyToken is null before trying to Load again
            // do NOT just replace this with 'return Assembly', as it will cause an infinite loop -> stackoverflow
            if (args.Name.StartsWith("AutoMapper") && args.Name.EndsWith("PublicKeyToken=null"))
                return Assembly.Load(args.Name.Replace(", PublicKeyToken=null", ", PublicKeyToken=be96cd2c38ef1005"));
+            */

            return null;
-
        }
    }
 }
@@ -2,7 +2,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using Umbraco.Core.Models.Entities;
-using Umbraco.Core.Scoping;

 namespace Umbraco.Core.Cache
 {
@@ -13,11 +12,6 @@ namespace Umbraco.Core.Cache

        public static NoCacheRepositoryCachePolicy<TEntity, TId> Instance { get; } = new NoCacheRepositoryCachePolicy<TEntity, TId>();

-        public IRepositoryCachePolicy<TEntity, TId> Scoped(IAppPolicyCache runtimeCache, IScope scope)
-        {
-            throw new NotImplementedException();
-        }
-
        public TEntity Get(TId id, Func<TId, TEntity> performGet, Func<TId[], IEnumerable<TEntity>> performGetAll)
        {
            return performGet(id);
@@ -44,21 +44,22 @@ namespace Umbraco.Core.Compose
        public void Terminate()
        { }

+        internal static IUser UnknownUser => new User { Id = Constants.Security.UnknownUserId, Name = Constants.Security.UnknownUserName, Email = "" };
+
        private IUser CurrentPerformingUser
        {
            get
            {
                var identity = Thread.CurrentPrincipal?.GetUmbracoIdentity();
-                return identity == null
-                    ? new User { Id = 0, Name = "SYSTEM", Email = "" }
-                    : _userService.GetUserById(Convert.ToInt32(identity.Id));
+                var user = identity == null ? null : _userService.GetUserById(Convert.ToInt32(identity.Id));
+                return user ?? UnknownUser;
            }
        }

        private IUser GetPerformingUser(int userId)
        {
            var found = userId >= 0 ? _userService.GetUserById(userId) : null;
-            return found ?? new User {Id = 0, Name = "SYSTEM", Email = ""};
+            return found ?? UnknownUser;
        }

        private string PerformingIp
@@ -22,7 +22,7 @@ namespace Umbraco.Core.Compose

        private static void ContentService_Moved(IContentService sender, MoveEventArgs<IContent> e)
        {
-            foreach (var item in e.MoveInfoCollection.Where(x => x.OriginalPath.Contains(Constants.System.RecycleBinContent.ToInvariantString())))
+            foreach (var item in e.MoveInfoCollection.Where(x => x.OriginalPath.Contains(Constants.System.RecycleBinContentString)))
            {
                var relationService = Current.Services.RelationService;
                const string relationTypeAlias = Constants.Conventions.RelationTypes.RelateParentDocumentOnDeleteAlias;
@@ -37,7 +37,7 @@ namespace Umbraco.Core.Compose

        private static void MediaService_Moved(IMediaService sender, MoveEventArgs<IMedia> e)
        {
-            foreach (var item in e.MoveInfoCollection.Where(x => x.OriginalPath.Contains(Constants.System.RecycleBinMedia.ToInvariantString())))
+            foreach (var item in e.MoveInfoCollection.Where(x => x.OriginalPath.Contains(Constants.System.RecycleBinMediaString)))
            {
                var relationService = Current.Services.RelationService;
                const string relationTypeAlias = Constants.Conventions.RelationTypes.RelateParentMediaFolderOnDeleteAlias;
@@ -70,7 +70,23 @@ namespace Umbraco.Core.Composing
            }
        }

-        private IEnumerable<Type> PrepareComposerTypes()
+        internal IEnumerable<Type> PrepareComposerTypes()
+        {
+            var requirements = GetRequirements();
+
+            // only for debugging, this is verbose
+            //_logger.Debug<Composers>(GetComposersReport(requirements));
+
+            var sortedComposerTypes = SortComposers(requirements);
+
+            // bit verbose but should help for troubleshooting
+            //var text = "Ordered Composers: " + Environment.NewLine + string.Join(Environment.NewLine, sortedComposerTypes) + Environment.NewLine;
+            _logger.Debug<Composers>("Ordered Composers: {SortedComposerTypes}", sortedComposerTypes);
+
+            return sortedComposerTypes;
+        }
+
+        internal Dictionary<Type, List<Type>> GetRequirements(bool throwOnMissing = true)
        {
            // create a list, remove those that cannot be enabled due to runtime level
            var composerTypeList = _composerTypes
@@ -89,25 +105,69 @@ namespace Umbraco.Core.Composing
            // enable or disable composers
            EnableDisableComposers(composerTypeList);

-            // sort the composers according to their dependencies
-            var requirements = new Dictionary<Type, List<Type>>();
-            foreach (var type in composerTypeList) requirements[type] = null;
-            foreach (var type in composerTypeList)
+            void GatherInterfaces<TAttribute>(Type type, Func<TAttribute, Type> getTypeInAttribute, HashSet<Type> iset, List<Type> set2)
+                where TAttribute : Attribute
            {
-                GatherRequirementsFromRequireAttribute(type, composerTypeList, requirements);
-                GatherRequirementsFromRequiredByAttribute(type, composerTypeList, requirements);
+                foreach (var attribute in type.GetCustomAttributes<TAttribute>())
+                {
+                    var typeInAttribute = getTypeInAttribute(attribute);
+                    if (typeInAttribute != null && // if the attribute references a type ...
+                        typeInAttribute.IsInterface && // ... which is an interface ...
+                        typeof(IComposer).IsAssignableFrom(typeInAttribute) && // ... which implements IComposer ...
+                        !iset.Contains(typeInAttribute)) // ... which is not already in the list
+                    {
+                        // add it to the new list
+                        iset.Add(typeInAttribute);
+                        set2.Add(typeInAttribute);
+
+                        // add all its interfaces implementing IComposer
+                        foreach (var i in typeInAttribute.GetInterfaces().Where(x => typeof(IComposer).IsAssignableFrom(x)))
+                        {
+                            iset.Add(i);
+                            set2.Add(i);
+                        }
+                    }
+                }
            }

-            // only for debugging, this is verbose
-            //_logger.Debug<Composers>(GetComposersReport(requirements));
+            // gather interfaces too
+            var interfaces = new HashSet<Type>(composerTypeList.SelectMany(x => x.GetInterfaces().Where(y => typeof(IComposer).IsAssignableFrom(y))));
+            composerTypeList.AddRange(interfaces);
+            var list1 = composerTypeList;
+            while (list1.Count > 0)
+            {
+                var list2 = new List<Type>();
+                foreach (var t in list1)
+                {
+                    GatherInterfaces<ComposeAfterAttribute>(t, a => a.RequiredType, interfaces, list2);
+                    GatherInterfaces<ComposeBeforeAttribute>(t, a => a.RequiringType, interfaces, list2);
+                }
+                composerTypeList.AddRange(list2);
+                list1 = list2;
+            }

+            // sort the composers according to their dependencies
+            var requirements = new Dictionary<Type, List<Type>>();
+            foreach (var type in composerTypeList)
+                requirements[type] = null;
+            foreach (var type in composerTypeList)
+            {
+                GatherRequirementsFromAfterAttribute(type, composerTypeList, requirements, throwOnMissing);
+                GatherRequirementsFromBeforeAttribute(type, composerTypeList, requirements);
+            }
+
+            return requirements;
+        }
+
+        internal IEnumerable<Type> SortComposers(Dictionary<Type, List<Type>> requirements)
+        {
            // sort composers
            var graph = new TopoGraph<Type, KeyValuePair<Type, List<Type>>>(kvp => kvp.Key, kvp => kvp.Value);
            graph.AddItems(requirements);
            List<Type> sortedComposerTypes;
            try
            {
-                sortedComposerTypes = graph.GetSortedItems().Select(x => x.Key).ToList();
+                sortedComposerTypes = graph.GetSortedItems().Select(x => x.Key).Where(x => !x.IsInterface).ToList();
            }
            catch (Exception e)
            {
@@ -117,40 +177,37 @@ namespace Umbraco.Core.Composing
                throw;
            }

-            // bit verbose but should help for troubleshooting
-            //var text = "Ordered Composers: " + Environment.NewLine + string.Join(Environment.NewLine, sortedComposerTypes) + Environment.NewLine;
-            _logger.Debug<Composers>("Ordered Composers: {SortedComposerTypes}", sortedComposerTypes);
-
            return sortedComposerTypes;
        }

-        private static string GetComposersReport(Dictionary<Type, List<Type>> requirements)
+        internal static string GetComposersReport(Dictionary<Type, List<Type>> requirements)
        {
            var text = new StringBuilder();
            text.AppendLine("Composers & Dependencies:");
+            text.AppendLine("  <  compose before");
+            text.AppendLine("  >  compose after");
+            text.AppendLine("  :  implements");
+            text.AppendLine("  =  depends");
            text.AppendLine();

+            bool HasReq(IEnumerable<Type> types, Type type)
+                => types.Any(x => type.IsAssignableFrom(x) && !x.IsInterface);
+
            foreach (var kvp in requirements)
            {
                var type = kvp.Key;

                text.AppendLine(type.FullName);
                foreach (var attribute in type.GetCustomAttributes<ComposeAfterAttribute>())
-                    text.AppendLine("  -> " + attribute.RequiredType + (attribute.Weak.HasValue
-                        ? (attribute.Weak.Value ? " (weak)" : (" (strong" + (requirements.ContainsKey(attribute.RequiredType) ? ", missing" : "") + ")"))
-                        : ""));
-                foreach (var attribute in type.GetCustomAttributes<ComposeBeforeAttribute>())
-                    text.AppendLine("  -< " + attribute.RequiringType);
-                foreach (var i in type.GetInterfaces())
                {
-                    text.AppendLine("  : " + i.FullName);
-                    foreach (var attribute in i.GetCustomAttributes<ComposeAfterAttribute>())
-                        text.AppendLine("    -> " + attribute.RequiredType + (attribute.Weak.HasValue
-                            ? (attribute.Weak.Value ? " (weak)" : (" (strong" + (requirements.ContainsKey(attribute.RequiredType) ? ", missing" : "") + ")"))
-                            : ""));
-                    foreach (var attribute in i.GetCustomAttributes<ComposeBeforeAttribute>())
-                        text.AppendLine("    -< " + attribute.RequiringType);
+                    var weak = !(attribute.RequiredType.IsInterface ? attribute.Weak == false : attribute.Weak != true);
+                    text.AppendLine("  > " + attribute.RequiredType +
+                        (weak ? " (weak" : " (strong") + (HasReq(requirements.Keys, attribute.RequiredType) ? ", found" : ", missing") + ")");
                }
+                foreach (var attribute in type.GetCustomAttributes<ComposeBeforeAttribute>())
+                    text.AppendLine("  < " + attribute.RequiringType);
+                foreach (var i in type.GetInterfaces())
+                    text.AppendLine("  : " + i.FullName);
                if (kvp.Value != null)
                    foreach (var t in kvp.Value)
                        text.AppendLine("  = " + t);
@@ -221,16 +278,16 @@ namespace Umbraco.Core.Composing
                types.Remove(kvp.Key);
        }

-        private static void GatherRequirementsFromRequireAttribute(Type type, ICollection<Type> types, IDictionary<Type, List<Type>> requirements)
+        private static void GatherRequirementsFromAfterAttribute(Type type, ICollection<Type> types, IDictionary<Type, List<Type>> requirements, bool throwOnMissing = true)
        {
            // get 'require' attributes
            // these attributes are *not* inherited because we want to "custom-inherit" for interfaces only
-            var requireAttributes = type
+            var afterAttributes = type
                .GetInterfaces().SelectMany(x => x.GetCustomAttributes<ComposeAfterAttribute>()) // those marking interfaces
                .Concat(type.GetCustomAttributes<ComposeAfterAttribute>()); // those marking the composer

            // what happens in case of conflicting attributes (different strong/weak for same type) is not specified.
-            foreach (var attr in requireAttributes)
+            foreach (var attr in afterAttributes)
            {
                if (attr.RequiredType == type) continue; // ignore self-requirements (+ exclude in implems, below)

@@ -238,13 +295,13 @@ namespace Umbraco.Core.Composing
                // unless strong, and then require at least one enabled composer implementing that interface
                if (attr.RequiredType.IsInterface)
                {
-                    var implems = types.Where(x => x != type && attr.RequiredType.IsAssignableFrom(x)).ToList();
+                    var implems = types.Where(x => x != type && attr.RequiredType.IsAssignableFrom(x) && !x.IsInterface).ToList();
                    if (implems.Count > 0)
                    {
                        if (requirements[type] == null) requirements[type] = new List<Type>();
                        requirements[type].AddRange(implems);
                    }
-                    else if (attr.Weak == false) // if explicitly set to !weak, is strong, else is weak
+                    else if (attr.Weak == false && throwOnMissing) // if explicitly set to !weak, is strong, else is weak
                        throw new Exception($"Broken composer dependency: {type.FullName} -> {attr.RequiredType.FullName}.");
                }
                // requiring a class = require that the composer is enabled
@@ -256,28 +313,28 @@ namespace Umbraco.Core.Composing
                        if (requirements[type] == null) requirements[type] = new List<Type>();
                        requirements[type].Add(attr.RequiredType);
                    }
-                    else if (attr.Weak != true) // if not explicitly set to weak, is strong
+                    else if (attr.Weak != true && throwOnMissing) // if not explicitly set to weak, is strong
                        throw new Exception($"Broken composer dependency: {type.FullName} -> {attr.RequiredType.FullName}.");
                }
            }
        }

-        private static void GatherRequirementsFromRequiredByAttribute(Type type, ICollection<Type> types, IDictionary<Type, List<Type>> requirements)
+        private static void GatherRequirementsFromBeforeAttribute(Type type, ICollection<Type> types, IDictionary<Type, List<Type>> requirements)
        {
            // get 'required' attributes
            // these attributes are *not* inherited because we want to "custom-inherit" for interfaces only
-            var requiredAttributes = type
+            var beforeAttributes = type
                .GetInterfaces().SelectMany(x => x.GetCustomAttributes<ComposeBeforeAttribute>()) // those marking interfaces
                .Concat(type.GetCustomAttributes<ComposeBeforeAttribute>()); // those marking the composer

-            foreach (var attr in requiredAttributes)
+            foreach (var attr in beforeAttributes)
            {
                if (attr.RequiringType == type) continue; // ignore self-requirements (+ exclude in implems, below)

                // required by an interface = by any enabled composer implementing this that interface
                if (attr.RequiringType.IsInterface)
                {
-                    var implems = types.Where(x => x != type && attr.RequiringType.IsAssignableFrom(x)).ToList();
+                    var implems = types.Where(x => x != type && attr.RequiringType.IsAssignableFrom(x) && !x.IsInterface).ToList();
                    foreach (var implem in implems)
                    {
                        if (requirements[implem] == null) requirements[implem] = new List<Type>();
@@ -133,7 +133,11 @@ namespace Umbraco.Core.Composing

            Configs.RegisterWith(_register);

-            return _register.CreateFactory();
+            IFactory factory = null;
+            // ReSharper disable once AccessToModifiedClosure -- on purpose
+            _register.Register(_ => factory, Lifetime.Singleton);
+            factory = _register.CreateFactory();
+            return factory;
        }

        /// <summary>
@@ -1,4 +1,4 @@
-using AutoMapper;
+using Umbraco.Core.Mapping;
 using Umbraco.Core.Models.Identity;

 namespace Umbraco.Core.Composing.CompositionExtensions
@@ -8,7 +8,9 @@ namespace Umbraco.Core.Composing.CompositionExtensions
    {
        public static Composition ComposeCoreMappingProfiles(this Composition composition)
        {
-            composition.Register<Profile, IdentityMapperProfile>();
+            composition.RegisterUnique<UmbracoMapper>();
+            composition.WithCollectionBuilder<MapDefinitionCollectionBuilder>()
+                .Add<IdentityMapDefinition>();
            return composition;
        }
    }
@@ -46,6 +46,7 @@ namespace Umbraco.Core.Composing.CompositionExtensions
            composition.RegisterUnique<IPartialViewRepository, PartialViewRepository>();
            composition.RegisterUnique<IScriptRepository, ScriptRepository>();
            composition.RegisterUnique<IStylesheetRepository, StylesheetRepository>();
+            composition.RegisterUnique<IContentTypeCommonRepository, ContentTypeCommonRepository>();

            return composition;
        }
@@ -98,7 +98,6 @@ namespace Umbraco.Core.Composing.CompositionExtensions
                : appPlugins.GetDirectories()
                    .SelectMany(x => x.GetDirectories("Lang"))
                    .SelectMany(x => x.GetFiles("*.xml", SearchOption.TopDirectoryOnly))
-                    .Where(x => Path.GetFileNameWithoutExtension(x.FullName).Length == 5)
                    .Select(x => new LocalizedTextServiceSupplementaryFileSource(x, false));

            //user defined langs that overwrite the default, these should not be used by plugin creators
@@ -106,7 +105,6 @@ namespace Umbraco.Core.Composing.CompositionExtensions
                ? Enumerable.Empty<LocalizedTextServiceSupplementaryFileSource>()
                : configLangFolder
                    .GetFiles("*.user.xml", SearchOption.TopDirectoryOnly)
-                    .Where(x => Path.GetFileNameWithoutExtension(x.FullName).Length == 10)
                    .Select(x => new LocalizedTextServiceSupplementaryFileSource(x, true));

            return new LocalizedTextServiceFileSources(
@@ -4,6 +4,7 @@ using Umbraco.Core.Configuration;
 using Umbraco.Core.Dictionary;
 using Umbraco.Core.IO;
 using Umbraco.Core.Logging;
+using Umbraco.Core.Mapping;
 using Umbraco.Core.Models.PublishedContent;
 using Umbraco.Core.PackageActions;
 using Umbraco.Core.Packaging;
@@ -103,6 +104,9 @@ namespace Umbraco.Core.Composing

        #region Getters

+        public static UmbracoMapper Mapper
+            => _factory.GetInstance<UmbracoMapper>();
+
        public static IShortStringHelper ShortStringHelper
            => _shortStringHelper ?? (_shortStringHelper = _factory?.TryGetInstance<IShortStringHelper>()
                                  ?? new DefaultShortStringHelper(new DefaultShortStringHelperConfig().WithDefault(Configs.Settings())));
@@ -0,0 +1,171 @@
+using System;
+using System.Collections.Generic;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Implements an un-ordered collection builder.
+    /// </summary>
+    /// <typeparam name="TBuilder">The type of the builder.</typeparam>
+    /// <typeparam name="TCollection">The type of the collection.</typeparam>
+    /// <typeparam name="TItem">The type of the items.</typeparam>
+    /// <remarks>
+    /// <para>A set collection builder is the most basic collection builder,
+    /// where items are not ordered.</para>
+    /// </remarks>
+    public abstract class SetCollectionBuilderBase<TBuilder, TCollection, TItem> : CollectionBuilderBase<TBuilder, TCollection, TItem>
+        where TBuilder : SetCollectionBuilderBase<TBuilder, TCollection, TItem>
+        where TCollection : class, IBuilderCollection<TItem>
+    {
+        protected abstract TBuilder This { get; }
+
+        /// <summary>
+        /// Clears all types in the collection.
+        /// </summary>
+        /// <returns>The builder.</returns>
+        public TBuilder Clear()
+        {
+            Configure(types => types.Clear());
+            return This;
+        }
+
+        /// <summary>
+        /// Adds a type to the collection.
+        /// </summary>
+        /// <typeparam name="T">The type to append.</typeparam>
+        /// <returns>The builder.</returns>
+        public TBuilder Add<T>()
+            where T : TItem
+        {
+            Configure(types =>
+            {
+                var type = typeof(T);
+                if (types.Contains(type)) types.Remove(type);
+                types.Add(type);
+            });
+            return This;
+        }
+
+        /// <summary>
+        /// Adds a type to the collection.
+        /// </summary>
+        /// <param name="type">The type to append.</param>
+        /// <returns>The builder.</returns>
+        public TBuilder Add(Type type)
+        {
+            Configure(types =>
+            {
+                EnsureType(type, "register");
+                if (types.Contains(type)) types.Remove(type);
+                types.Add(type);
+            });
+            return This;
+        }
+
+        /// <summary>
+        ///  Adds types to the collections.
+        /// </summary>
+        /// <param name="types">The types to append.</param>
+        /// <returns>The builder.</returns>
+        public TBuilder Add(IEnumerable<Type> types)
+        {
+            Configure(list =>
+            {
+                foreach (var type in types)
+                {
+                    // would be detected by CollectionBuilderBase when registering, anyways, but let's fail fast
+                    EnsureType(type, "register");
+                    if (list.Contains(type)) list.Remove(type);
+                    list.Add(type);
+                }
+            });
+            return This;
+        }
+
+        /// <summary>
+        /// Removes a type from the collection.
+        /// </summary>
+        /// <typeparam name="T">The type to remove.</typeparam>
+        /// <returns>The builder.</returns>
+        public TBuilder Remove<T>()
+            where T : TItem
+        {
+            Configure(types =>
+            {
+                var type = typeof(T);
+                if (types.Contains(type)) types.Remove(type);
+            });
+            return This;
+        }
+
+        /// <summary>
+        /// Removes a type from the collection.
+        /// </summary>
+        /// <param name="type">The type to remove.</param>
+        /// <returns>The builder.</returns>
+        public TBuilder Remove(Type type)
+        {
+            Configure(types =>
+            {
+                EnsureType(type, "remove");
+                if (types.Contains(type)) types.Remove(type);
+            });
+            return This;
+        }
+
+        /// <summary>
+        /// Replaces a type in the collection.
+        /// </summary>
+        /// <typeparam name="TReplaced">The type to replace.</typeparam>
+        /// <typeparam name="T">The type to insert.</typeparam>
+        /// <returns>The builder.</returns>
+        /// <remarks>Throws if the type to replace does not already belong to the collection.</remarks>
+        public TBuilder Replace<TReplaced, T>()
+            where TReplaced : TItem
+            where T : TItem
+        {
+            Configure(types =>
+            {
+                var typeReplaced = typeof(TReplaced);
+                var type = typeof(T);
+                if (typeReplaced == type) return;
+
+                var index = types.IndexOf(typeReplaced);
+                if (index < 0) throw new InvalidOperationException();
+
+                if (types.Contains(type)) types.Remove(type);
+                index = types.IndexOf(typeReplaced); // in case removing type changed index
+                types.Insert(index, type);
+                types.Remove(typeReplaced);
+            });
+            return This;
+        }
+
+        /// <summary>
+        /// Replaces a type in the collection.
+        /// </summary>
+        /// <param name="typeReplaced">The type to replace.</param>
+        /// <param name="type">The type to insert.</param>
+        /// <returns>The builder.</returns>
+        /// <remarks>Throws if the type to replace does not already belong to the collection.</remarks>
+        public TBuilder Replace(Type typeReplaced, Type type)
+        {
+            Configure(types =>
+            {
+                EnsureType(typeReplaced, "find");
+                EnsureType(type, "register");
+
+                if (typeReplaced == type) return;
+
+                var index = types.IndexOf(typeReplaced);
+                if (index < 0) throw new InvalidOperationException();
+
+                if (types.Contains(type)) types.Remove(type);
+                index = types.IndexOf(typeReplaced); // in case removing type changed index
+                types.Insert(index, type);
+                types.Remove(typeReplaced);
+            });
+            return This;
+        }
+    }
+}
@@ -6,30 +6,50 @@ namespace Umbraco.Core.Composing
    /// <summary>
    /// Provides a base class for collections of types.
    /// </summary>
-    public abstract class TypeCollectionBuilderBase<TCollection, TConstraint> : ICollectionBuilder<TCollection, Type>
+    public abstract class TypeCollectionBuilderBase<TBuilder, TCollection, TConstraint> : ICollectionBuilder<TCollection, Type>
+        where TBuilder : TypeCollectionBuilderBase<TBuilder, TCollection, TConstraint>
        where TCollection : class, IBuilderCollection<Type>
    {
        private readonly HashSet<Type> _types = new HashSet<Type>();

-        private Type Validate(Type type, string action)
+        protected abstract TBuilder This { get; }
+
+        private static Type Validate(Type type, string action)
        {
            if (!typeof(TConstraint).IsAssignableFrom(type))
                throw new InvalidOperationException($"Cannot {action} type {type.FullName} as it does not inherit from/implement {typeof(TConstraint).FullName}.");
            return type;
        }

-        public void Add(Type type) => _types.Add(Validate(type, "add"));
-
-        public void Add<T>() => Add(typeof(T));
-
-        public void Add(IEnumerable<Type> types)
+        public TBuilder Add(Type type)
        {
-            foreach (var type in types) Add(type);
+            _types.Add(Validate(type, "add"));
+            return This;
        }

-        public void Remove(Type type) => _types.Remove(Validate(type, "remove"));
+        public TBuilder Add<T>()
+        {
+            Add(typeof(T));
+            return This;
+        }

-        public void Remove<T>() => Remove(typeof(T));
+        public TBuilder Add(IEnumerable<Type> types)
+        {
+            foreach (var type in types) Add(type);
+            return This;
+        }
+
+        public TBuilder Remove(Type type)
+        {
+            _types.Remove(Validate(type, "remove"));
+            return This;
+        }
+
+        public TBuilder Remove<T>()
+        {
+            Remove(typeof(T));
+            return This;
+        }

        public TCollection CreateCollection(IFactory factory)
        {
@@ -203,6 +203,28 @@ namespace Umbraco.Core
            composition.RegisterUnique(_ => registrar);
        }

+        /// <summary>
+        /// Sets the database server messenger options.
+        /// </summary>
+        /// <param name="composition">The composition.</param>
+        /// <param name="factory">A function creating the options.</param>
+        /// <remarks>Use DatabaseServerRegistrarAndMessengerComposer.GetDefaultOptions to get the options that Umbraco would use by default.</remarks>
+        public static void SetDatabaseServerMessengerOptions(this Composition composition, Func<IFactory, DatabaseServerMessengerOptions> factory)
+        {
+            composition.RegisterUnique(factory);
+        }
+
+        /// <summary>
+        /// Sets the database server messenger options.
+        /// </summary>
+        /// <param name="composition">The composition.</param>
+        /// <param name="options">Options.</param>
+        /// <remarks>Use DatabaseServerRegistrarAndMessengerComposer.GetDefaultOptions to get the options that Umbraco would use by default.</remarks>
+        public static void SetDatabaseServerMessengerOptions(this Composition composition, DatabaseServerMessengerOptions options)
+        {
+            composition.RegisterUnique(_ => options);
+        }
+
        /// <summary>
        /// Sets the short string helper.
        /// </summary>
@@ -4,6 +4,7 @@ using System.Linq;
 using System.Net.Configuration;
 using System.Web;
 using System.Web.Configuration;
+using System.Web.Hosting;
 using System.Xml.Linq;
 using Umbraco.Core.IO;

@@ -17,16 +18,15 @@ namespace Umbraco.Core.Configuration
    /// </summary>
    public class GlobalSettings : IGlobalSettings
    {
+        private string _localTempPath;

-        #region Private static fields
-
-        
+        // TODO these should not be static
        private static string _reservedPaths;
        private static string _reservedUrls;
+
        //ensure the built on (non-changeable) reserved paths are there at all times
        internal const string StaticReservedPaths = "~/app_plugins/,~/install/,~/mini-profiler-resources/,"; //must end with a comma!
        internal const string StaticReservedUrls = "~/config/splashes/noNodes.aspx,~/.well-known,"; //must end with a comma!
-        #endregion

        /// <summary>
        /// Used in unit testing to reset all config items that were set with property setters (i.e. did not come from config)
@@ -131,7 +131,7 @@ namespace Umbraco.Core.Configuration
                    : "~/App_Data/umbraco.config";
            }
        }
-        
+
        /// <summary>
        /// Gets the path to umbraco's root directory (/umbraco by default).
        /// </summary>
@@ -163,7 +163,7 @@ namespace Umbraco.Core.Configuration
                SaveSetting(Constants.AppSettings.ConfigurationStatus, value);
            }
        }
-        
+
        /// <summary>
        /// Saves a setting into the configuration file.
        /// </summary>
@@ -206,7 +206,7 @@ namespace Umbraco.Core.Configuration
                ConfigurationManager.RefreshSection("appSettings");
            }
        }
-              
+
        /// <summary>
        /// Gets a value indicating whether umbraco is running in [debug mode].
        /// </summary>
@@ -250,7 +250,7 @@ namespace Umbraco.Core.Configuration
                }
            }
        }
-        
+
        /// <summary>
        /// Returns the number of days that should take place between version checks.
        /// </summary>
@@ -269,7 +269,7 @@ namespace Umbraco.Core.Configuration
                }
            }
        }
-        
+
        /// <inheritdoc />
        public LocalTempStorage LocalTempStorageLocation
        {
@@ -288,25 +288,43 @@ namespace Umbraco.Core.Configuration
        {
            get
            {
+                if (_localTempPath != null)
+                    return _localTempPath;
+
                switch (LocalTempStorageLocation)
                {
                    case LocalTempStorage.AspNetTemp:
-                        return System.IO.Path.Combine(HttpRuntime.CodegenDir, "UmbracoData");
+                        return _localTempPath = System.IO.Path.Combine(HttpRuntime.CodegenDir, "UmbracoData");
+
                    case LocalTempStorage.EnvironmentTemp:
-                        // include the appdomain hash is just a safety check, for example if a website is moved from worker A to worker B and then back
-                        // to worker A again, in theory the %temp%  folder should already be empty but we really want to make sure that its not
-                        // utilizing an old path - assuming we cannot have SHA1 collisions on AppDomainAppId
-                        var appDomainHash = HttpRuntime.AppDomainAppId.GenerateHash();
-                        return System.IO.Path.Combine(Environment.ExpandEnvironmentVariables("%temp%"), "UmbracoData", appDomainHash);
+
+                        // environment temp is unique, we need a folder per site
+
+                        // use a hash
+                        // combine site name and application id
+                        //  site name is a Guid on Cloud
+                        //  application id is eg /LM/W3SVC/123456/ROOT
+                        // the combination is unique on one server
+                        // and, if a site moves from worker A to B and then back to A...
+                        //  hopefully it gets a new Guid or new application id?
+
+                        var siteName = HostingEnvironment.SiteName;
+                        var applicationId = HostingEnvironment.ApplicationID; // ie HttpRuntime.AppDomainAppId
+
+                        var hashString = siteName + "::" + applicationId;
+                        var hash = hashString.GenerateHash();
+                        var siteTemp = System.IO.Path.Combine(Environment.ExpandEnvironmentVariables("%temp%"), "UmbracoData", hash);
+
+                        return _localTempPath = siteTemp;
+
                    //case LocalTempStorage.Default:
                    //case LocalTempStorage.Unknown:
                    default:
-                        return IOHelper.MapPath("~/App_Data/TEMP");
+                        return _localTempPath = IOHelper.MapPath("~/App_Data/TEMP");
                }
            }
        }

-
        /// <summary>
        /// Gets the default UI language.
        /// </summary>
@@ -93,7 +93,6 @@ namespace Umbraco.Core
            /// </summary>
            public const string DisableElectionForSingleServer = "Umbraco.Core.DisableElectionForSingleServer";

-            
            /// <summary>
            /// Debug specific web.config AppSetting keys for Umbraco
            /// </summary>
@@ -145,11 +145,11 @@

            public const string PartialViewMacros = "partialViewMacros";

-			public const string LogViewer = "logViewer";
+            public const string LogViewer = "logViewer";

            public static class Groups
            {
-				public const string Settings = "settingsGroup";
+                public const string Settings = "settingsGroup";

                public const string Templating = "templatingGroup";

@@ -92,10 +92,10 @@ namespace Umbraco.Core
                /// </summary>
                public const string Extension = "umbracoExtension";

-				/// <summary>
-				/// The default height/width of an image file if the size can't be determined from the metadata
-				/// </summary>
-				public const int DefaultSize = 200;
+                /// <summary>
+                /// The default height/width of an image file if the size can't be determined from the metadata
+                /// </summary>
+                public const int DefaultSize = 200;
            }

            /// <summary>
@@ -209,71 +209,71 @@ namespace Umbraco.Core
                public static Dictionary<string, PropertyType> GetStandardPropertyTypeStubs()
                {
                    return new Dictionary<string, PropertyType>
+                    {
                        {
+                            Comments,
+                            new PropertyType(PropertyEditors.Aliases.TextArea, ValueStorageType.Ntext, true, Comments)
                            {
-                                Comments,
-                                new PropertyType(PropertyEditors.Aliases.TextArea, ValueStorageType.Ntext, true, Comments)
-                                    {
-                                        Name = CommentsLabel
-                                    }
-                            },
-                            {
-                                FailedPasswordAttempts,
-                                new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Integer, true, FailedPasswordAttempts)
-                                    {
-                                        Name = FailedPasswordAttemptsLabel
-                                    }
-                            },
-                            {
-                                IsApproved,
-                                new PropertyType(PropertyEditors.Aliases.Boolean, ValueStorageType.Integer, true, IsApproved)
-                                    {
-                                        Name = IsApprovedLabel
-                                    }
-                            },
-                            {
-                                IsLockedOut,
-                                new PropertyType(PropertyEditors.Aliases.Boolean, ValueStorageType.Integer, true, IsLockedOut)
-                                    {
-                                        Name = IsLockedOutLabel
-                                    }
-                            },
-                            {
-                                LastLockoutDate,
-                                new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Date, true, LastLockoutDate)
-                                    {
-                                        Name = LastLockoutDateLabel
-                                    }
-                            },
-                            {
-                                LastLoginDate,
-                                new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Date, true, LastLoginDate)
-                                    {
-                                        Name = LastLoginDateLabel
-                                    }
-                            },
-                            {
-                                LastPasswordChangeDate,
-                                new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Date, true, LastPasswordChangeDate)
-                                    {
-                                        Name = LastPasswordChangeDateLabel
-                                    }
-                            },
-                            {
-                                PasswordAnswer,
-                                new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Nvarchar, true, PasswordAnswer)
-                                    {
-                                        Name = PasswordAnswerLabel
-                                    }
-                            },
-                            {
-                                PasswordQuestion,
-                                new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Nvarchar, true, PasswordQuestion)
-                                    {
-                                        Name = PasswordQuestionLabel
-                                    }
+                                Name = CommentsLabel
                            }
-                        };
+                        },
+                        {
+                            FailedPasswordAttempts,
+                            new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Integer, true, FailedPasswordAttempts)
+                            {
+                                Name = FailedPasswordAttemptsLabel
+                            }
+                        },
+                        {
+                            IsApproved,
+                            new PropertyType(PropertyEditors.Aliases.Boolean, ValueStorageType.Integer, true, IsApproved)
+                            {
+                                Name = IsApprovedLabel
+                            }
+                        },
+                        {
+                            IsLockedOut,
+                            new PropertyType(PropertyEditors.Aliases.Boolean, ValueStorageType.Integer, true, IsLockedOut)
+                            {
+                                Name = IsLockedOutLabel
+                            }
+                        },
+                        {
+                            LastLockoutDate,
+                            new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Date, true, LastLockoutDate)
+                            {
+                                Name = LastLockoutDateLabel
+                            }
+                        },
+                        {
+                            LastLoginDate,
+                            new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Date, true, LastLoginDate)
+                            {
+                                Name = LastLoginDateLabel
+                            }
+                        },
+                        {
+                            LastPasswordChangeDate,
+                            new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Date, true, LastPasswordChangeDate)
+                            {
+                                Name = LastPasswordChangeDateLabel
+                            }
+                        },
+                        {
+                            PasswordAnswer,
+                            new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Nvarchar, true, PasswordAnswer)
+                            {
+                                Name = PasswordAnswerLabel
+                            }
+                        },
+                        {
+                            PasswordQuestion,
+                            new PropertyType(PropertyEditors.Aliases.Label, ValueStorageType.Nvarchar, true, PasswordQuestion)
+                            {
+                                Name = PasswordQuestionLabel
+                            }
+                        }
+                    };
                }
            }

@@ -1,17 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Umbraco.Core
+namespace Umbraco.Core
 {
    public static partial class Constants
    {
        public static class Icons
        {
-
-
            /// <summary>
            /// System contenttype icon
            /// </summary>
@@ -42,12 +34,10 @@ namespace Umbraco.Core
            /// </summary>
            public const string MemberType = "icon-users";

-
            /// <summary>
            /// System member icon
            /// </summary>
            public const string Template = "icon-layout";
-
        }
    }
 }
@@ -1,7 +1,4 @@
-using System;
-using System.ComponentModel;
-
-namespace Umbraco.Core
+namespace Umbraco.Core
 {
    public static partial class Constants
    {
@@ -123,7 +123,6 @@ namespace Umbraco.Core
            public static readonly Guid Template = new Guid(Strings.Template);

            public static readonly Guid ContentItem = new Guid(Strings.ContentItem);
-
        }
    }
 }
@@ -3,7 +3,7 @@
    public static partial class Constants
    {
        /// <summary>
-        ///     Defines the constants used for the Umbraco package repository
+        /// Defines the constants used for the Umbraco package repository
        /// </summary>
        public static class PackageRepository
        {
@@ -34,7 +34,6 @@ namespace Umbraco.Core
                /// </summary>
                public const string ContentPicker = "Umbraco.ContentPicker";

-   
                /// <summary>
                /// DateTime.
                /// </summary>
@@ -15,13 +15,18 @@ namespace Umbraco.Core
            public const int SuperUserId = -1;

            /// <summary>
-            /// The id for the 'unknown' user
+            /// The id for the 'unknown' user.
            /// </summary>
            /// <remarks>
            /// This is a user row that exists in the DB only for referential integrity but the user is never returned from any of the services
            /// </remarks>
            public const int UnknownUserId = 0;

+            /// <summary>
+            /// The name of the 'unknown' user.
+            /// </summary>
+            public const string UnknownUserName = "SYTEM";
+
            public const string AdminGroupAlias = "admin";
            public const string SensitiveDataGroupAlias = "sensitiveData";
            public const string TranslatorGroupAlias = "translator";
@@ -1,7 +1,4 @@
-using System;
-using System.ComponentModel;
-
-namespace Umbraco.Core
+namespace Umbraco.Core
 {
    public static partial class Constants
    {
@@ -22,7 +19,6 @@ namespace Umbraco.Core
            public const string PreviewCookieName = "UMB_PREVIEW";

            public const string InstallerCookieName = "umb_installId";
-
        }
    }
 }
@@ -7,6 +7,7 @@ using System.Web;
 using System.Xml.Linq;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
+using NPoco.Expressions;
 using Umbraco.Core.Composing;
 using Umbraco.Core.IO;
 using Umbraco.Core.Models;
@@ -52,8 +53,8 @@ namespace Umbraco.Core
            return ContentStatus.Unpublished;
        }

-        
-        
+
+
        #endregion

        /// <summary>
@@ -134,9 +135,14 @@ namespace Umbraco.Core
        /// <summary>
        /// Sets the posted file value of a property.
        /// </summary>
-        /// <remarks>This really is for FileUpload fields only, and should be obsoleted. For anything else,
-        /// you need to store the file by yourself using Store and then figure out
-        /// how to deal with auto-fill properties (if any) and thumbnails (if any) by yourself.</remarks>
+        public static void SetValue(this IContentBase content, IContentTypeBaseServiceProvider contentTypeBaseServiceProvider, string propertyTypeAlias, string filename, HttpPostedFileBase postedFile, string culture = null, string segment = null)
+        {
+            content.SetValue(contentTypeBaseServiceProvider, propertyTypeAlias, postedFile.FileName, postedFile.InputStream, culture, segment);
+        }
+
+        /// <summary>
+        /// Sets the posted file value of a property.
+        /// </summary>
        public static void SetValue(this IContentBase content, IContentTypeBaseServiceProvider contentTypeBaseServiceProvider, string propertyTypeAlias, string filename, Stream filestream, string culture = null, string segment = null)
        {
            if (filename == null || filestream == null) return;
@@ -10,6 +10,18 @@ namespace Umbraco.Core
    ///</summary>
    public static class EnumerableExtensions
    {
+        internal static bool HasDuplicates<T>(this IEnumerable<T> items, bool includeNull)
+        {
+            var hs = new HashSet<T>();
+            foreach (var item in items)
+            {
+                if ((item != null || includeNull) && !hs.Add(item))
+                    return true;
+            }
+            return false;
+        }
+
+
        /// <summary>
        /// Wraps this object instance into an IEnumerable{T} consisting of a single item.
        /// </summary>
@@ -100,7 +112,7 @@ namespace Umbraco.Core
            }
        }

-        
+
        /// <summary>
        /// Returns true if all items in the other collection exist in this collection
        /// </summary>
@@ -8,12 +8,9 @@ namespace Umbraco.Core.IO.MediaPathSchemes
    /// </summary>
    /// <remarks>
    /// <para>Path is "{combinedGuid}/{filename}" where combinedGuid is a combination of itemGuid and propertyGuid.</para>
-    /// <para>This scheme is dangerous, as it does not prevent potential collisions.</para>
    /// </remarks>
    public class CombinedGuidsMediaPathScheme : IMediaPathScheme
    {
-        private const int DirectoryLength = 8;
-
        /// <inheritdoc />
        public string GetFilePath(IMediaFileSystem fileSystem, Guid itemGuid, Guid propertyGuid, string filename, string previous = null)
        {
@@ -21,7 +18,7 @@ namespace Umbraco.Core.IO.MediaPathSchemes
            // for a single content cannot store two different files with the same name

            var combinedGuid = GuidUtils.Combine(itemGuid, propertyGuid);
-            var directory = GuidUtils.ToBase32String(combinedGuid, DirectoryLength); // see also HexEncoder, we may want to fragment path eg 12/e4/f3...
+            var directory = HexEncoder.Encode(combinedGuid.ToByteArray()/*'/', 2, 4*/); // could use ext to fragment path eg 12/e4/f2/...
            return Path.Combine(directory, filename).Replace('\\', '/');
        }

@@ -7,7 +7,7 @@ namespace Umbraco.Core.IO.MediaPathSchemes
    /// Implements a unique directory media path scheme.
    /// </summary>
    /// <remarks>
-    /// <para>This scheme provides short paths, yet handle potential collisions.</para>
+    /// <para>This scheme provides deterministic short paths, with potential collisions.</para>
    /// </remarks>
    public class UniqueMediaPathScheme : IMediaPathScheme
    {
@@ -16,23 +16,22 @@ namespace Umbraco.Core.IO.MediaPathSchemes
        /// <inheritdoc />
        public string GetFilePath(IMediaFileSystem fileSystem, Guid itemGuid, Guid propertyGuid, string filename, string previous = null)
        {
-            string directory;
-
-            // no point "combining" guids if all we want is some random guid - just get a new one
-            // and then, because we don't want collisions, ensure that the directory does not already exist
-            // (should be quite rare, but eh...)
-
-            do
-            {
-                var combinedGuid = Guid.NewGuid();
-                directory = GuidUtils.ToBase32String(combinedGuid, DirectoryLength); // see also HexEncoder, we may want to fragment path eg 12/e4/f3...
-
-            } while (fileSystem.DirectoryExists(directory));
+            var combinedGuid = GuidUtils.Combine(itemGuid, propertyGuid);
+            var directory = GuidUtils.ToBase32String(combinedGuid, DirectoryLength);

            return Path.Combine(directory, filename).Replace('\\', '/');
        }

        /// <inheritdoc />
-        public string GetDeleteDirectory(IMediaFileSystem fileSystem, string filepath) => Path.GetDirectoryName(filepath);
+        /// <remarks>
+        /// <para>Returning null so that <see cref="MediaFileSystem.DeleteMediaFiles"/> does *not*
+        /// delete any directory. This is because the above shortening of the Guid to 8 chars
+        /// means we're increasing the risk of collision, and we don't want to delete files
+        /// belonging to other media items.</para>
+        /// <para>And, at the moment, we cannot delete directory "only if it is empty" because of
+        /// race conditions. We'd need to implement locks in <see cref="MediaFileSystem"/> for
+        /// this.</para>
+        /// </remarks>
+        public string GetDeleteDirectory(IMediaFileSystem fileSystem, string filepath) => null;
    }
-}
+}
@@ -1,7 +1,11 @@
 using System;
+using System.Text;
 using System.Web;
 using Serilog;
+using Serilog.Configuration;
+using Serilog.Core;
 using Serilog.Events;
+using Serilog.Formatting;
 using Serilog.Formatting.Compact;
 using Umbraco.Core.Logging.Serilog.Enrichers;

@@ -9,6 +13,7 @@ namespace Umbraco.Core.Logging.Serilog
 {
    public static class LoggerConfigExtensions
    {
+        private const string AppDomainId = "AppDomainId";
        /// <summary>
        /// This configures Serilog with some defaults
        /// Such as adding ProcessID, Thread, AppDomain etc
@@ -28,14 +33,14 @@ namespace Umbraco.Core.Logging.Serilog
                .Enrich.WithProcessId()
                .Enrich.WithProcessName()
                .Enrich.WithThreadId()
-                .Enrich.WithProperty("AppDomainId", AppDomain.CurrentDomain.Id)
+                .Enrich.WithProperty(AppDomainId, AppDomain.CurrentDomain.Id)
                .Enrich.WithProperty("AppDomainAppId", HttpRuntime.AppDomainAppId.ReplaceNonAlphanumericChars(string.Empty))
                .Enrich.WithProperty("MachineName", Environment.MachineName)
                .Enrich.With<Log4NetLevelMapperEnricher>()
                .Enrich.With<HttpSessionIdEnricher>()
                .Enrich.With<HttpRequestNumberEnricher>()
                .Enrich.With<HttpRequestIdEnricher>();
-            
+
            return logConfig;
        }

@@ -50,15 +55,51 @@ namespace Umbraco.Core.Logging.Serilog
            //Main .txt logfile - in similar format to older Log4Net output
            //Ends with ..txt as Date is inserted before file extension substring
            logConfig.WriteTo.File($@"{AppDomain.CurrentDomain.BaseDirectory}\App_Data\Logs\UmbracoTraceLog.{Environment.MachineName}..txt",
-                    shared: true,
-                    rollingInterval: RollingInterval.Day,
-                    restrictedToMinimumLevel: minimumLevel,
-                    retainedFileCountLimit: null, //Setting to null means we keep all files - default is 31 days
-                    outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss,fff} [P{ProcessId}/D{AppDomainId}/T{ThreadId}] {Log4NetLevel}  {SourceContext} - {Message:lj}{NewLine}{Exception}");
+                shared: true,
+                rollingInterval: RollingInterval.Day,
+                restrictedToMinimumLevel: minimumLevel,
+                retainedFileCountLimit: null, //Setting to null means we keep all files - default is 31 days
+                outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss,fff} [P{ProcessId}/D{AppDomainId}/T{ThreadId}] {Log4NetLevel}  {SourceContext} - {Message:lj}{NewLine}{Exception}");

            return logConfig;
        }

+
+        /// <remarks>
+        ///    Used in config - If renamed or moved to other assembly the config file also has be updated.
+        /// </remarks>
+        public static LoggerConfiguration File(this LoggerSinkConfiguration configuration, ITextFormatter formatter,
+            string path,
+            LogEventLevel restrictedToMinimumLevel = LogEventLevel.Verbose,
+            LoggingLevelSwitch levelSwitch = null,
+            long? fileSizeLimitBytes = 1073741824,
+            TimeSpan? flushToDiskInterval = null,
+            RollingInterval rollingInterval = RollingInterval.Infinite,
+            bool rollOnFileSizeLimit = false,
+            int? retainedFileCountLimit = 31,
+            Encoding encoding = null
+   )
+        {
+            return configuration.Async(
+                asyncConfiguration => asyncConfiguration.Map(AppDomainId, (_,mapConfiguration) =>
+                        mapConfiguration.File(
+                            formatter,
+                            path,
+                            restrictedToMinimumLevel,
+                            fileSizeLimitBytes,
+                            levelSwitch,
+                            buffered:true,
+                            shared:false,
+                            flushToDiskInterval,
+                            rollingInterval,
+                            rollOnFileSizeLimit,
+                            retainedFileCountLimit,
+                            encoding),
+                    sinkMapCountLimit:0)
+                );
+        }
+
+
        /// <summary>
        /// Outputs a CLEF format JSON log at /App_Data/Logs/
        /// </summary>
@@ -13,7 +13,7 @@ namespace Umbraco.Core.Logging.Serilog
    ///<summary>
    /// Implements <see cref="ILogger"/> on top of Serilog.
    ///</summary>
-    public class SerilogLogger : ILogger
+    public class SerilogLogger : ILogger, IDisposable
    {
        /// <summary>
        /// Initialize a new instance of the <see cref="SerilogLogger"/> class with a configuration file.
@@ -271,5 +271,10 @@ namespace Umbraco.Core.Logging.Serilog
        {
            LoggerFor(reporting).Verbose(messageTemplate, propertyValues);
        }
+
+        public void Dispose()
+        {
+            Log.CloseAndFlush();
+        }
    }
 }
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Newtonsoft.Json;
 using Serilog.Events;
 using Serilog.Formatting.Compact.Reader;

@@ -10,13 +11,15 @@ namespace Umbraco.Core.Logging.Viewer
    internal class JsonLogViewer : LogViewerSourceBase
    {
        private readonly string _logsPath;
+        private readonly ILogger _logger;

-        public JsonLogViewer(string logsPath = "", string searchPath = "") : base(searchPath)
+        public JsonLogViewer(ILogger logger, string logsPath = "", string searchPath = "") : base(searchPath)
        {
            if (string.IsNullOrEmpty(logsPath))
                logsPath = $@"{AppDomain.CurrentDomain.BaseDirectory}\App_Data\Logs\";

            _logsPath = logsPath;
+            _logger = logger;
        }

        private const int FileSizeCap = 100;
@@ -36,7 +39,7 @@ namespace Umbraco.Core.Logging.Viewer
            for (var day = startDate.Date; day.Date <= endDate.Date; day = day.AddDays(1))
            {
                //Filename ending to search for (As could be multiple)
-                var filesToFind = $"*{day:yyyyMMdd}.json";
+                var filesToFind = GetSearchPattern(day);

                var filesForCurrentDay = Directory.GetFiles(logDirectory, filesToFind);

@@ -49,6 +52,11 @@ namespace Umbraco.Core.Logging.Viewer
            return logSizeAsMegabytes <= FileSizeCap;
        }

+        private string GetSearchPattern(DateTime day)
+        {
+            return $"*{day:yyyyMMdd}*.json";
+        }
+
        protected override IReadOnlyList<LogEvent> GetLogs(DateTimeOffset startDate, DateTimeOffset endDate, ILogFilter filter, int skip, int take)
        {
            var logs = new List<LogEvent>();
@@ -63,7 +71,7 @@ namespace Umbraco.Core.Logging.Viewer
            for (var day = startDate.Date; day.Date <= endDate.Date; day = day.AddDays(1))
            {
                //Filename ending to search for (As could be multiple)
-                var filesToFind = $"*{day:yyyyMMdd}.json";
+                var filesToFind = GetSearchPattern(day);

                var filesForCurrentDay = Directory.GetFiles(logDirectory, filesToFind);

@@ -77,8 +85,14 @@ namespace Umbraco.Core.Logging.Viewer
                        using (var stream = new StreamReader(fs))
                        {
                            var reader = new LogEventReader(stream);
-                            while (reader.TryRead(out var evt))
+                            while (TryRead(reader, out var evt))
                            {
+                                //We may get a null if log line is malformed
+                                if (evt == null)
+                                {
+                                    continue;
+                                }
+
                                if (count > skip + take)
                                {
                                    break;
@@ -105,5 +119,21 @@ namespace Umbraco.Core.Logging.Viewer
            return logs;
        }

+        private bool TryRead(LogEventReader reader, out LogEvent evt)
+        {
+            try
+            {
+                return reader.TryRead(out evt);
+            }
+            catch (JsonReaderException ex)
+            {
+                // As we are reading/streaming one line at a time in the JSON file
+                // Thus we can not report the line number, as it will always be 1
+                _logger.Error<JsonLogViewer>(ex, "Unable to parse a line in the JSON log file");
+
+                evt = null;
+                return true;
+            }
+        }
    }
 }
@@ -9,7 +9,7 @@ namespace Umbraco.Core.Logging.Viewer
    {
        public void Compose(Composition composition)
        {
-            composition.SetLogViewer(_ => new JsonLogViewer());
+            composition.SetLogViewer(_ => new JsonLogViewer(composition.Logger));
        }
    }
 }
@@ -0,0 +1,13 @@
+namespace Umbraco.Core.Mapping
+{
+    /// <summary>
+    /// Defines maps for <see cref="UmbracoMapper"/>.
+    /// </summary>
+    public interface IMapDefinition
+    {
+        /// <summary>
+        /// Defines maps.
+        /// </summary>
+        void DefineMaps(UmbracoMapper mapper);
+    }
+}
@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+using Umbraco.Core.Composing;
+
+namespace Umbraco.Core.Mapping
+{
+    public class MapDefinitionCollection : BuilderCollectionBase<IMapDefinition>
+    {
+        public MapDefinitionCollection(IEnumerable<IMapDefinition> items)
+            : base(items)
+        { }
+    }
+}
@@ -0,0 +1,11 @@
+using Umbraco.Core.Composing;
+
+namespace Umbraco.Core.Mapping
+{
+    public class MapDefinitionCollectionBuilder : SetCollectionBuilderBase<MapDefinitionCollectionBuilder, MapDefinitionCollection, IMapDefinition>
+    {
+        protected override MapDefinitionCollectionBuilder This => this;
+
+        protected override Lifetime CollectionLifetime => Lifetime.Transient;
+    }
+}
@@ -0,0 +1,130 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Umbraco.Core.Mapping
+{
+    /// <summary>
+    /// Represents a mapper context.
+    /// </summary>
+    public class MapperContext
+    {
+        private readonly UmbracoMapper _mapper;
+        private IDictionary<string, object> _items;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MapperContext"/> class.
+        /// </summary>
+        public MapperContext(UmbracoMapper mapper)
+        {
+            _mapper = mapper;
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the context has items.
+        /// </summary>
+        public bool HasItems => _items != null;
+
+        /// <summary>
+        /// Gets the context items.
+        /// </summary>
+        public IDictionary<string, object> Items => _items ?? (_items = new Dictionary<string, object>());
+
+        #region Map
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TTarget>(object source)
+            => _mapper.Map<TTarget>(source, this);
+
+        // let's say this is a bad (dangerous) idea, and leave it out for now
+        /*
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="f">A mapper context preparation method.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TTarget>(object source, Action<MapperContext> f)
+        {
+            f(this);
+            return _mapper.Map<TTarget>(source, this);
+        }
+        */
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source)
+            => _mapper.Map<TSource, TTarget>(source, this);
+
+        // let's say this is a bad (dangerous) idea, and leave it out for now
+        /*
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="f">A mapper context preparation method.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, Action<MapperContext> f)
+        {
+            f(this);
+            return _mapper.Map<TSource, TTarget>(source, this);
+        }
+        */
+
+        /// <summary>
+        /// Maps a source object to an existing target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="target">The target object.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, TTarget target)
+            => _mapper.Map(source, target, this);
+
+        // let's say this is a bad (dangerous) idea, and leave it out for now
+        /*
+        /// <summary>
+        /// Maps a source object to an existing target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="target">The target object.</param>
+        /// <param name="f">A mapper context preparation method.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, TTarget target, Action<MapperContext> f)
+        {
+            f(this);
+            return _mapper.Map(source, target, this);
+        }
+        */
+
+        /// <summary>
+        /// Maps an enumerable of source objects to a new list of target objects.
+        /// </summary>
+        /// <typeparam name="TSourceElement">The type of the source objects.</typeparam>
+        /// <typeparam name="TTargetElement">The type of the target objects.</typeparam>
+        /// <param name="source">The source objects.</param>
+        /// <returns>A list containing the target objects.</returns>
+        public List<TTargetElement> MapEnumerable<TSourceElement, TTargetElement>(IEnumerable<TSourceElement> source)
+        {
+            return source.Select(Map<TSourceElement, TTargetElement>).ToList();
+        }
+
+        #endregion
+    }
+}
@@ -0,0 +1,430 @@
+using System;
+using System.Collections;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Umbraco.Core.Mapping
+{
+    // notes:
+    // AutoMapper maps null to empty arrays, lists, etc
+
+    // TODO:
+    // when mapping from TSource, and no map is found, consider the actual source.GetType()?
+    // when mapping to TTarget, and no map is found, consider the actual target.GetType()?
+    // not sure we want to add magic to this simple mapper class, though
+
+    /// <summary>
+    /// Umbraco Mapper.
+    /// </summary>
+    /// <remarks>
+    /// <para>When a map is defined from TSource to TTarget, the mapper automatically knows how to map
+    /// from IEnumerable{TSource} to IEnumerable{TTarget} (using a List{TTarget}) and to TTarget[].</para>
+    /// <para>When a map is defined from TSource to TTarget, the mapper automatically uses that map
+    /// for any source type that inherits from, or implements, TSource.</para>
+    /// <para>When a map is defined from TSource to TTarget, the mapper can map to TTarget exclusively
+    /// and cannot re-use that map for types that would inherit from, or implement, TTarget.</para>
+    /// <para>When using the Map{TSource, TTarget}(TSource source, ...) overloads, TSource is explicit. When
+    /// using the Map{TTarget}(object source, ...) TSource is defined as source.GetType().</para>
+    /// <para>In both cases, TTarget is explicit and not typeof(target).</para>
+    /// </remarks>
+    public class UmbracoMapper
+    {
+        // note
+        //
+        // the outer dictionary *can* be modified, see GetCtor and GetMap, hence have to be ConcurrentDictionary
+        // the inner dictionaries are never modified and therefore can be simple Dictionary
+
+        private readonly ConcurrentDictionary<Type, Dictionary<Type, Func<object, MapperContext, object>>> _ctors
+            = new ConcurrentDictionary<Type, Dictionary<Type, Func<object, MapperContext, object>>>();
+
+        private readonly ConcurrentDictionary<Type, Dictionary<Type, Action<object, object, MapperContext>>> _maps
+            = new ConcurrentDictionary<Type, Dictionary<Type, Action<object, object, MapperContext>>>();
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="UmbracoMapper"/> class.
+        /// </summary>
+        /// <param name="profiles"></param>
+        public UmbracoMapper(MapDefinitionCollection profiles)
+        {
+            foreach (var profile in profiles)
+                profile.DefineMaps(this);
+        }
+
+        #region Define
+
+        private static TTarget ThrowCtor<TSource, TTarget>(TSource source, MapperContext context)
+            => throw new InvalidOperationException($"Don't know how to create {typeof(TTarget).FullName} instances.");
+
+        private static void Identity<TSource, TTarget>(TSource source, TTarget target, MapperContext context)
+        { }
+
+        /// <summary>
+        /// Defines a mapping.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        public void Define<TSource, TTarget>()
+            => Define<TSource, TTarget>(ThrowCtor<TSource, TTarget>, Identity);
+
+        /// <summary>
+        /// Defines a mapping.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="map">A mapping method.</param>
+        public void Define<TSource, TTarget>(Action<TSource, TTarget, MapperContext> map)
+            => Define(ThrowCtor<TSource, TTarget>, map);
+
+        /// <summary>
+        /// Defines a mapping.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="ctor">A constructor method.</param>
+        public void Define<TSource, TTarget>(Func<TSource, MapperContext, TTarget> ctor)
+            => Define(ctor, Identity);
+
+        /// <summary>
+        /// Defines a mapping.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="ctor">A constructor method.</param>
+        /// <param name="map">A mapping method.</param>
+        public void Define<TSource, TTarget>(Func<TSource, MapperContext, TTarget> ctor, Action<TSource, TTarget, MapperContext> map)
+        {
+            var sourceType = typeof(TSource);
+            var targetType = typeof(TTarget);
+
+            var sourceCtors = DefineCtors(sourceType);
+            if (ctor != null)
+                sourceCtors[targetType] = (source, context) => ctor((TSource)source, context);
+
+            var sourceMaps = DefineMaps(sourceType);
+            sourceMaps[targetType] = (source, target, context) => map((TSource)source, (TTarget)target, context);
+        }
+
+        private Dictionary<Type, Func<object, MapperContext, object>> DefineCtors(Type sourceType)
+        {
+            return _ctors.GetOrAdd(sourceType, _ => new Dictionary<Type, Func<object, MapperContext, object>>());
+        }
+
+        private Dictionary<Type, Action<object, object, MapperContext>> DefineMaps(Type sourceType)
+        {
+            return _maps.GetOrAdd(sourceType, _ => new Dictionary<Type, Action<object, object, MapperContext>>());
+        }
+
+        #endregion
+
+        #region Map
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TTarget>(object source)
+            => Map<TTarget>(source, new MapperContext(this));
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="f">A mapper context preparation method.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TTarget>(object source, Action<MapperContext> f)
+        {
+            var context = new MapperContext(this);
+            f(context);
+            return Map<TTarget>(source, context);
+        }
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="context">A mapper context.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TTarget>(object source, MapperContext context)
+            => Map<TTarget>(source, source?.GetType(), context);
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source)
+            => Map<TSource, TTarget>(source, new MapperContext(this));
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="f">A mapper context preparation method.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, Action<MapperContext> f)
+        {
+            var context = new MapperContext(this);
+            f(context);
+            return Map<TSource, TTarget>(source, context);
+        }
+
+        /// <summary>
+        /// Maps a source object to a new target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="context">A mapper context.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, MapperContext context)
+            => Map<TTarget>(source, typeof(TSource), context);
+
+        private TTarget Map<TTarget>(object source, Type sourceType, MapperContext context)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+
+            var targetType = typeof(TTarget);
+
+            var ctor = GetCtor(sourceType, targetType);
+            var map = GetMap(sourceType, targetType);
+
+            // if there is a direct constructor, map
+            if (ctor != null && map != null)
+            {
+                var target = ctor(source, context);
+                map(source, target, context);
+                return (TTarget)target;
+            }
+
+            // otherwise, see if we can deal with enumerable
+
+            var ienumerableOfT = typeof(IEnumerable<>);
+
+            bool IsIEnumerableOfT(Type type) =>
+                type.IsGenericType &&
+                type.GenericTypeArguments.Length == 1 &&
+                type.GetGenericTypeDefinition() == ienumerableOfT;
+
+            // try to get source as an IEnumerable<T>
+            var sourceIEnumerable = IsIEnumerableOfT(sourceType) ? sourceType : sourceType.GetInterfaces().FirstOrDefault(IsIEnumerableOfT);
+
+            // if source is an IEnumerable<T> and target is T[] or IEnumerable<T>, we can create a map
+            if (sourceIEnumerable != null && IsEnumerableOrArrayOfType(targetType))
+            {
+                var sourceGenericArg = sourceIEnumerable.GenericTypeArguments[0];
+                var targetGenericArg = GetEnumerableOrArrayTypeArgument(targetType);
+
+                ctor = GetCtor(sourceGenericArg, targetGenericArg);
+                map = GetMap(sourceGenericArg, targetGenericArg);
+
+                // if there is a constructor for the underlying type, create & invoke the map
+                if (ctor != null && map != null)
+                {
+                    // register (for next time) and do it now (for this time)
+                    object NCtor(object s, MapperContext c) => MapEnumerableInternal<TTarget>((IEnumerable) s, targetGenericArg, ctor, map, c);
+                    DefineCtors(sourceType)[targetType] = NCtor;
+                    DefineMaps(sourceType)[targetType] = Identity;
+                    return (TTarget) NCtor(source, context);
+                }
+
+                throw new InvalidOperationException($"Don't know how to map {sourceGenericArg.FullName} to {targetGenericArg.FullName}, so don't know how to map {sourceType.FullName} to {targetType.FullName}.");
+            }
+
+            throw new InvalidOperationException($"Don't know how to map {sourceType.FullName} to {targetType.FullName}.");
+        }
+
+        private TTarget MapEnumerableInternal<TTarget>(IEnumerable source, Type targetGenericArg, Func<object, MapperContext, object> ctor, Action<object, object, MapperContext> map, MapperContext context)
+        {
+            var targetList = (IList)Activator.CreateInstance(typeof(List<>).MakeGenericType(targetGenericArg));
+
+            foreach (var sourceItem in source)
+            {
+                var targetItem = ctor(sourceItem, context);
+                map(sourceItem, targetItem, context);
+                targetList.Add(targetItem);
+            }
+
+            object target = targetList;
+
+            if (typeof(TTarget).IsArray)
+            {
+                var elementType = typeof(TTarget).GetElementType();
+                if (elementType == null) throw new Exception("panic");
+                var targetArray = Array.CreateInstance(elementType, targetList.Count);
+                targetList.CopyTo(targetArray, 0);
+                target = targetArray;
+            }
+
+            return (TTarget) target;
+        }
+
+        /// <summary>
+        /// Maps a source object to an existing target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="target">The target object.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, TTarget target)
+            => Map(source, target, new MapperContext(this));
+
+        /// <summary>
+        /// Maps a source object to an existing target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="target">The target object.</param>
+        /// <param name="f">A mapper context preparation method.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, TTarget target, Action<MapperContext> f)
+        {
+            var context = new MapperContext(this);
+            f(context);
+            return Map(source, target, context);
+        }
+
+        /// <summary>
+        /// Maps a source object to an existing target object.
+        /// </summary>
+        /// <typeparam name="TSource">The source type.</typeparam>
+        /// <typeparam name="TTarget">The target type.</typeparam>
+        /// <param name="source">The source object.</param>
+        /// <param name="target">The target object.</param>
+        /// <param name="context">A mapper context.</param>
+        /// <returns>The target object.</returns>
+        public TTarget Map<TSource, TTarget>(TSource source, TTarget target, MapperContext context)
+        {
+            var sourceType = typeof(TSource);
+            var targetType = typeof(TTarget);
+
+            var map = GetMap(sourceType, targetType);
+
+            // if there is a direct map, map
+            if (map != null)
+            {
+                map(source, target, context);
+                return target;
+            }
+
+            // we cannot really map to an existing enumerable - give up
+
+            throw new InvalidOperationException($"Don't know how to map {typeof(TSource).FullName} to {typeof(TTarget).FullName}.");
+        }
+
+        private Func<object, MapperContext, object> GetCtor(Type sourceType, Type targetType)
+        {
+            if (_ctors.TryGetValue(sourceType, out var sourceCtor) && sourceCtor.TryGetValue(targetType, out var ctor))
+                return ctor;
+
+            // we *may* run this more than once but it does not matter
+
+            ctor = null;
+            foreach (var (stype, sctors) in _ctors)
+            {
+                if (!stype.IsAssignableFrom(sourceType)) continue;
+                if (!sctors.TryGetValue(targetType, out ctor)) continue;
+
+                sourceCtor = sctors;
+                break;
+            }
+
+            if (ctor == null) return null;
+
+            _ctors[sourceType] = sourceCtor;
+            return ctor;
+        }
+
+        private Action<object, object, MapperContext> GetMap(Type sourceType, Type targetType)
+        {
+            if (_maps.TryGetValue(sourceType, out var sourceMap) && sourceMap.TryGetValue(targetType, out var map))
+                return map;
+
+            // we *may* run this more than once but it does not matter
+
+            map = null;
+            foreach (var (stype, smap) in _maps)
+            {
+                if (!stype.IsAssignableFrom(sourceType)) continue;
+
+                // TODO: consider looking for assignable types for target too?
+                if (!smap.TryGetValue(targetType, out map)) continue;
+
+                sourceMap = smap;
+                break;
+            }
+
+            if (map == null) return null;
+
+            _maps[sourceType] = sourceMap;
+            return map;
+        }
+
+        private static bool IsEnumerableOrArrayOfType(Type type)
+        {
+            if (type.IsArray && type.GetArrayRank() == 1) return true;
+            if (type.IsGenericType && type.GenericTypeArguments.Length == 1) return true;
+            return false;
+        }
+
+        private static Type GetEnumerableOrArrayTypeArgument(Type type)
+        {
+            if (type.IsArray) return type.GetElementType();
+            if (type.IsGenericType) return type.GenericTypeArguments[0];
+            throw new Exception("panic");
+        }
+
+        /// <summary>
+        /// Maps an enumerable of source objects to a new list of target objects.
+        /// </summary>
+        /// <typeparam name="TSourceElement">The type of the source objects.</typeparam>
+        /// <typeparam name="TTargetElement">The type of the target objects.</typeparam>
+        /// <param name="source">The source objects.</param>
+        /// <returns>A list containing the target objects.</returns>
+        public List<TTargetElement> MapEnumerable<TSourceElement, TTargetElement>(IEnumerable<TSourceElement> source)
+        {
+            return source.Select(Map<TSourceElement, TTargetElement>).ToList();
+        }
+
+        /// <summary>
+        /// Maps an enumerable of source objects to a new list of target objects.
+        /// </summary>
+        /// <typeparam name="TSourceElement">The type of the source objects.</typeparam>
+        /// <typeparam name="TTargetElement">The type of the target objects.</typeparam>
+        /// <param name="source">The source objects.</param>
+        /// <param name="f">A mapper context preparation method.</param>
+        /// <returns>A list containing the target objects.</returns>
+        public List<TTargetElement> MapEnumerable<TSourceElement, TTargetElement>(IEnumerable<TSourceElement> source, Action<MapperContext> f)
+        {
+            var context = new MapperContext(this);
+            f(context);
+            return source.Select(x => Map<TSourceElement, TTargetElement>(x, context)).ToList();
+        }
+
+        /// <summary>
+        /// Maps an enumerable of source objects to a new list of target objects.
+        /// </summary>
+        /// <typeparam name="TSourceElement">The type of the source objects.</typeparam>
+        /// <typeparam name="TTargetElement">The type of the target objects.</typeparam>
+        /// <param name="source">The source objects.</param>
+        /// <param name="context">A mapper context.</param>
+        /// <returns>A list containing the target objects.</returns>
+        public List<TTargetElement> MapEnumerable<TSourceElement, TTargetElement>(IEnumerable<TSourceElement> source, MapperContext context)
+        {
+            return source.Select(x => Map<TSourceElement, TTargetElement>(x, context)).ToList();
+        }
+
+        #endregion
+    }
+}
@@ -83,17 +83,25 @@ namespace Umbraco.Core.Migrations.Expressions.Create
        }

        /// <inheritdoc />
-        public ICreateConstraintOnTableBuilder PrimaryKey()
+        public ICreateConstraintOnTableBuilder PrimaryKey() => PrimaryKey(true);
+
+        /// <inheritdoc />
+        public ICreateConstraintOnTableBuilder PrimaryKey(bool clustered)
        {
            var expression = new CreateConstraintExpression(_context, ConstraintType.PrimaryKey);
+            expression.Constraint.IsPrimaryKeyClustered = clustered;
            return new CreateConstraintBuilder(expression);
        }

        /// <inheritdoc />
-        public ICreateConstraintOnTableBuilder PrimaryKey(string primaryKeyName)
+        public ICreateConstraintOnTableBuilder PrimaryKey(string primaryKeyName) => PrimaryKey(primaryKeyName, true);
+
+        /// <inheritdoc />
+        public ICreateConstraintOnTableBuilder PrimaryKey(string primaryKeyName, bool clustered)
        {
            var expression = new CreateConstraintExpression(_context, ConstraintType.PrimaryKey);
            expression.Constraint.ConstraintName = primaryKeyName;
+            expression.Constraint.IsPrimaryKeyClustered = clustered;
            return new CreateConstraintBuilder(expression);
        }

@@ -19,7 +19,7 @@ namespace Umbraco.Core.Migrations.Expressions.Create.Expressions
            var constraintType = (Constraint.IsPrimaryKeyConstraint) ? "PRIMARY KEY" : "UNIQUE";

            if (Constraint.IsPrimaryKeyConstraint && SqlSyntax.SupportsClustered())
-                constraintType += " CLUSTERED";
+                constraintType += Constraint.IsPrimaryKeyClustered ? " CLUSTERED" : " NONCLUSTERED";

            if (Constraint.IsNonUniqueConstraint)
                constraintType = string.Empty;
@@ -68,6 +68,16 @@ namespace Umbraco.Core.Migrations.Expressions.Create
        /// </summary>
        ICreateConstraintOnTableBuilder PrimaryKey(string primaryKeyName);

+        /// <summary>
+        /// Builds a Create Primary Key expression.
+        /// </summary>
+        ICreateConstraintOnTableBuilder PrimaryKey(bool clustered);
+
+        /// <summary>
+        /// Builds a Create Primary Key expression.
+        /// </summary>
+        ICreateConstraintOnTableBuilder PrimaryKey(string primaryKeyName, bool clustered);
+
        /// <summary>
        /// Builds a Create Unique Constraint expression.
        /// </summary>
@@ -25,11 +25,25 @@ namespace Umbraco.Core.Migrations.Expressions.Create.KeysAndIndexes
            var syntax = _context.SqlContext.SqlSyntax;
            var tableDefinition = DefinitionFactory.GetTableDefinition(TypeOfDto, syntax);

+            // note: of course we are creating the keys and indexes as per the DTO, so
+            // changing the DTO may break old migrations - or, better, these migrations
+            // should capture a copy of the DTO class that will not change
+
            ExecuteSql(syntax.FormatPrimaryKey(tableDefinition));
            foreach (var sql in syntax.Format(tableDefinition.Indexes))
                ExecuteSql(sql);
            foreach (var sql in syntax.Format(tableDefinition.ForeignKeys))
                ExecuteSql(sql);
+
+            // note: we do *not* create the DF_ default constraints
+            /*
+            foreach (var column in tableDefinition.Columns)
+            {
+                var sql = syntax.FormatDefaultConstraint(column);
+                if (!sql.IsNullOrWhiteSpace())
+                    ExecuteSql(sql);
+            }
+            */
        }

        private void ExecuteSql(string sql)
@@ -10,9 +10,13 @@ namespace Umbraco.Core.Migrations.Expressions.Delete.DefaultConstraint
        IDeleteDefaultConstraintOnTableBuilder,
        IDeleteDefaultConstraintOnColumnBuilder
    {
-        public DeleteDefaultConstraintBuilder(DeleteDefaultConstraintExpression expression)
+        private readonly IMigrationContext _context;
+
+        public DeleteDefaultConstraintBuilder(IMigrationContext context, DeleteDefaultConstraintExpression expression)
            : base(expression)
-        { }
+        {
+            _context = context;
+        }

        /// <inheritdoc />
        public IDeleteDefaultConstraintOnColumnBuilder OnTable(string tableName)
@@ -25,6 +29,9 @@ namespace Umbraco.Core.Migrations.Expressions.Delete.DefaultConstraint
        public IExecutableBuilder OnColumn(string columnName)
        {
            Expression.ColumnName = columnName;
+            Expression.HasDefaultConstraint = _context.SqlContext.SqlSyntax.TryGetDefaultConstraint(_context.Database, Expression.TableName, columnName, out var constraintName);
+            Expression.ConstraintName = constraintName ?? string.Empty;
+
            return new ExecutableBuilder(Expression);
        }
    }
@@ -1,4 +1,4 @@
-using NPoco;
+using Umbraco.Core.Exceptions;
 using Umbraco.Core.Migrations.Expressions.Common;
 using Umbraco.Core.Migrations.Expressions.Delete.Column;
 using Umbraco.Core.Migrations.Expressions.Delete.Constraint;
@@ -29,9 +29,19 @@ namespace Umbraco.Core.Migrations.Expressions.Delete
        }

        /// <inheritdoc />
-        public IExecutableBuilder KeysAndIndexes(string tableName = null)
+        public IExecutableBuilder KeysAndIndexes<TDto>(bool local = true, bool foreign = true)
        {
-            return new DeleteKeysAndIndexesBuilder(_context) { TableName = tableName };
+            var syntax = _context.SqlContext.SqlSyntax;
+            var tableDefinition = DefinitionFactory.GetTableDefinition(typeof(TDto), syntax);
+            return KeysAndIndexes(tableDefinition.Name, local, foreign);
+        }
+
+        /// <inheritdoc />
+        public IExecutableBuilder KeysAndIndexes(string tableName, bool local = true, bool foreign = true)
+        {
+            if (tableName.IsNullOrWhiteSpace())
+                throw new ArgumentNullOrEmptyException(nameof(tableName));
+            return new DeleteKeysAndIndexesBuilder(_context) { TableName = tableName, DeleteLocal = local, DeleteForeign = foreign };
        }

        /// <inheritdoc />
@@ -100,7 +110,7 @@ namespace Umbraco.Core.Migrations.Expressions.Delete
        public IDeleteDefaultConstraintOnTableBuilder DefaultConstraint()
        {
            var expression = new DeleteDefaultConstraintExpression(_context);
-            return new DeleteDefaultConstraintBuilder(expression);
+            return new DeleteDefaultConstraintBuilder(_context, expression);
        }
    }
 }
@@ -10,12 +10,17 @@ namespace Umbraco.Core.Migrations.Expressions.Delete.Expressions

        public virtual string TableName { get; set; }
        public virtual string ColumnName { get; set; }
+        public virtual string ConstraintName { get; set; }
+        public virtual bool HasDefaultConstraint { get; set; }

        protected override string GetSql()
        {
-            return string.Format(SqlSyntax.DeleteDefaultConstraint,
-                SqlSyntax.GetQuotedTableName(TableName),
-                SqlSyntax.GetQuotedColumnName(ColumnName));
+            return HasDefaultConstraint
+                ? string.Format(SqlSyntax.DeleteDefaultConstraint,
+                    SqlSyntax.GetQuotedTableName(TableName),
+                    SqlSyntax.GetQuotedColumnName(ColumnName),
+                    SqlSyntax.GetQuotedName(ConstraintName))
+                : string.Empty;
        }
    }
 }
@@ -19,9 +19,14 @@ namespace Umbraco.Core.Migrations.Expressions.Delete
        IExecutableBuilder Table(string tableName);

        /// <summary>
-        /// Specifies the table to delete keys and indexes for.
+        /// Builds a Delete Keys and Indexes expression, and executes.
        /// </summary>
-        IExecutableBuilder KeysAndIndexes(string tableName = null);
+        IExecutableBuilder KeysAndIndexes<TDto>(bool local = true, bool foreign = true);
+
+        /// <summary>
+        /// Builds a Delete Keys and Indexes expression, and executes.
+        /// </summary>
+        IExecutableBuilder KeysAndIndexes(string tableName, bool local = true, bool foreign = true);

        /// <summary>
        /// Specifies the column to delete.
@@ -18,34 +18,38 @@ namespace Umbraco.Core.Migrations.Expressions.Delete.KeysAndIndexes

        public string TableName { get; set; }

+        public bool DeleteLocal { get; set; }
+
+        public bool DeleteForeign { get; set; }
+
        /// <inheritdoc />
        public void Do()
        {
-            if (TableName == null)
-            {
-                // drop keys
-                var keys = _context.SqlContext.SqlSyntax.GetConstraintsPerTable(_context.Database).DistinctBy(x => x.Item2).ToArray();
-                foreach (var key in keys.Where(x => x.Item2.StartsWith("FK_")))
-                    Delete.ForeignKey(key.Item2).OnTable(key.Item1).Do();
-                foreach (var key in keys.Where(x => x.Item2.StartsWith("PK_")))
-                    Delete.PrimaryKey(key.Item2).FromTable(key.Item1).Do();
+            _context.BuildingExpression = false;

-                // drop indexes
-                var indexes = _context.SqlContext.SqlSyntax.GetDefinedIndexesDefinitions(_context.Database).DistinctBy(x => x.IndexName).ToArray();
-                foreach (var index in indexes)
-                    Delete.Index(index.IndexName).OnTable(index.TableName).Do();
+            // drop keys
+            if (DeleteLocal || DeleteForeign)
+            {
+                // table, constraint
+                var tableKeys = _context.SqlContext.SqlSyntax.GetConstraintsPerTable(_context.Database).DistinctBy(x => x.Item2).ToList();
+                if (DeleteForeign)
+                {
+                    foreach (var key in tableKeys.Where(x => x.Item1 == TableName && x.Item2.StartsWith("FK_")))
+                        Delete.ForeignKey(key.Item2).OnTable(key.Item1).Do();
+                }
+                if (DeleteLocal)
+                {
+                    foreach (var key in tableKeys.Where(x => x.Item1 == TableName && x.Item2.StartsWith("PK_")))
+                        Delete.PrimaryKey(key.Item2).FromTable(key.Item1).Do();
+
+                    // note: we do *not* delete the DEFAULT constraints
+                }
            }
-            else
-            {
-                // drop keys
-                var keys = _context.SqlContext.SqlSyntax.GetConstraintsPerTable(_context.Database).DistinctBy(x => x.Item2).ToArray();
-                foreach (var key in keys.Where(x => x.Item1 == TableName && x.Item2.StartsWith("FK_")))
-                    Delete.ForeignKey(key.Item2).OnTable(key.Item1).Do();
-                foreach (var key in keys.Where(x => x.Item1 == TableName && x.Item2.StartsWith("PK_")))
-                    Delete.PrimaryKey(key.Item2).FromTable(key.Item1).Do();

-                // drop indexes
-                var indexes = _context.SqlContext.SqlSyntax.GetDefinedIndexesDefinitions(_context.Database).DistinctBy(x => x.IndexName).ToArray();
+            // drop indexes
+            if (DeleteLocal)
+            {
+                var indexes = _context.SqlContext.SqlSyntax.GetDefinedIndexesDefinitions(_context.Database).DistinctBy(x => x.IndexName).ToList();
                foreach (var index in indexes.Where(x => x.TableName == TableName))
                    Delete.Index(index.IndexName).OnTable(index.TableName).Do();
            }
@@ -36,7 +36,7 @@ namespace Umbraco.Core.Migrations
        bool BuildingExpression { get; set; }

        /// <summary>
-        /// Adds a post-migrations.
+        /// Adds a post-migration.
        /// </summary>
        void AddPostMigration<TMigration>()
            where TMigration : IMigration;
@@ -539,7 +539,7 @@ namespace Umbraco.Core.Migrations.Install
            {
                Message =
                    "The database configuration failed with the following message: " + ex.Message +
-                    "\n Please check log file for additional information (can be found in '/App_Data/Logs/UmbracoTraceLog.txt')",
+                    "\n Please check log file for additional information (can be found in '/App_Data/Logs/')",
                Success = false,
                Percentage = "90"
            };
@@ -226,6 +226,8 @@ namespace Umbraco.Core.Migrations.Install
            _database.Insert(Constants.DatabaseSchema.Tables.PropertyType, "id", false, new PropertyTypeDto { Id = 32, UniqueId = 32.ToGuid(), DataTypeId = Constants.DataTypes.LabelDateTime, ContentTypeId = 1044, PropertyTypeGroupId = 11, Alias = Constants.Conventions.Member.LastLockoutDate, Name = Constants.Conventions.Member.LastLockoutDateLabel, SortOrder = 4, Mandatory = false, ValidationRegExp = null, Description = null, Variations = (byte) ContentVariation.Nothing });
            _database.Insert(Constants.DatabaseSchema.Tables.PropertyType, "id", false, new PropertyTypeDto { Id = 33, UniqueId = 33.ToGuid(), DataTypeId = Constants.DataTypes.LabelDateTime, ContentTypeId = 1044, PropertyTypeGroupId = 11, Alias = Constants.Conventions.Member.LastLoginDate, Name = Constants.Conventions.Member.LastLoginDateLabel, SortOrder = 5, Mandatory = false, ValidationRegExp = null, Description = null, Variations = (byte) ContentVariation.Nothing });
            _database.Insert(Constants.DatabaseSchema.Tables.PropertyType, "id", false, new PropertyTypeDto { Id = 34, UniqueId = 34.ToGuid(), DataTypeId = Constants.DataTypes.LabelDateTime, ContentTypeId = 1044, PropertyTypeGroupId = 11, Alias = Constants.Conventions.Member.LastPasswordChangeDate, Name = Constants.Conventions.Member.LastPasswordChangeDateLabel, SortOrder = 6, Mandatory = false, ValidationRegExp = null, Description = null, Variations = (byte) ContentVariation.Nothing });
+            _database.Insert(Constants.DatabaseSchema.Tables.PropertyType, "id", false, new PropertyTypeDto { Id = 35, UniqueId = 35.ToGuid(), DataTypeId = Constants.DataTypes.LabelDateTime, ContentTypeId = 1044, PropertyTypeGroupId = null, Alias = Constants.Conventions.Member.PasswordQuestion, Name = Constants.Conventions.Member.PasswordQuestionLabel, SortOrder = 7, Mandatory = false, ValidationRegExp = null, Description = null, Variations = (byte)ContentVariation.Nothing });
+            _database.Insert(Constants.DatabaseSchema.Tables.PropertyType, "id", false, new PropertyTypeDto { Id = 36, UniqueId = 36.ToGuid(), DataTypeId = Constants.DataTypes.LabelDateTime, ContentTypeId = 1044, PropertyTypeGroupId = null, Alias = Constants.Conventions.Member.PasswordAnswer, Name = Constants.Conventions.Member.PasswordAnswerLabel, SortOrder = 8, Mandatory = false, ValidationRegExp = null, Description = null, Variations = (byte)ContentVariation.Nothing });

        }

@@ -47,7 +47,7 @@ namespace Umbraco.Core.Migrations.Install
            typeof (LogDto),
            typeof (MacroDto),
            typeof (MacroPropertyDto),
-            typeof (MemberTypeDto),
+            typeof (MemberPropertyTypeDto),
            typeof (MemberDto),
            typeof (Member2MemberGroupDto),
            typeof (PropertyTypeGroupDto),
@@ -41,6 +41,7 @@ namespace Umbraco.Core.Migrations
        public void AddPostMigration<TMigration>()
            where TMigration : IMigration
        {
+            // just adding - will be de-duplicated when executing
            PostMigrations.Add(typeof(TMigration));
        }
    }
@@ -92,6 +92,7 @@ namespace Umbraco.Core.Migrations
            if (_executed)
                throw new InvalidOperationException("This expression has already been executed.");
            _executed = true;
+            Context.BuildingExpression = false;

            if (sql == null)
            {
@@ -240,7 +240,8 @@ namespace Umbraco.Core.Migrations
                if (finalState == null)
                    finalState = kvp.Key;
                else
-                    throw new Exception("Multiple final states have been detected.");
+                    throw new InvalidOperationException($"Multiple final states have been detected in the plan (\"{finalState}\", \"{kvp.Key}\")."
+                                                            + " Make sure the plan contains only one final state.");
            }

            // now check for loops
@@ -254,7 +255,8 @@ namespace Umbraco.Core.Migrations
                while (nextTransition != null && !verified.Contains(nextTransition.SourceState))
                {
                    if (visited.Contains(nextTransition.SourceState))
-                        throw new Exception("A loop has been detected.");
+                        throw new InvalidOperationException($"A loop has been detected in the plan around state \"{nextTransition.SourceState}\"."
+                                                                + " Make sure the plan does not contain circular transition paths.");
                    visited.Add(nextTransition.SourceState);
                    nextTransition = _transitions[nextTransition.TargetState];
                }
@@ -264,6 +266,14 @@ namespace Umbraco.Core.Migrations
            _finalState = finalState;
        }

+        /// <summary>
+        /// Throws an exception when the initial state is unknown.
+        /// </summary>
+        protected virtual void ThrowOnUnknownInitialState(string state)
+        {
+            throw new InvalidOperationException($"The migration plan does not support migrating from state \"{state}\".");
+        }
+
        /// <summary>
        /// Executes the plan.
        /// </summary>
@@ -287,13 +297,15 @@ namespace Umbraco.Core.Migrations
            logger.Info<MigrationPlan>("At {OrigState}", string.IsNullOrWhiteSpace(origState) ? "origin": origState);

            if (!_transitions.TryGetValue(origState, out var transition))
-                throw new Exception($"Unknown state \"{origState}\".");
+                ThrowOnUnknownInitialState(origState);

            var context = new MigrationContext(scope.Database, logger);
            context.PostMigrations.AddRange(_postMigrationTypes);

            while (transition != null)
            {
+                logger.Info<MigrationPlan>("Execute {MigrationType}", transition.MigrationType.Name);
+
                var migration = migrationBuilder.Build(transition.MigrationType, context);
                migration.Migrate();

@@ -302,6 +314,8 @@ namespace Umbraco.Core.Migrations

                logger.Info<MigrationPlan>("At {OrigState}", origState);

+                // throw a raw exception here: this should never happen as the plan has
+                // been validated - this is just a paranoid safety test
                if (!_transitions.TryGetValue(origState, out transition))
                    throw new Exception($"Unknown state \"{origState}\".");
            }
@@ -322,7 +336,8 @@ namespace Umbraco.Core.Migrations

            logger.Info<MigrationPlan>("Done (pending scope completion).");

-            // safety check
+            // safety check - again, this should never happen as the plan has been validated,
+            // and this is just a paranoid safety test
            if (origState != _finalState)
                throw new Exception($"Internal error, reached state {origState} which is not final state {_finalState}");

@@ -0,0 +1,21 @@
+using Umbraco.Core.Migrations.Install;
+
+namespace Umbraco.Core.Migrations.Upgrade.Common
+{
+    public class CreateKeysAndIndexes : MigrationBase
+    {
+        public CreateKeysAndIndexes(IMigrationContext context)
+            : base(context)
+        { }
+
+        public override void Migrate()
+        {
+            // remove those that may already have keys
+            Delete.KeysAndIndexes(Constants.DatabaseSchema.Tables.KeyValue).Do();
+
+            // re-create *all* keys and indexes
+            foreach (var x in DatabaseSchemaCreator.OrderedTables)
+                Create.KeysAndIndexes(x).Do();
+        }
+    }
+}
@@ -0,0 +1,75 @@
+namespace Umbraco.Core.Migrations.Upgrade.Common
+{
+    public class DeleteKeysAndIndexes : MigrationBase
+    {
+        public DeleteKeysAndIndexes(IMigrationContext context)
+            : base(context)
+        { }
+
+        public override void Migrate()
+        {
+            // all v7.14 tables
+            var tables = new[]
+            {
+                "cmsContent",
+                "cmsContentType",
+                "cmsContentType2ContentType",
+                "cmsContentTypeAllowedContentType",
+                "cmsContentVersion",
+                "cmsContentXml",
+                "cmsDataType",
+                "cmsDataTypePreValues",
+                "cmsDictionary",
+                "cmsDocument",
+                "cmsDocumentType",
+                "cmsLanguageText",
+                "cmsMacro",
+                "cmsMacroProperty",
+                "cmsMedia",
+                "cmsMember",
+                "cmsMember2MemberGroup",
+                "cmsMemberType",
+                "cmsPreviewXml",
+                "cmsPropertyData",
+                "cmsPropertyType",
+                "cmsPropertyTypeGroup",
+                "cmsTagRelationship",
+                "cmsTags",
+                "cmsTask",
+                "cmsTaskType",
+                "cmsTemplate",
+                "umbracoAccess",
+                "umbracoAccessRule",
+                "umbracoAudit",
+                "umbracoCacheInstruction",
+                "umbracoConsent",
+                "umbracoDomains",
+                "umbracoExternalLogin",
+                "umbracoLanguage",
+                "umbracoLock",
+                "umbracoLog",
+                "umbracoMigration",
+                "umbracoNode",
+                "umbracoRedirectUrl",
+                "umbracoRelation",
+                "umbracoRelationType",
+                "umbracoServer",
+                "umbracoUser",
+                "umbracoUser2NodeNotify",
+                "umbracoUser2UserGroup",
+                "umbracoUserGroup",
+                "umbracoUserGroup2App",
+                "umbracoUserGroup2NodePermission",
+                "umbracoUserLogin",
+                "umbracoUserStartNode",
+            };
+
+            // delete *all* keys and indexes - because of FKs
+            // on known v7 tables only
+            foreach (var table in tables)
+                Delete.KeysAndIndexes(table, false, true).Do();
+            foreach (var table in tables)
+                Delete.KeysAndIndexes(table, true, false).Do();
+        }
+    }
+}
@@ -2,10 +2,10 @@
 using System.Configuration;
 using Semver;
 using Umbraco.Core.Configuration;
-using Umbraco.Core.Migrations.Upgrade.V_7_12_0;
-using Umbraco.Core.Migrations.Upgrade.V_7_14_0;
+using Umbraco.Core.Migrations.Upgrade.Common;
 using Umbraco.Core.Migrations.Upgrade.V_8_0_0;
 using Umbraco.Core.Migrations.Upgrade.V_8_0_1;
+using Umbraco.Core.Migrations.Upgrade.V_8_1_0;

 namespace Umbraco.Core.Migrations.Upgrade
 {
@@ -14,6 +14,9 @@ namespace Umbraco.Core.Migrations.Upgrade
    /// </summary>
    public class UmbracoPlan : MigrationPlan
    {
+        private const string InitPrefix = "{init-";
+        private const string InitSuffix = "}";
+
        /// <summary>
        /// Initializes a new instance of the <see cref="UmbracoPlan"/> class.
        /// </summary>
@@ -23,6 +26,27 @@ namespace Umbraco.Core.Migrations.Upgrade
            DefinePlan();
        }

+        /// <summary>
+        /// Gets the initial state corresponding to a version.
+        /// </summary>
+        private static string GetInitState(SemVersion version)
+            => InitPrefix + version + InitSuffix;
+
+        /// <summary>
+        /// Tries to extract a version from an initial state.
+        /// </summary>
+        private static bool TryGetInitStateVersion(string state, out string version)
+        {
+            if (state.StartsWith(InitPrefix) && state.EndsWith(InitSuffix))
+            {
+                version = state.TrimStart(InitPrefix).TrimEnd(InitSuffix);
+                return true;
+            }
+
+            version = null;
+            return false;
+        }
+
        /// <inheritdoc />
        /// <remarks>
        /// <para>The default initial state in plans is string.Empty.</para>
@@ -40,23 +64,32 @@ namespace Umbraco.Core.Migrations.Upgrade
                if (!SemVersion.TryParse(ConfigurationManager.AppSettings[Constants.AppSettings.ConfigurationStatus], out var currentVersion))
                    throw new InvalidOperationException($"Could not get current version from web.config {Constants.AppSettings.ConfigurationStatus} appSetting.");

-                // we currently support upgrading from 7.10.0 and later
-                if (currentVersion < new SemVersion(7, 10))
-                    throw new InvalidOperationException($"Version {currentVersion} cannot be migrated to {UmbracoVersion.SemanticVersion}.");
-
                // cannot go back in time
                if (currentVersion > UmbracoVersion.SemanticVersion)
                    throw new InvalidOperationException($"Version {currentVersion} cannot be downgraded to {UmbracoVersion.SemanticVersion}.");

-                // upgrading from version 7 => initial state is eg "{init-7.10.0}"
-                // anything else is not supported - ie if 8 and above, we should have an initial state already
-                if (currentVersion.Major != 7)
-                    throw new InvalidOperationException($"Version {currentVersion} is not supported by the migration plan.");
+                // only from 7.14.0 and above
+                var minVersion = new SemVersion(7, 14);
+                if (currentVersion < minVersion)
+                    throw new InvalidOperationException($"Version {currentVersion} cannot be migrated to {UmbracoVersion.SemanticVersion}."
+                                                        + $" Please upgrade first to at least {minVersion}.");

-                return "{init-" + currentVersion + "}";
+                // initial state is eg "{init-7.14.0}"
+                return GetInitState(currentVersion);
            }
        }

+        protected override void ThrowOnUnknownInitialState(string state)
+        {
+            if (TryGetInitStateVersion(state, out var initVersion))
+            {
+                throw new InvalidOperationException($"Version {UmbracoVersion.SemanticVersion} does not support migrating from {initVersion}."
+                                                    + $" Please verify which versions support migrating from {initVersion}.");
+            }
+
+            base.ThrowOnUnknownInitialState(state);
+        }
+
        // define the plan
        protected void DefinePlan()
        {
@@ -69,21 +102,23 @@ namespace Umbraco.Core.Migrations.Upgrade
            //
            //     If the new migration causes a merge conflict, because someone else also added another
            //     new migration, you NEED to fix the conflict by providing one default path, and paths
-            //     out of the conflict states (see example below).
+            //     out of the conflict states (see examples below).
            //
            // * Porting from version 7:
            //     Append the ported migration to the main chain, using a new guid (same as above).
-            //     Create a new special chain from the {init-...} state to the main chain (see example
-            //     below).
+            //     Create a new special chain from the {init-...} state to the main chain.


-            // plan starts at 7.10.0 (anything before 7.10.0 is not supported)
-            // upgrades from 7 to 8, and then takes care of all eventual upgrades
+            // plan starts at 7.14.0 (anything before 7.14.0 is not supported)
            //
-            From("{init-7.10.0}");
+            From(GetInitState(new SemVersion(7, 14, 0)));
+
+            // begin migrating from v7 - remove all keys and indexes
+            To<DeleteKeysAndIndexes>("{B36B9ABD-374E-465B-9C5F-26AB0D39326F}");
+
            To<AddLockObjects>("{7C447271-CA3F-4A6A-A913-5D77015655CB}");
            To<AddContentNuTable>("{CBFF58A2-7B50-4F75-8E98-249920DB0F37}");
-            To<RefactorXmlColumns>("{3D18920C-E84D-405C-A06A-B7CEE52FE5DD}");
+            To<RenameMediaVersionTable>("{5CB66059-45F4-48BA-BCBD-C5035D79206B}");
            To<VariantsMigration>("{FB0A5429-587E-4BD0-8A67-20F0E7E62FF7}");
            To<DropMigrationsTable>("{F0C42457-6A3B-4912-A7EA-F27ED85A2092}");
            To<DataTypeMigration>("{8640C9E4-A1C0-4C59-99BB-609B4E604981}");
@@ -94,90 +129,55 @@ namespace Umbraco.Core.Migrations.Upgrade
            ToWithReplace<AddVariationTables2, AddVariationTables1A>("{941B2ABA-2D06-4E04-81F5-74224F1DB037}", "{76DF5CD7-A884-41A5-8DC6-7860D95B1DF5}"); // kill AddVariationTable1
            To<RefactorMacroColumns>("{A7540C58-171D-462A-91C5-7A9AA5CB8BFD}");

-            Merge().To<UserForeignKeys>("{3E44F712-E2E3-473A-AE49-5D7F8E67CE3F}") // shannon added that one
-            .With().To<AddTypedLabels>("{65D6B71C-BDD5-4A2E-8D35-8896325E9151}") // stephan added that one
+            Merge()
+                .To<UserForeignKeys>("{3E44F712-E2E3-473A-AE49-5D7F8E67CE3F}")
+            .With()
+                .To<AddTypedLabels>("{65D6B71C-BDD5-4A2E-8D35-8896325E9151}")
            .As("{4CACE351-C6B9-4F0C-A6BA-85A02BBD39E4}");

            To<ContentVariationMigration>("{1350617A-4930-4D61-852F-E3AA9E692173}");
-            To<UpdateUmbracoConsent>("{39E5B1F7-A50B-437E-B768-1723AEC45B65}"); // from 7.12.0
-
-            Merge()
-                .To<AddRelationTypeForMediaFolderOnDelete>("{0541A62B-EF87-4CA2-8225-F0EB98ECCC9F}") // from 7.12.0
-                .To<IncreaseLanguageIsoCodeColumnLength>("{EB34B5DC-BB87-4005-985E-D983EA496C38}") // from 7.12.0
-                .To<RenameTrueFalseField>("{517CE9EA-36D7-472A-BF4B-A0D6FB1B8F89}") // from 7.12.0
-                .To<SetDefaultTagsStorageType>("{BBD99901-1545-40E4-8A5A-D7A675C7D2F2}") // from 7.12.0
-            .With()
-                .To<FallbackLanguage>("{CF51B39B-9B9A-4740-BB7C-EAF606A7BFBF}") // andy added that one
-            .As("{8B14CEBD-EE47-4AAD-A841-93551D917F11}");
-
-            ToWithReplace<UpdateDefaultMandatoryLanguage>("{2C87AA47-D1BC-4ECB-8A73-2D8D1046C27F}", "{5F4597F4-A4E0-4AFE-90B5-6D2F896830EB}"); // merge
-            ToWithReplace<RefactorVariantsModel>("{B19BF0F2-E1C6-4AEB-A146-BC559D97A2C6}", "{290C18EE-B3DE-4769-84F1-1F467F3F76DA}"); // merge
+            To<FallbackLanguage>("{CF51B39B-9B9A-4740-BB7C-EAF606A7BFBF}");
+            To<UpdateDefaultMandatoryLanguage>("{5F4597F4-A4E0-4AFE-90B5-6D2F896830EB}");
+            To<RefactorVariantsModel>("{290C18EE-B3DE-4769-84F1-1F467F3F76DA}");
            To<DropTaskTables>("{6A2C7C1B-A9DB-4EA9-B6AB-78E7D5B722A7}");
-            To<FixLockTablePrimaryKey>("{77874C77-93E5-4488-A404-A630907CEEF0}");
            To<AddLogTableColumns>("{8804D8E8-FE62-4E3A-B8A2-C047C2118C38}");
            To<DropPreValueTable>("{23275462-446E-44C7-8C2C-3B8C1127B07D}");
            To<DropDownPropertyEditorsMigration>("{6B251841-3069-4AD5-8AE9-861F9523E8DA}");
            To<TagsMigrationFix>("{EE429F1B-9B26-43CA-89F8-A86017C809A3}");
            To<DropTemplateDesignColumn>("{08919C4B-B431-449C-90EC-2B8445B5C6B1}");
            To<TablesForScheduledPublishing>("{7EB0254C-CB8B-4C75-B15B-D48C55B449EB}");
-            To<DropTaskTables>("{648A2D5F-7467-48F8-B309-E99CEEE00E2A}"); // fixed version
            To<MakeTagsVariant>("{C39BF2A7-1454-4047-BBFE-89E40F66ED63}");
            To<MakeRedirectUrlVariant>("{64EBCE53-E1F0-463A-B40B-E98EFCCA8AE2}");
            To<AddContentTypeIsElementColumn>("{0009109C-A0B8-4F3F-8FEB-C137BBDDA268}");
-            To<UpdateMemberGroupPickerData>("{8A027815-D5CD-4872-8B88-9A51AB5986A6}"); // from 7.14.0
            To<ConvertRelatedLinksToMultiUrlPicker>("{ED28B66A-E248-4D94-8CDB-9BDF574023F0}");
            To<UpdatePickerIntegerValuesToUdi>("{38C809D5-6C34-426B-9BEA-EFD39162595C}");
            To<RenameUmbracoDomainsTable>("{6017F044-8E70-4E10-B2A3-336949692ADD}");
-            To<AddUserLoginDtoDateIndex>("{98339BEF-E4B2-48A8-B9D1-D173DC842BBE}");

            Merge()
                .To<DropXmlTables>("{CDBEDEE4-9496-4903-9CF2-4104E00FF960}")
            .With()
-                .To<RadioAndCheckboxAndDropdownPropertyEditorsMigration>("{940FD19A-00A8-4D5C-B8FF-939143585726}")
+                .To<RadioAndCheckboxPropertyEditorsMigration>("{940FD19A-00A8-4D5C-B8FF-939143585726}")
            .As("{0576E786-5C30-4000-B969-302B61E90CA3}");

+            To<FixLanguageIsoCodeLength>("{48AD6CCD-C7A4-4305-A8AB-38728AD23FC5}");
+
+            // finish migrating from v7 - recreate all keys and indexes
+            To<CreateKeysAndIndexes>("{3F9764F5-73D0-4D45-8804-1240A66E43A2}");
+
            To<RenameLabelAndRichTextPropertyEditorAliases>("{E0CBE54D-A84F-4A8F-9B13-900945FD7ED9}");
            To<MergeDateAndDateTimePropertyEditor>("{78BAF571-90D0-4D28-8175-EF96316DA789}");
+            // release-8.0.0
+
+            // to 8.0.1...
            To<ChangeNuCacheJsonFormat>("{80C0A0CB-0DD5-4573-B000-C4B7C313C70D}");
+            // release-8.0.1
+
+            // to 8.1.0...
+            To<ConvertTinyMceAndGridMediaUrlsToLocalLink>("{B69B6E8C-A769-4044-A27E-4A4E18D1645A}");
+            To<RenameUserLoginDtoDateIndex>("{0372A42B-DECF-498D-B4D1-6379E907EB94}");
+            To<FixContentNuCascade>("{5B1E0D93-F5A3-449B-84BA-65366B84E2D4}");

            //FINAL
-
-
-
-
-            // and then, need to support upgrading from more recent 7.x
-            //
-            From("{init-7.10.1}").To("{init-7.10.0}"); // same as 7.10.0
-            From("{init-7.10.2}").To("{init-7.10.0}"); // same as 7.10.0
-            From("{init-7.10.3}").To("{init-7.10.0}"); // same as 7.10.0
-            From("{init-7.10.4}").To("{init-7.10.0}"); // same as 7.10.0
-            From("{init-7.10.5}").To("{init-7.10.0}"); // same as 7.10.0
-            From("{init-7.11.0}").To("{init-7.10.0}"); // same as 7.10.0
-            From("{init-7.11.1}").To("{init-7.10.0}"); // same as 7.10.0
-            From("{init-7.11.2}").To("{init-7.10.0}"); // same as 7.10.0
-
-            // 7.12.0 has migrations, define a custom chain which copies the chain
-            // going from {init-7.10.0} to former final (1350617A) , and then goes straight to
-            // main chain, skipping the migrations
-            //
-            From("{init-7.12.0}");
-            // clone start / clone stop / target
-            ToWithClone("{init-7.10.0}", "{1350617A-4930-4D61-852F-E3AA9E692173}", "{BBD99901-1545-40E4-8A5A-D7A675C7D2F2}");
-
-            From("{init-7.12.1}").To("{init-7.10.0}"); // same as 7.12.0
-            From("{init-7.12.2}").To("{init-7.10.0}"); // same as 7.12.0
-            From("{init-7.12.3}").To("{init-7.10.0}"); // same as 7.12.0
-            From("{init-7.12.4}").To("{init-7.10.0}"); // same as 7.12.0
-            From("{init-7.13.0}").To("{init-7.10.0}"); // same as 7.12.0
-            From("{init-7.13.1}").To("{init-7.10.0}"); // same as 7.12.0
-                
-            // 7.14.0 has migrations, handle it...
-            //  clone going from 7.10 to 1350617A (the last one before we started to merge 7.12 migrations), then
-            //  clone going from CF51B39B (after 7.12 migrations) to 0009109C (the last one before we started to merge 7.12 migrations),
-            //  ending in 8A027815 (after 7.14 migrations)
-            From("{init-7.14.0}")
-                .ToWithClone("{init-7.10.0}", "{1350617A-4930-4D61-852F-E3AA9E692173}", "{9109B8AF-6B34-46EE-9484-7434196D0C79}")
-                .ToWithClone("{CF51B39B-9B9A-4740-BB7C-EAF606A7BFBF}", "{0009109C-A0B8-4F3F-8FEB-C137BBDDA268}", "{8A027815-D5CD-4872-8B88-9A51AB5986A6}");
        }
    }
 }
@@ -1,36 +0,0 @@
-using System.IO;
-using Umbraco.Core.IO;
-using File = System.IO.File;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_10_0
-{
-    /// <summary>
-    /// Renames the preview folder containing static HTML files to ensure it does not interfere with the MVC route
-    /// that is now supposed to render these views dynamically. We don't want to delete as people may have made
-    /// customizations to these files that would need to be migrated to the new .cshtml view files.
-    /// </summary>
-    public class RenamePreviewFolder : MigrationBase
-    {
-        public RenamePreviewFolder(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var previewFolderPath = IOHelper.MapPath(SystemDirectories.Umbraco + "/preview");
-            if (Directory.Exists(previewFolderPath))
-            {
-                var newPath = previewFolderPath.Replace("preview", "preview.old");
-                if (Directory.Exists(newPath) == false)
-                {
-                    Directory.Move(previewFolderPath, newPath);
-                    var readmeText =
-                        $"Static HTML files used for preview and canvas editing functionality no longer live in this directory.\r\n" +
-                        $"Instead they have been recreated as MVC views and can now be found in '~/Umbraco/Views/Preview'.\r\n" +
-                        $"See issue: http://issues.umbraco.org/issue/U4-11090";
-                    File.WriteAllText(Path.Combine(newPath, "readme.txt"), readmeText);
-                }
-            }
-        }
-    }
-}
@@ -1,33 +0,0 @@
-using Umbraco.Core.Persistence.Dtos;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_12_0
-{
-    public class AddRelationTypeForMediaFolderOnDelete : MigrationBase
-    {
-
-        public AddRelationTypeForMediaFolderOnDelete(IMigrationContext context) : base(context)
-        {
-        }
-
-        public override void Migrate()
-        {
-            var relationTypeCount = Context.Database.ExecuteScalar<int>("SELECT COUNT(*) FROM umbracoRelationType WHERE alias=@alias",
-                new { alias = Constants.Conventions.RelationTypes.RelateParentMediaFolderOnDeleteAlias });
-
-            if (relationTypeCount > 0)
-                return;
-
-            var uniqueId = (Constants.Conventions.RelationTypes.RelateParentMediaFolderOnDeleteAlias + "____" + Constants.Conventions.RelationTypes.RelateParentMediaFolderOnDeleteName).ToGuid();
-            Insert.IntoTable("umbracoRelationType").Row(new
-            {
-                typeUniqueId = uniqueId,
-                alias = Constants.Conventions.RelationTypes.RelateParentMediaFolderOnDeleteAlias,
-                name = Constants.Conventions.RelationTypes.RelateParentMediaFolderOnDeleteName,
-                childObjectType = Constants.ObjectTypes.MediaType,
-                parentObjectType = Constants.ObjectTypes.MediaType,
-                dual = false
-                }).Do();
-        }
-
-    }
-}
@@ -1,46 +0,0 @@
-using System.Linq;
-using Umbraco.Core.Persistence.DatabaseModelDefinitions;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_12_0
-{
-    public class IncreaseLanguageIsoCodeColumnLength : MigrationBase
-    {
-        public IncreaseLanguageIsoCodeColumnLength(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            // Some people seem to have a constraint in their DB instead of an index, we'd need to drop that one
-            // See: https://our.umbraco.com/forum/using-umbraco-and-getting-started/93282-upgrade-from-711-to-712-fails
-            var constraints = SqlSyntax.GetConstraintsPerTable(Context.Database).Distinct().ToArray();
-            if (constraints.Any(x => x.Item2.InvariantEquals("IX_umbracoLanguage_languageISOCode")))
-            {
-                Delete.UniqueConstraint("IX_umbracoLanguage_languageISOCode").FromTable("umbracoLanguage").Do();
-            }
-
-            //Now check for indexes of that name and drop that if it exists
-            var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(Context.Database);
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_umbracoLanguage_languageISOCode")))
-            {
-                Delete.Index("IX_umbracoLanguage_languageISOCode").OnTable("umbracoLanguage").Do();
-            }
-
-            Alter.Table("umbracoLanguage")
-                .AlterColumn("languageISOCode")
-                .AsString(14)
-                .Nullable()
-                .Do();
-
-            Create.Index("IX_umbracoLanguage_languageISOCode")
-                .OnTable("umbracoLanguage")
-                .OnColumn("languageISOCode")
-                .Ascending()
-                .WithOptions()
-                .Unique()
-                .Do();
-        }
-
-    }
-}
@@ -1,19 +0,0 @@
-using Umbraco.Core.Logging;
-using Umbraco.Core.Persistence.Dtos;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_12_0
-{
-    public class RenameTrueFalseField : MigrationBase
-    {
-        public RenameTrueFalseField(IMigrationContext context) : base(context)
-        {
-        }
-
-        public override void Migrate()
-        {
-            //rename the existing true/false field
-            Update.Table(NodeDto.TableName).Set(new { text = "Checkbox" }).Where(new { id = Constants.DataTypes.Boolean }).Do();
-        }
-    }
-}
@@ -1,51 +0,0 @@
-using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
-using Umbraco.Core.Models;
-using Umbraco.Core.Persistence;
-using Umbraco.Core.Persistence.Dtos;
-using Umbraco.Core.PropertyEditors;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_12_0
-{
-    /// <summary>
-    /// Set the default storageType for the tags datatype to "CSV" to ensure backwards compatibility since the default is going to be JSON in new versions.
-    /// </summary>
-    public class SetDefaultTagsStorageType : MigrationBase
-    {
-        public SetDefaultTagsStorageType(IMigrationContext context)
-            : base(context)
-        { }
-
-        // dummy editor for deserialization
-        private class TagConfigurationEditor : ConfigurationEditor<TagConfiguration>
-        { }
-
-        public override void Migrate()
-        {
-            // get all Umbraco.Tags datatypes
-            var dataTypeDtos = Database.Fetch<DataTypeDto>(Context.SqlContext.Sql()
-                .Select<DataTypeDto>()
-                .From<DataTypeDto>()
-                .Where<DataTypeDto>(x => x.EditorAlias == Constants.PropertyEditors.Aliases.Tags));
-
-            // get a dummy editor for deserialization
-            var editor = new TagConfigurationEditor();
-
-            foreach (var dataTypeDto in dataTypeDtos)
-            {
-                // need to check storageType on raw dictionary, as TagConfiguration would have a default value
-                var dictionary = JsonConvert.DeserializeObject<JObject>(dataTypeDto.Configuration);
-
-                // if missing, use TagConfiguration to properly update the configuration
-                // due to ... reasons ... the key can start with a lower or upper 'S'
-                if (!dictionary.ContainsKey("storageType") && !dictionary.ContainsKey("StorageType"))
-                {
-                    var configuration = (TagConfiguration)editor.FromDatabase(dataTypeDto.Configuration);
-                    configuration.StorageType = TagsStorageType.Csv;
-                    dataTypeDto.Configuration = ConfigurationEditor.ToDatabase(configuration);
-                    Database.Update(dataTypeDto);
-                }
-            }
-        }
-    }
-}
@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_12_0
-{
    public class UpdateUmbracoConsent : MigrationBase
    {
-        public UpdateUmbracoConsent(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
        {
            Alter.Table(Constants.DatabaseSchema.Tables.Consent).AlterColumn("comment").AsString().Nullable().Do();
        }
-    }
-}
@@ -1,29 +0,0 @@
-namespace Umbraco.Core.Migrations.Upgrade.V_7_14_0
-{
-    /// <summary>
-    /// Migrates member group picker properties from NVarchar to NText. See https://github.com/umbraco/Umbraco-CMS/issues/3268.
-    /// </summary>
-    public class UpdateMemberGroupPickerData : MigrationBase
-    {
-        /// <summary>
-        /// Migrates member group picker properties from NVarchar to NText. See https://github.com/umbraco/Umbraco-CMS/issues/3268.
-        /// </summary>
-        public UpdateMemberGroupPickerData(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            Database.Execute($@"UPDATE umbracoPropertyData SET textValue = varcharValue, varcharValue = NULL
-                WHERE textValue IS NULL AND id IN (
-	                SELECT id FROM umbracoPropertyData WHERE propertyTypeId in (
-		                SELECT id from cmsPropertyType where dataTypeId IN (
-			                SELECT nodeId FROM umbracoDataType WHERE propertyEditorAlias = '{Constants.PropertyEditors.Aliases.MemberGroupPicker}'
-                    )
-                )
-            )");
-
-            Database.Execute($"UPDATE umbracoDataType SET dbType = 'Ntext' WHERE propertyEditorAlias = '{Constants.PropertyEditors.Aliases.MemberGroupPicker}'");
-        }
-    }
-}
@@ -1,50 +0,0 @@
-using System.Linq;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_5_0
-{
-    public class AddRedirectUrlTable : MigrationBase
-    {
-        public AddRedirectUrlTable(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var database = Database;
-            var umbracoRedirectUrlTableName = "umbracoRedirectUrl";
-
-            var tables = SqlSyntax.GetTablesInSchema(database).ToArray();
-
-            if (tables.InvariantContains(umbracoRedirectUrlTableName))
-            {
-                var columns = SqlSyntax.GetColumnsInSchema(database).ToArray();
-                if (columns.Any(x => x.TableName.InvariantEquals(umbracoRedirectUrlTableName) && x.ColumnName.InvariantEquals("id") && x.DataType == "uniqueidentifier"))
-                    return;
-                Delete.Table(umbracoRedirectUrlTableName).Do();
-            }
-
-            Create.Table(umbracoRedirectUrlTableName)
-                .WithColumn("id").AsGuid().NotNullable().PrimaryKey("PK_" + umbracoRedirectUrlTableName)
-                .WithColumn("createDateUtc").AsDateTime().NotNullable()
-                .WithColumn("url").AsString(2048).NotNullable()
-                .WithColumn("contentKey").AsGuid().NotNullable()
-                .WithColumn("urlHash").AsString(40).NotNullable()
-                .Do();
-
-            Create.Index("IX_" + umbracoRedirectUrlTableName).OnTable(umbracoRedirectUrlTableName)
-                .OnColumn("urlHash")
-                .Ascending()
-                .OnColumn("contentKey")
-                .Ascending()
-                .OnColumn("createDateUtc")
-                .Descending()
-                .WithOptions().NonClustered()
-                .Do();
-
-            Create.ForeignKey("FK_" + umbracoRedirectUrlTableName)
-                .FromTable(umbracoRedirectUrlTableName).ForeignColumn("contentKey")
-                .ToTable("umbracoNode").PrimaryColumn("uniqueID")
-                .Do();
-        }
-    }
-}
@@ -1,40 +0,0 @@
-using System;
-using System.Linq;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_5_0
-{
-    /// <summary>
-    /// This is here to re-remove these tables, we dropped them in 7.3 but new installs created them again so we're going to re-drop them
-    /// </summary>
-    public class RemoveStylesheetDataAndTablesAgain : MigrationBase
-    {
-        public RemoveStylesheetDataAndTablesAgain(IMigrationContext context)
-            : base(context)
-        {
-        }
-
-        public override void Migrate()
-        {
-            // these have been obsoleted, need to copy the values here
-            var stylesheetPropertyObjectType = new Guid("5555da4f-a123-42b2-4488-dcdfb25e4111");
-            var stylesheetObjectType = new Guid("9F68DA4F-A3A8-44C2-8226-DCBD125E4840");
-
-            //Clear all stylesheet data if the tables exist
-            var tables = SqlSyntax.GetTablesInSchema(Context.Database).ToArray();
-            if (tables.InvariantContains("cmsStylesheetProperty"))
-            {
-                Delete.FromTable("cmsStylesheetProperty").AllRows().Do();
-                Delete.FromTable("umbracoNode").Row(new { nodeObjectType = stylesheetPropertyObjectType }).Do();
-
-                Delete.Table("cmsStylesheetProperty").Do();
-            }
-            if (tables.InvariantContains("cmsStylesheet"))
-            {
-                Delete.FromTable("cmsStylesheet").AllRows().Do();
-                Delete.FromTable("umbracoNode").Row(new { nodeObjectType = stylesheetObjectType }).Do();
-
-                Delete.Table("cmsStylesheet").Do();
-            }
-        }
-    }
-}
@@ -1,44 +0,0 @@
-using System.Linq;
-using Umbraco.Core.Persistence;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_5_0
-{
-    /// <summary>
-    /// See: http://issues.umbraco.org/issue/U4-8522
-    /// </summary>
-    public class UpdateUniqueIndexOnPropertyData : MigrationBase
-    {
-        public UpdateUniqueIndexOnPropertyData(IMigrationContext context)
-            : base(context)
-        {
-        }
-
-        public override void Migrate()
-        {
-            //Clear all stylesheet data if the tables exist
-            //tuple = tablename, indexname, columnname, unique
-            var indexes = SqlSyntax.GetDefinedIndexes(Context.Database).ToArray();
-            var found = indexes.FirstOrDefault(
-                x => x.Item1.InvariantEquals("cmsPropertyData")
-                     && x.Item2.InvariantEquals("IX_cmsPropertyData_1")
-                    //we're searching for the old index which is not unique
-                     && x.Item4 == false);
-
-            if (found != null)
-            {
-                Database.Execute("DELETE FROM cmsPropertyData WHERE id NOT IN (SELECT MIN(id) FROM cmsPropertyData GROUP BY nodeId, versionId, propertytypeid HAVING MIN(id) IS NOT NULL)");
-
-                //we need to re create this index
-                Delete.Index("IX_cmsPropertyData_1").OnTable("cmsPropertyData").Do();
-                Create.Index("IX_cmsPropertyData_1").OnTable("cmsPropertyData")
-                    .OnColumn("nodeId").Ascending()
-                    .OnColumn("versionId").Ascending()
-                    .OnColumn("propertytypeid").Ascending()
-                    .WithOptions().NonClustered()
-                    .WithOptions().Unique()
-                    .Do();
-            }
-        }
-    }
-}
@@ -1,17 +0,0 @@
-namespace Umbraco.Core.Migrations.Upgrade.V_7_5_5
-{
-    /// <summary>
-    /// See: http://issues.umbraco.org/issue/U4-4196
-    /// </summary>
-    public class UpdateAllowedMediaTypesAtRoot : MigrationBase
-    {
-        public UpdateAllowedMediaTypesAtRoot(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            Database.Execute("UPDATE cmsContentType SET allowAtRoot = 1 WHERE nodeId = 1032 OR nodeId = 1033");
-        }
-    }
-}
@@ -1,41 +0,0 @@
-using System.Linq;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddIndexToCmsMemberLoginName : MigrationBase
-    {
-        public AddIndexToCmsMemberLoginName(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var database = Database;
-
-            //Now we need to check if we can actually d6 this because we won't be able to if there's data in there that is too long
-            //http://issues.umbraco.org/issue/U4-9758
-
-            var colLen = database.ExecuteScalar<int?>("select max(datalength(LoginName)) from cmsMember");
-
-            if (colLen < 900 == false && colLen != null)
-            {
-                return;
-            }
-
-            var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(Context.Database);
-
-            //make sure it doesn't already exist
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_cmsMember_LoginName")) == false)
-            {
-                //we can apply the index
-                Create.Index("IX_cmsMember_LoginName").OnTable("cmsMember")
-                    .OnColumn("LoginName")
-                    .Ascending()
-                    .WithOptions()
-                    .NonClustered()
-                    .Do();
-            }
-        }
-    }
-}
@@ -1,28 +0,0 @@
-using System.Linq;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddIndexToUmbracoNodePath : MigrationBase
-    {
-        public AddIndexToUmbracoNodePath(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(Context.Database);
-
-            //make sure it doesn't already exist
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_umbracoNodePath")) == false)
-            {
-                Create.Index("IX_umbracoNodePath").OnTable("umbracoNode")
-                    .OnColumn("path")
-                    .Ascending()
-                    .WithOptions()
-                    .NonClustered()
-                    .Do();
-            }
-        }
-    }
-}
@@ -1,28 +0,0 @@
-using System.Linq;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddIndexToUser2NodePermission : MigrationBase
-    {
-        public AddIndexToUser2NodePermission(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(Context.Database);
-
-            //make sure it doesn't already exist
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_umbracoUser2NodePermission_nodeId")) == false)
-            {
-                Create.Index("IX_umbracoUser2NodePermission_nodeId").OnTable("umbracoUser2NodePermission")
-                    .OnColumn("nodeId")
-                    .Ascending()
-                    .WithOptions()
-                    .NonClustered()
-                    .Do();
-            }
-        }
-    }
-}
@@ -1,85 +0,0 @@
-using System;
-using System.Linq;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddIndexesToUmbracoRelationTables : MigrationBase
-    {
-        public AddIndexesToUmbracoRelationTables(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(Context.Database).ToArray();
-
-            //make sure it doesn't already exist
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_umbracoRelation_parentChildType")) == false)
-            {
-                //This will remove any corrupt/duplicate data in the relation table before the index is applied
-                //Ensure this executes in a deferred block which will be done inside of the migration transaction
-                var database = Database;
-
-                //We need to check if this index has corrupted data and then clear that data
-                var duplicates = database.Fetch<dynamic>("SELECT parentId,childId,relType FROM umbracoRelation GROUP BY parentId,childId,relType HAVING COUNT(*) > 1");
-                if (duplicates.Count > 0)
-                {
-                    //need to fix this there cannot be duplicates so we'll take the latest entries, it's really not going to matter though
-                    foreach (var duplicate in duplicates)
-                    {
-                        var ids = database.Fetch<int>("SELECT id FROM umbracoRelation WHERE parentId=@parentId AND childId=@childId AND relType=@relType ORDER BY datetime DESC",
-                            new { parentId = duplicate.parentId, childId = duplicate.childId, relType = duplicate.relType });
-
-                        if (ids.Count == 1)
-                        {
-                            //this is just a safety check, this should absolutely never happen
-                            throw new InvalidOperationException("Duplicates were detected but could not be discovered");
-                        }
-
-                        //delete the others
-                        ids = ids.Skip(0).ToList();
-
-                        //iterate in groups of 2000 to avoid the max sql parameter limit
-                        foreach (var idGroup in ids.InGroupsOf(2000))
-                        {
-                            database.Execute("DELETE FROM umbracoRelation WHERE id IN (@ids)", new { ids = idGroup });
-                        }
-                    }
-                }
-
-                //unique index to prevent duplicates - and for better perf
-                Create.Index("IX_umbracoRelation_parentChildType").OnTable("umbracoRelation")
-                    .OnColumn("parentId").Ascending()
-                    .OnColumn("childId").Ascending()
-                    .OnColumn("relType").Ascending()
-                    .WithOptions()
-                    .Unique()
-                    .Do();
-            }
-
-            //need indexes on alias and name for relation type since these are queried against
-
-            //make sure it doesn't already exist
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_umbracoRelationType_alias")) == false)
-            {
-                Create.Index("IX_umbracoRelationType_alias").OnTable("umbracoRelationType")
-                    .OnColumn("alias")
-                    .Ascending()
-                    .WithOptions()
-                    .NonClustered()
-                    .Do();
-            }
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_umbracoRelationType_name")) == false)
-            {
-                Create.Index("IX_umbracoRelationType_name").OnTable("umbracoRelationType")
-                    .OnColumn("name")
-                    .Ascending()
-                    .WithOptions()
-                    .NonClustered()
-                    .Do();
-            }
-
-        }
-    }
-}
@@ -1,27 +0,0 @@
-using Umbraco.Core.Persistence.Dtos;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddLockObjects : MigrationBase
-    {
-        public AddLockObjects(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            EnsureLockObject(Constants.Locks.Servers, "Servers");
-        }
-
-        private void EnsureLockObject(int id, string name)
-        {
-            var db = Database;
-            var exists = db.Exists<LockDto>(id);
-            if (exists) return;
-            // be safe: delete old umbracoNode lock objects if any
-            db.Execute("DELETE FROM umbracoNode WHERE id=@id;", new { id });
-            // then create umbracoLock object
-            db.Execute("INSERT umbracoLock (id, name, value) VALUES (@id, @name, 1);", new { id, name });
-        }
-    }
-}
@@ -1,24 +0,0 @@
-using System.Linq;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddLockTable : MigrationBase
-    {
-        public AddLockTable(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var tables = SqlSyntax.GetTablesInSchema(Context.Database).ToArray();
-            if (tables.InvariantContains("umbracoLock") == false)
-            {
-                Create.Table("umbracoLock")
-                    .WithColumn("id").AsInt32().PrimaryKey("PK_umbracoLock")
-                    .WithColumn("value").AsInt32().NotNullable()
-                    .WithColumn("name").AsString(64).NotNullable()
-                    .Do();
-            }
-        }
-    }
-}
@@ -1,68 +0,0 @@
-using System;
-using System.Linq;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddMacroUniqueIdColumn : MigrationBase
-    {
-        public AddMacroUniqueIdColumn(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var columns = SqlSyntax.GetColumnsInSchema(Context.Database).ToArray();
-
-            if (columns.Any(x => x.TableName.InvariantEquals("cmsMacro") && x.ColumnName.InvariantEquals("uniqueId")) == false)
-            {
-                Create.Column("uniqueId").OnTable("cmsMacro").AsGuid().Nullable().Do();
-                UpdateMacroGuids();
-                Alter.Table("cmsMacro").AlterColumn("uniqueId").AsGuid().NotNullable().Do();
-                Create.Index("IX_cmsMacro_UniqueId").OnTable("cmsMacro").OnColumn("uniqueId")
-                    .Ascending()
-                    .WithOptions().NonClustered()
-                    .WithOptions().Unique()
-                    .Do();
-
-            }
-
-            if (columns.Any(x => x.TableName.InvariantEquals("cmsMacroProperty") && x.ColumnName.InvariantEquals("uniquePropertyId")) == false)
-            {
-                Create.Column("uniquePropertyId").OnTable("cmsMacroProperty").AsGuid().Nullable().Do();
-                UpdateMacroPropertyGuids();
-                Alter.Table("cmsMacroProperty").AlterColumn("uniquePropertyId").AsGuid().NotNullable().Do();
-                Create.Index("IX_cmsMacroProperty_UniquePropertyId").OnTable("cmsMacroProperty").OnColumn("uniquePropertyId")
-                    .Ascending()
-                    .WithOptions().NonClustered()
-                    .WithOptions().Unique()
-                    .Do();
-            }
-        }
-
-        private void UpdateMacroGuids()
-        {
-            var database = Database;
-
-            var updates = database.Query<dynamic>("SELECT id, macroAlias FROM cmsMacro")
-                .Select(macro => Tuple.Create((int) macro.id, ("macro____" + (string) macro.macroAlias).ToGuid()))
-                .ToList();
-
-            foreach (var update in updates)
-                database.Execute("UPDATE cmsMacro set uniqueId=@guid WHERE id=@id", new { guid = update.Item2, id = update.Item1 });
-        }
-
-        private void UpdateMacroPropertyGuids()
-        {
-            var database = Database;
-
-            var updates = database.Query<dynamic>(@"SELECT cmsMacroProperty.id id, macroPropertyAlias propertyAlias, cmsMacro.macroAlias macroAlias
-FROM cmsMacroProperty
-JOIN cmsMacro ON cmsMacroProperty.macro=cmsMacro.id")
-                .Select(prop => Tuple.Create((int) prop.id, ("macro____" + (string) prop.macroAlias + "____" + (string) prop.propertyAlias).ToGuid()))
-                .ToList();
-
-            foreach (var update in updates)
-                database.Execute("UPDATE cmsMacroProperty set uniquePropertyId=@guid WHERE id=@id", new { guid = update.Item2, id = update.Item1 });
-        }
-    }
-}
@@ -1,40 +0,0 @@
-using System;
-using System.Linq;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class AddRelationTypeUniqueIdColumn : MigrationBase
-    {
-        public AddRelationTypeUniqueIdColumn(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var columns = SqlSyntax.GetColumnsInSchema(Context.Database).ToArray();
-
-            if (columns.Any(x => x.TableName.InvariantEquals("umbracoRelationType") && x.ColumnName.InvariantEquals("typeUniqueId")) == false)
-            {
-                Create.Column("typeUniqueId").OnTable("umbracoRelationType").AsGuid().Nullable().Do();
-                UpdateRelationTypeGuids();
-                Alter.Table("umbracoRelationType").AlterColumn("typeUniqueId").AsGuid().NotNullable().Do();
-                Create.Index("IX_umbracoRelationType_UniqueId").OnTable("umbracoRelationType").OnColumn("typeUniqueId")
-                    .Ascending()
-                    .WithOptions().NonClustered()
-                    .WithOptions().Unique()
-                    .Do();
-            }
-        }
-
-        private void UpdateRelationTypeGuids()
-        {
-            var database = Database;
-            var updates = database.Query<dynamic>("SELECT id, alias, name FROM umbracoRelationType")
-                .Select(relationType => Tuple.Create((int) relationType.id, ("relationType____" + (string) relationType.alias + "____" + (string) relationType.name).ToGuid()))
-                .ToList();
-
-            foreach (var update in updates)
-                database.Execute("UPDATE umbracoRelationType set typeUniqueId=@guid WHERE id=@id", new { guid = update.Item2, id = update.Item1 });
-        }
-    }
-}
@@ -1,37 +0,0 @@
-using System;
-using System.Linq;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class NormalizeTemplateGuids : MigrationBase
-    {
-        public NormalizeTemplateGuids(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            var database = Database;
-
-            // we need this migration because ppl running pre-7.6 on Cloud and Courier have templates in different
-            // environments having different GUIDs (Courier does not sync template GUIDs) and we need to normalize
-            // these GUIDs so templates with the same alias on different environments have the same GUID.
-            // however, if already running a prerelease version of 7.6, we do NOT want to normalize the GUIDs as quite
-            // probably, we are already running Deploy and the GUIDs are OK. assuming noone is running a prerelease
-            // of 7.6 on Courier.
-            // so... testing if we already have a 7.6.0 version installed. not pretty but...?
-            //
-            var version = database.FirstOrDefault<string>("SELECT version FROM umbracoMigration WHERE name=@name ORDER BY version DESC", new { name = Constants.System.UmbracoUpgradePlanName });
-            if (version != null && version.StartsWith("7.6.0")) return;
-
-            var updates = database.Query<dynamic>(@"SELECT umbracoNode.id, cmsTemplate.alias FROM umbracoNode
-JOIN cmsTemplate ON umbracoNode.id=cmsTemplate.nodeId
-WHERE nodeObjectType = @guid", new { guid = Constants.ObjectTypes.TemplateType })
-                .Select(template => Tuple.Create((int) template.id, ("template____" + (string) template.alias).ToGuid()))
-                .ToList();
-
-            foreach (var update in updates)
-                database.Execute("UPDATE umbracoNode set uniqueId=@guid WHERE id=@id", new { guid = update.Item2, id = update.Item1 });
-        }
-    }
-}
@@ -1,41 +0,0 @@
-using System.Linq;
-using Umbraco.Core.Persistence.SqlSyntax;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    public class ReduceLoginNameColumnsSize : MigrationBase
-    {
-        public ReduceLoginNameColumnsSize(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            //Now we need to check if we can actually d6 this because we won't be able to if there's data in there that is too long
-            //http://issues.umbraco.org/issue/U4-9758
-
-            var database = Database;
-            var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(database);
-
-            var colLen = database.ExecuteScalar<int?>("select max(datalength(LoginName)) from cmsMember");
-
-            if (colLen < 900 == false) return;
-
-            //if an index exists on this table we need to drop it. Normally we'd check via index name but in some odd cases (i.e. Our)
-            //the index name is something odd (starts with "mi_"). In any case, the index cannot exist if we want to alter the column
-            //so we'll drop whatever index is there and add one with the correct name after.
-            var loginNameIndex = dbIndexes.FirstOrDefault(x => x.TableName.InvariantEquals("cmsMember") && x.ColumnName.InvariantEquals("LoginName"));
-            if (loginNameIndex != null)
-            {
-                Delete.Index(loginNameIndex.IndexName).OnTable("cmsMember").Do();
-            }
-
-            //we can apply the col length change
-            Alter.Table("cmsMember")
-                .AlterColumn("LoginName")
-                .AsString(225)
-                .NotNullable()
-                .Do();
-        }
-    }
-}
@@ -1,29 +0,0 @@
-using System.Linq;
-
-namespace Umbraco.Core.Migrations.Upgrade.V_7_6_0
-{
-    /// <summary>
-    /// See: http://issues.umbraco.org/issue/U4-9188
-    /// </summary>
-    public class UpdateUniqueIndexOnPropertyData : MigrationBase
-    {
-        public UpdateUniqueIndexOnPropertyData(IMigrationContext context)
-            : base(context)
-        { }
-
-        public override void Migrate()
-        {
-            //tuple = tablename, indexname, columnname, unique
-            var indexes = SqlSyntax.GetDefinedIndexes(Context.Database).ToArray();
-            var found = indexes.FirstOrDefault(
-                x => x.Item1.InvariantEquals("cmsPropertyData")
-                     && x.Item2.InvariantEquals("IX_cmsPropertyData"));
-
-            if (found != null)
-            {
-                //drop the index
-                Delete.Index("IX_cmsPropertyData").OnTable("cmsPropertyData").Do();
-            }
-        }
-    }
-}
--- a/Show More
+++ b/Show More