Fixes: U4-7120 SQL Fail upgrading om 7.2.4 to 7.3 - due to index on master col

Fixes issue with Umbraco Forms not being able to save

.gitignore

@@ -76,6 +76,7 @@ src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/umbraco.*
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/routes.js
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/app.dev.js
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/loader.js
+src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/loader.dev.js
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/main.js
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/app.js
 

build/NuSpecs/UmbracoCms.Core.nuspec

@@ -33,8 +33,8 @@
       <dependency id="AutoMapper" version="[3.0.0, 3.1.0)" />
       <dependency id="Newtonsoft.Json" version="[6.0.8, 7.0.0)" />
       <dependency id="Examine" version="[0.1.68, 1.0.0)" />
-      <dependency id="ImageProcessor" version="[1.9.5, 3.0.0)" />
-      <dependency id="ImageProcessor.Web" version="[3.3.1, 5.0.0)" />
+      <dependency id="ImageProcessor" version="[2.3.0, 3.0.0)" />
+      <dependency id="ImageProcessor.Web" version="[4.4.0, 5.0.0)" />
       <dependency id="semver" version="[1.1.2, 2.0.0)" />
       <dependency id="Microsoft.AspNet.WebHelpers" version="[3.2.3, 4.0.0)" />
       <dependency id="Microsoft.AspNet.WebPages.Data" version="[3.2.3, 4.0.0)" />

build/NuSpecs/tools/Web.config.install.xdt

@@ -22,10 +22,7 @@
   <appSettings>
     <add key="owin:appStartup" value="UmbracoDefaultOwinStartup" xdt:Locator="Match(key)" xdt:Transform="InsertIfMissing" />
   </appSettings>
-  <appSettings>
-    <add key="owin:appStartup" value="UmbracoDefaultOwinStartup" xdt:Locator="Match(key)" xdt:Transform="SetAttributes" />
-  </appSettings>
-
+  
   <umbracoConfiguration xdt:Transform="InsertIfMissing">
     <settings configSource="config\umbracoSettings.config" xdt:Locator="Match(configSource)" xdt:Transform="InsertIfMissing" />
     <BaseRestExtensions configSource="config\BaseRestExtensions.config" xdt:Locator="Match(configSource)" xdt:Transform="InsertIfMissing" />

build/UmbracoVersion.txt

@@ -1,3 +1,2 @@
 # Usage: on line 2 put the release version, on line 3 put the version comment (example: beta)
-7.3.0
-RC
+7.3.0

src/NuGet.Config

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <add key="nuget.org" value="https://www.nuget.org/api/v2/" />
+    <add key="umbracocore" value="http://www.myget.org/f/umbracocore/" />
+  </packageSources>
+</configuration>

src/SolutionInfo.cs

@@ -12,4 +12,4 @@ using System.Resources;
 [assembly: AssemblyVersion("1.0.*")]
 
 [assembly: AssemblyFileVersion("7.3.0")]
-[assembly: AssemblyInformationalVersion("7.3.0-RC")]
+[assembly: AssemblyInformationalVersion("7.3.0")]

src/Umbraco.Core/ApplicationContext.cs

@@ -2,6 +2,7 @@
 using System.Configuration;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Web;
 using Umbraco.Core.Configuration;
 using Umbraco.Core.Logging;
 using Umbraco.Core.ObjectResolution;
@@ -259,22 +260,13 @@ namespace Umbraco.Core
         {
             get
             {
-                // if initialized, return
-	            if (_umbracoApplicationUrl != null) return _umbracoApplicationUrl;
-
-                // try settings
-                ServerEnvironmentHelper.TrySetApplicationUrlFromSettings(this, ProfilingLogger.Logger, UmbracoConfig.For.UmbracoSettings());
-
-                // and return what we have, may be null
+                ApplicationUrlHelper.EnsureApplicationUrl(this);
                 return _umbracoApplicationUrl;
             }
-	        set
-	        {
-	            _umbracoApplicationUrl = value;
-            }
         }
 
-	    internal string _umbracoApplicationUrl; // internal for tests
+	    // ReSharper disable once InconsistentNaming
+	    internal string _umbracoApplicationUrl;
 
         private Lazy<bool> _configured;
         internal MainDom MainDom { get; private set; }
@@ -379,6 +371,11 @@ namespace Umbraco.Core
 			internal set { _services = value; }
 		}
 
+	    internal ServerRole GetCurrentServerRole()
+	    {
+	        var registrar = ServerRegistrarResolver.Current.Registrar as IServerRegistrar2;
+            return registrar == null ? ServerRole.Unknown : registrar.GetCurrentServerRole();
+	    }
 
         private volatile bool _disposed;
         private readonly ReaderWriterLockSlim _disposalLocker = new ReaderWriterLockSlim();

src/Umbraco.Core/Configuration/UmbracoVersion.cs

@@ -24,7 +24,7 @@ namespace Umbraco.Core.Configuration
         /// Gets the version comment (like beta or RC).
         /// </summary>
         /// <value>The version comment.</value>
-        public static string CurrentComment { get { return "RC"; } }
+        public static string CurrentComment { get { return ""; } }
 
         // Get the version of the umbraco.dll by looking at a class in that dll
         // Had to do it like this due to medium trust issues, see: http://haacked.com/archive/2010/11/04/assembly-location-and-medium-trust.aspx

src/Umbraco.Core/Constants-ObjectTypes.cs

@@ -2,91 +2,96 @@
 
 namespace Umbraco.Core
 {
-	public static partial class Constants
-	{
-		/// <summary>
-		/// Defines the identifiers for Umbraco object types as constants for easy centralized access/management.
-		/// </summary>
-		public static class ObjectTypes
-		{
-			/// <summary>
-			/// Guid for a Content Item object.
-			/// </summary>
-			public const string ContentItem = "10E2B09F-C28B-476D-B77A-AA686435E44A";
+    public static partial class Constants
+    {
+        /// <summary>
+        /// Defines the identifiers for Umbraco object types as constants for easy centralized access/management.
+        /// </summary>
+        public static class ObjectTypes
+        {
+            /// <summary>
+            /// Guid for a Content Item object.
+            /// </summary>
+            public const string ContentItem = "10E2B09F-C28B-476D-B77A-AA686435E44A";
 
-			/// <summary>
-			/// Guid for a Content Item Type object.
-			/// </summary>
-			public const string ContentItemType = "7A333C54-6F43-40A4-86A2-18688DC7E532";
+            /// <summary>
+            /// Guid for a Content Item Type object.
+            /// </summary>
+            public const string ContentItemType = "7A333C54-6F43-40A4-86A2-18688DC7E532";
 
-			/// <summary>
-			/// Guid for the Content Recycle Bin.
-			/// </summary>
-			public const string ContentRecycleBin = "01BB7FF2-24DC-4C0C-95A2-C24EF72BBAC8";
+            /// <summary>
+            /// Guid for the Content Recycle Bin.
+            /// </summary>
+            public const string ContentRecycleBin = "01BB7FF2-24DC-4C0C-95A2-C24EF72BBAC8";
 
-			/// <summary>
-			/// Guid for a DataType object.
-			/// </summary>
-			public const string DataType = "30A2A501-1978-4DDB-A57B-F7EFED43BA3C";
+            /// <summary>
+            /// Guid for a DataType object.
+            /// </summary>
+            public const string DataType = "30A2A501-1978-4DDB-A57B-F7EFED43BA3C";
 
-			/// <summary>
-			/// Guid for a Document object.
-			/// </summary>
-			public const string Document = "C66BA18E-EAF3-4CFF-8A22-41B16D66A972";
+            /// <summary>
+            /// Guid for a Document object.
+            /// </summary>
+            public const string Document = "C66BA18E-EAF3-4CFF-8A22-41B16D66A972";
 
-			/// <summary>
-			/// Guid for a Document Type object.
-			/// </summary>
-			public const string DocumentType = "A2CB7800-F571-4787-9638-BC48539A0EFB";
+            /// <summary>
+            /// Guid for a Document Type object.
+            /// </summary>
+            public const string DocumentType = "A2CB7800-F571-4787-9638-BC48539A0EFB";
 
-			/// <summary>
-			/// Guid for a Media object.
-			/// </summary>
-			public const string Media = "B796F64C-1F99-4FFB-B886-4BF4BC011A9C";
+            /// <summary>
+            /// Guid for a Media object.
+            /// </summary>
+            public const string Media = "B796F64C-1F99-4FFB-B886-4BF4BC011A9C";
 
-			/// <summary>
-			/// Guid for the Media Recycle Bin.
-			/// </summary>
-			public const string MediaRecycleBin = "CF3D8E34-1C1C-41e9-AE56-878B57B32113";
+            /// <summary>
+            /// Guid for the Media Recycle Bin.
+            /// </summary>
+            public const string MediaRecycleBin = "CF3D8E34-1C1C-41e9-AE56-878B57B32113";
 
-			/// <summary>
-			/// Guid for a Media Type object.
-			/// </summary>
-			public const string MediaType = "4EA4382B-2F5A-4C2B-9587-AE9B3CF3602E";
+            /// <summary>
+            /// Guid for a Media Type object.
+            /// </summary>
+            public const string MediaType = "4EA4382B-2F5A-4C2B-9587-AE9B3CF3602E";
 
-			/// <summary>
-			/// Guid for a Member object.
-			/// </summary>
-			public const string Member = "39EB0F98-B348-42A1-8662-E7EB18487560";
+            /// <summary>
+            /// Guid for a Member object.
+            /// </summary>
+            public const string Member = "39EB0F98-B348-42A1-8662-E7EB18487560";
 
-			/// <summary>
-			/// Guid for a Member Group object.
-			/// </summary>
-			public const string MemberGroup = "366E63B9-880F-4E13-A61C-98069B029728";
+            /// <summary>
+            /// Guid for a Member Group object.
+            /// </summary>
+            public const string MemberGroup = "366E63B9-880F-4E13-A61C-98069B029728";
 
-			/// <summary>
-			/// Guid for a Member Type object.
-			/// </summary>
-			public const string MemberType = "9B5416FB-E72F-45A9-A07B-5A9A2709CE43";
+            /// <summary>
+            /// Guid for a Member Type object.
+            /// </summary>
+            public const string MemberType = "9B5416FB-E72F-45A9-A07B-5A9A2709CE43";
 
-			/// <summary>
-			/// Guid for a Stylesheet object.
-			/// </summary>
+            /// <summary>
+            /// Guid for a Stylesheet object.
+            /// </summary>
             [Obsolete("This no longer exists in the database")]
             public const string Stylesheet = "9F68DA4F-A3A8-44C2-8226-DCBD125E4840";
 
             [Obsolete("This no longer exists in the database")]
             internal const string StylesheetProperty = "5555da4f-a123-42b2-4488-dcdfb25e4111";
 
-			/// <summary>
-			/// Guid for the System Root.
-			/// </summary>
-			public const string SystemRoot = "EA7D8624-4CFE-4578-A871-24AA946BF34D";
+            /// <summary>
+            /// Guid for the System Root.
+            /// </summary>
+            public const string SystemRoot = "EA7D8624-4CFE-4578-A871-24AA946BF34D";
 
-			/// <summary>
-			/// Guid for a Template object.
-			/// </summary>
-			public const string Template = "6FBDE604-4178-42CE-A10B-8A2600A2F07D";
-		}
-	}
+            /// <summary>
+            /// Guid for a Template object.
+            /// </summary>
+            public const string Template = "6FBDE604-4178-42CE-A10B-8A2600A2F07D";
+
+            /// <summary>
+            /// Guid for a Lock object.
+            /// </summary>
+            public const string LockObject = "87A9F1FF-B1E4-4A25-BABB-465A4A47EC41";
+        }
+    }
 }

src/Umbraco.Core/Constants-System.cs

@@ -26,6 +26,8 @@
             public const int DefaultMediaListViewDataTypeId = -96;
             public const int DefaultMembersListViewDataTypeId = -97;
 
+            // identifiers for lock objects
+		    public const int ServersLock = -331;
 		}
 	}
 }

src/Umbraco.Core/IO/IOHelper.cs

@@ -152,12 +152,7 @@ namespace Umbraco.Core.IO
         /// <returns>A value indicating whether the filepath is valid.</returns>
         internal static bool VerifyEditPath(string filePath, string validDir)
         {
-            if (filePath.StartsWith(MapPath(SystemDirectories.Root)) == false)
-                filePath = MapPath(filePath);
-            if (validDir.StartsWith(MapPath(SystemDirectories.Root)) == false)
-                validDir = MapPath(validDir);
-
-            return filePath.StartsWith(validDir);
+            return VerifyEditPath(filePath, new[] { validDir });
         }
 
         /// <summary>
@@ -182,15 +177,31 @@ namespace Umbraco.Core.IO
         /// <returns>A value indicating whether the filepath is valid.</returns>
         internal static bool VerifyEditPath(string filePath, IEnumerable<string> validDirs)
         {
+            // this is called from ScriptRepository, PartialViewRepository, etc.
+            // filePath is the fullPath (rooted, filesystem path, can be trusted)
+            // validDirs are virtual paths (eg ~/Views)
+            //
+            // except that for templates, filePath actually is a virtual path
+
+            //TODO
+            // what's below is dirty, there are too many ways to get the root dir, etc.
+            // not going to fix everything today
+
+            var mappedRoot = MapPath(SystemDirectories.Root);
+            if (filePath.StartsWith(mappedRoot) == false)
+                filePath = MapPath(filePath);
+
+            // yes we can (see above)
+            //// don't trust what we get, it may contain relative segments
+            //filePath = Path.GetFullPath(filePath);
+
             foreach (var dir in validDirs)
             {
                 var validDir = dir;
-                if (filePath.StartsWith(MapPath(SystemDirectories.Root)) == false)
-                    filePath = MapPath(filePath);
-                if (validDir.StartsWith(MapPath(SystemDirectories.Root)) == false)
+                if (validDir.StartsWith(mappedRoot) == false)
                     validDir = MapPath(validDir);
 
-                if (filePath.StartsWith(validDir))
+                if (PathStartsWith(filePath, validDir, Path.DirectorySeparatorChar))
                     return true;
             }
 
@@ -219,11 +230,8 @@ namespace Umbraco.Core.IO
         /// <returns>A value indicating whether the filepath is valid.</returns>
         internal static bool VerifyFileExtension(string filePath, List<string> validFileExtensions)
         {
-            if (filePath.StartsWith(MapPath(SystemDirectories.Root)) == false)
-                filePath = MapPath(filePath);
-            var f = new FileInfo(filePath);
-            
-            return validFileExtensions.Contains(f.Extension.Substring(1));
+            var ext = Path.GetExtension(filePath);
+            return ext != null && validFileExtensions.Contains(ext.TrimStart('.'));
         }
 
         /// <summary>
@@ -240,6 +248,16 @@ namespace Umbraco.Core.IO
             return true;
         }
 
+        public static bool PathStartsWith(string path, string root, char separator)
+        {
+            // either it is identical to root,
+            // or it is root + separator + anything
+
+            if (path.StartsWith(root, StringComparison.OrdinalIgnoreCase) == false) return false;
+            if (path.Length == root.Length) return true;
+            if (path.Length < root.Length) return false;
+            return path[root.Length] == separator;
+        }
 
         /// <summary>
         /// Returns the path to the root of the application, by getting the path to where the assembly where this

src/Umbraco.Core/IO/PhysicalFileSystem.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
-using System.Globalization;
-using System.IO; 
+using System.IO;
 using System.Linq;
 using Umbraco.Core.Logging;
 
@@ -9,7 +8,12 @@ namespace Umbraco.Core.IO
 {
     public class PhysicalFileSystem : IFileSystem
     {
-		internal string RootPath { get; private set; }
+        // the rooted, filesystem path, using directory separator chars, NOT ending with a separator
+        // eg "c:" or "c:\path\to\site" or "\\server\path"
+        private readonly string _rootPath;
+
+        // the ??? url, using url separator chars, NOT ending with a separator
+        // eg "" (?) or "/Scripts" or ???
         private readonly string _rootUrl;
 
         public PhysicalFileSystem(string virtualRoot)
@@ -18,8 +22,13 @@ namespace Umbraco.Core.IO
 			if (virtualRoot.StartsWith("~/") == false)
 				throw new ArgumentException("The virtualRoot argument must be a virtual path and start with '~/'");
 
-	        RootPath = IOHelper.MapPath(virtualRoot);
+            _rootPath = IOHelper.MapPath(virtualRoot);
+            _rootPath = EnsureDirectorySeparatorChar(_rootPath);
+            _rootPath = _rootPath.TrimEnd(Path.DirectorySeparatorChar);
+
             _rootUrl = IOHelper.ResolveUrl(virtualRoot);
+            _rootUrl = EnsureUrlSeparatorChar(_rootUrl);
+            _rootUrl = _rootUrl.TrimEnd('/');
         }
 
         public PhysicalFileSystem(string rootPath, string rootUrl)
@@ -33,18 +42,31 @@ namespace Umbraco.Core.IO
 			if (rootPath.StartsWith("~/"))
 				throw new ArgumentException("The rootPath argument cannot be a virtual path and cannot start with '~/'");
 
-            RootPath = rootPath;
-            _rootUrl = rootUrl;
+            // rootPath should be... rooted, as in, it's a root path!
+            // but the test suite App.config cannot really "root" anything so we'll have to do it here
+
+            //var localRoot = AppDomain.CurrentDomain.BaseDirectory;
+            var localRoot = IOHelper.GetRootDirectorySafe();
+            if (Path.IsPathRooted(rootPath) == false)
+            {
+                rootPath = Path.Combine(localRoot, rootPath);
+            }
+
+            rootPath = EnsureDirectorySeparatorChar(rootPath);
+            rootUrl = EnsureUrlSeparatorChar(rootUrl);
+
+            _rootPath = rootPath.TrimEnd(Path.DirectorySeparatorChar);
+            _rootUrl = rootUrl.TrimEnd('/');
         }
 
         public IEnumerable<string> GetDirectories(string path)
         {
-            path = EnsureTrailingSeparator(GetFullPath(path));
+            var fullPath = GetFullPath(path);
 
             try
             {
-                if (Directory.Exists(path))
-                    return Directory.EnumerateDirectories(path).Select(GetRelativePath);
+                if (Directory.Exists(fullPath))
+                    return Directory.EnumerateDirectories(fullPath).Select(GetRelativePath);
             }
             catch (UnauthorizedAccessException ex)
             {
@@ -65,12 +87,13 @@ namespace Umbraco.Core.IO
 
         public void DeleteDirectory(string path, bool recursive)
         {
-            if (DirectoryExists(path) == false)
+            var fullPath = GetFullPath(path);
+            if (Directory.Exists(fullPath) == false)
                 return;
 
             try
             {
-                Directory.Delete(GetFullPath(path), recursive);
+                Directory.Delete(fullPath, recursive);
             }
             catch (DirectoryNotFoundException ex)
             {
@@ -80,7 +103,8 @@ namespace Umbraco.Core.IO
 
         public bool DirectoryExists(string path)
         {
-            return Directory.Exists(GetFullPath(path));
+            var fullPath = GetFullPath(path);
+            return Directory.Exists(fullPath);
         }
 
         public void AddFile(string path, Stream stream)
@@ -90,17 +114,17 @@ namespace Umbraco.Core.IO
 
         public void AddFile(string path, Stream stream, bool overrideIfExists)
         {
-            var fsRelativePath = GetRelativePath(path);
+            var fullPath = GetFullPath(path);
+            var exists = File.Exists(fullPath);
+            if (exists && overrideIfExists == false) 
+                throw new InvalidOperationException(string.Format("A file at path '{0}' already exists", path));
 
-            var exists = FileExists(fsRelativePath);
-            if (exists && overrideIfExists == false) throw new InvalidOperationException(string.Format("A file at path '{0}' already exists", path));
-
-            EnsureDirectory(Path.GetDirectoryName(fsRelativePath));
+            Directory.CreateDirectory(Path.GetDirectoryName(fullPath)); // ensure it exists
 
             if (stream.CanSeek)
                 stream.Seek(0, 0);
 
-            using (var destination = (Stream)File.Create(GetFullPath(fsRelativePath)))
+            using (var destination = (Stream)File.Create(fullPath))
                 stream.CopyTo(destination);
         }
 
@@ -111,9 +135,7 @@ namespace Umbraco.Core.IO
 
         public IEnumerable<string> GetFiles(string path, string filter)
         {
-            var fsRelativePath = GetRelativePath(path);
-
-            var fullPath = EnsureTrailingSeparator(GetFullPath(fsRelativePath));
+            var fullPath = GetFullPath(path);
 
             try
             {
@@ -140,12 +162,13 @@ namespace Umbraco.Core.IO
 
         public void DeleteFile(string path)
         {
-            if (!FileExists(path))
+            var fullPath = GetFullPath(path);
+            if (File.Exists(fullPath) == false)
                 return;
 
             try
             {
-                File.Delete(GetFullPath(path));
+                File.Delete(fullPath);
             }
             catch (FileNotFoundException ex)
             {
@@ -155,39 +178,86 @@ namespace Umbraco.Core.IO
 
         public bool FileExists(string path)
         {
-            return File.Exists(GetFullPath(path));
+            var fullpath = GetFullPath(path);
+            return File.Exists(fullpath);
         }
 
+        // beware, many things depend on how the GetRelative/AbsolutePath methods work!
+
+        /// <summary>
+        /// Gets the relative path.
+        /// </summary>
+        /// <param name="fullPathOrUrl">The full path or url.</param>
+        /// <returns>The path, relative to this filesystem's root.</returns>
+        /// <remarks>
+        /// <para>The relative path is relative to this filesystem's root, not starting with any
+        /// directory separator. If input was recognized as a url (path), then output uses url (path) separator
+        /// chars.</para>
+        /// </remarks>
         public string GetRelativePath(string fullPathOrUrl)
         {
-            var relativePath = fullPathOrUrl
-                .TrimStart(_rootUrl)
-                .Replace('/', Path.DirectorySeparatorChar)
-                .TrimStart(RootPath)
-                .TrimStart(Path.DirectorySeparatorChar);
+            // test url
+            var path = fullPathOrUrl.Replace('\\', '/'); // ensure url separator char
 
-            return relativePath;
+            if (IOHelper.PathStartsWith(path, _rootUrl, '/')) // if it starts with the root url...
+                return path.Substring(_rootUrl.Length) // strip it
+                            .TrimStart('/'); // it's relative
+
+            // test path
+            path = EnsureDirectorySeparatorChar(fullPathOrUrl);
+
+            if (IOHelper.PathStartsWith(path, _rootPath, Path.DirectorySeparatorChar)) // if it starts with the root path
+                return path.Substring(_rootPath.Length) // strip it
+                            .TrimStart(Path.DirectorySeparatorChar); // it's relative
+
+            // unchanged - including separators
+            return fullPathOrUrl;
         }
 
+        /// <summary>
+        /// Gets the full path.
+        /// </summary>
+        /// <param name="path">The full or relative path.</param>
+        /// <returns>The full path.</returns>
+        /// <remarks>
+        /// <para>On the physical filesystem, the full path is the rooted (ie non-relative), safe (ie within this
+        /// filesystem's root) path. All separators are converted to Path.DirectorySeparatorChar.</para>
+        /// </remarks>
         public string GetFullPath(string path)
         {
-            //if the path starts with a '/' then it's most likely not a FS relative path which is required so convert it
-            if (path.StartsWith("/"))
-            {
-                path = GetRelativePath(path);
-            }
+            // normalize
+            var opath = path;
+            path = EnsureDirectorySeparatorChar(path);
 
-            return !path.StartsWith(RootPath) 
-                ? Path.Combine(RootPath, path)
-                : path;
+            // not sure what we are doing here - so if input starts with a (back) slash,
+            // we assume it's not a FS relative path and we try to convert it... but it
+            // really makes little sense?
+            if (path.StartsWith(Path.DirectorySeparatorChar.ToString()))
+                path = GetRelativePath(path);
+
+            // if already a full path, return
+            if (IOHelper.PathStartsWith(path, _rootPath, Path.DirectorySeparatorChar))
+                return path;
+
+            // else combine and sanitize, ie GetFullPath will take care of any relative
+            // segments in path, eg '../../foo.tmp' - it may throw a SecurityException
+            // if the combined path reaches illegal parts of the filesystem
+            var fpath = Path.Combine(_rootPath, path);
+            fpath = Path.GetFullPath(fpath);
+
+            // at that point, path is within legal parts of the filesystem, ie we have
+            // permissions to reach that path, but it may nevertheless be outside of
+            // our root path, due to relative segments, so better check
+            if (IOHelper.PathStartsWith(fpath, _rootPath, Path.DirectorySeparatorChar))
+                return fpath;
+
+            throw new FileSecurityException("File '" + opath + "' is outside this filesystem's root.");
         }
 
         public string GetUrl(string path)
         {
-            return _rootUrl.TrimEnd("/") + "/" + path
-                .TrimStart(Path.DirectorySeparatorChar)
-                .Replace(Path.DirectorySeparatorChar, '/')
-                .TrimEnd("/");
+            path = EnsureUrlSeparatorChar(path).Trim('/');
+            return _rootUrl + "/" + path;
         }
 
         public DateTimeOffset GetLastModified(string path)
@@ -214,9 +284,19 @@ namespace Umbraco.Core.IO
 
         protected string EnsureTrailingSeparator(string path)
         {
-            if (!path.EndsWith(Path.DirectorySeparatorChar.ToString(CultureInfo.InvariantCulture), StringComparison.Ordinal))
-                path = path + Path.DirectorySeparatorChar;
+            return path.EnsureEndsWith(Path.DirectorySeparatorChar);
+        }
 
+        protected string EnsureDirectorySeparatorChar(string path)
+        {
+            path = path.Replace('/', Path.DirectorySeparatorChar);
+            path = path.Replace('\\', Path.DirectorySeparatorChar);
+            return path;
+        }
+
+        protected string EnsureUrlSeparatorChar(string path)
+        {
+            path = path.Replace('\\', '/');
             return path;
         }
 

src/Umbraco.Core/Models/File.cs

@@ -2,6 +2,8 @@
 using System.IO;
 using System.Reflection;
 using System.Runtime.Serialization;
+using System.Text;
+using Umbraco.Core.IO;
 using Umbraco.Core.Models.EntityBase;
 
 namespace Umbraco.Core.Models
@@ -15,12 +17,20 @@ namespace Umbraco.Core.Models
     {
         private string _path;
         private string _originalPath;
-        private string _content = string.Empty; //initialize to empty string, not null
 
-        protected File(string path)
+        // initialize to string.Empty so that it is possible to save a new file,
+        // should use the lazyContent ctor to set it to null when loading existing.
+        // cannot simply use HasIdentity as some classes (eg Script) override it
+        // in a weird way.
+        private string _content;
+        internal Func<File, string> GetFileContent { get; set; }
+
+        protected File(string path, Func<File, string> getFileContent = null)
         {
-            _path = path;
+            _path = SanitizePath(path);
             _originalPath = _path;
+            GetFileContent = getFileContent;
+            _content = getFileContent != null ? null : string.Empty;
         }
 
         private static readonly PropertyInfo ContentSelector = ExpressionHelper.GetPropertyInfo<File, string>(x => x.Content);
@@ -28,6 +38,14 @@ namespace Umbraco.Core.Models
         private string _alias;
         private string _name;
 
+        private static string SanitizePath(string path)
+        {
+            return path
+                .Replace('\\', System.IO.Path.DirectorySeparatorChar)
+                .Replace('/', System.IO.Path.DirectorySeparatorChar);
+                //.TrimStart(System.IO.Path.DirectorySeparatorChar);
+        }
+
         /// <summary>
         /// Gets or sets the Name of the File including extension
         /// </summary>
@@ -71,7 +89,7 @@ namespace Umbraco.Core.Models
 
                 SetPropertyValueAndDetectChanges(o =>
                 {
-                    _path = value;
+                    _path = SanitizePath(value);
                     return _path;
                 }, _path, PathSelector);
             }
@@ -96,15 +114,26 @@ namespace Umbraco.Core.Models
         /// <summary>
         /// Gets or sets the Content of a File
         /// </summary>
+        /// <remarks>Marked as DoNotClone, because it should be lazy-reloaded from disk.</remarks>
         [DataMember]
+        [DoNotClone]
         public virtual string Content
         {
-            get { return _content; }
+            get
+            {
+                if (_content != null)
+                    return _content;
+
+                // else, must lazy-load, and ensure it's not null
+                if (GetFileContent != null)
+                    _content = GetFileContent(this);
+                return _content ?? (_content = string.Empty);
+            }
             set
             {
                 SetPropertyValueAndDetectChanges(o =>
                 {
-                    _content = value;
+                    _content = value ?? string.Empty; // cannot set to null
                     return _content;
                 }, _content, ContentSelector);
             }
@@ -121,17 +150,32 @@ namespace Umbraco.Core.Models
             return true;
         }
 
+        // this exists so that class that manage name and alias differently, eg Template,
+        // can implement their own cloning - (though really, not sure it's even needed)
+        protected virtual void DeepCloneNameAndAlias(File clone)
+        {
+            // set fields that have a lazy value, by forcing evaluation of the lazy
+            clone._name = Name;
+            clone._alias = Alias;
+        }
+
         public override object DeepClone()
         {
-            var clone = (File)base.DeepClone();
-            //turn off change tracking
+            var clone = (File) base.DeepClone();
+
+            // clear fields that were memberwise-cloned and that we don't want to clone
+            clone._content = null;
+
+            // turn off change tracking
             clone.DisableChangeTracking();
-            //need to manually assign since they are readonly properties
-            clone._alias = Alias;
-            clone._name = Name;
-            //this shouldn't really be needed since we're not tracking
+
+            // ...
+            DeepCloneNameAndAlias(clone);
+
+            // this shouldn't really be needed since we're not tracking
             clone.ResetDirtyProperties(false);
-            //re-enable tracking
+
+            // re-enable tracking
             clone.EnableChangeTracking();
 
             return clone;

src/Umbraco.Core/Models/IPublishedContentWithKey.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace Umbraco.Core.Models
+{
+    /// <summary>
+    /// Represents a cached content with a GUID key.
+    /// </summary>
+    /// <remarks>This is temporary, because we cannot add the Key property to IPublishedContent without
+    /// breaking backward compatibility. With v8, it will be merged into IPublishedContent.</remarks>
+    public interface IPublishedContentWithKey : IPublishedContent
+    {
+        Guid Key { get; }
+    }
+}

src/Umbraco.Core/Models/IServerRegistration.cs

@@ -18,6 +18,11 @@ namespace Umbraco.Core.Models
         /// </summary>
         bool IsActive { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether the server is master.
+        /// </summary>
+        bool IsMaster { get; set; }
+
         /// <summary>
         /// Gets the date and time the registration was created.
         /// </summary>

src/Umbraco.Core/Models/PartialView.cs

@@ -1,9 +1,6 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Runtime.Serialization;
-using System.Text.RegularExpressions;
-using Umbraco.Core.IO;
+using Umbraco.Core.Services;
 
 namespace Umbraco.Core.Models
 {
@@ -15,12 +12,14 @@ namespace Umbraco.Core.Models
     [DataContract(IsReference = true)]
     public class PartialView : File, IPartialView
     {
-
         public PartialView(string path)
-            : base(path)
-        {
-            base.Path = path;
-        }
+            : this(path, null)
+        { }
 
+        internal PartialView(string path, Func<File, string> getFileContent)
+            : base(path, getFileContent)
+        { }
+
+        internal PartialViewType ViewType { get; set; }
     }
 }

src/Umbraco.Core/Models/PartialViewType.cs

@@ -0,0 +1,9 @@
+namespace Umbraco.Core.Models
+{
+    internal enum PartialViewType : byte
+    {
+        Unknown = 0, // default
+        PartialView = 1,
+        PartialViewMacro = 2
+    }
+}

src/Umbraco.Core/Models/PublishedContent/PublishedContentExtended.cs

@@ -62,9 +62,20 @@ namespace Umbraco.Core.Models.PublishedContent
             // model and therefore returned the original content unchanged.
 
             var model = content.CreateModel();
-            var extended = model == content // == means the factory did not create a model
-              ? new PublishedContentExtended(content) // so we have to extend
-              : model; // else we can use what the factory returned
+            IPublishedContent extended;
+            if (model == content) // == means the factory did not create a model
+            {
+                // so we have to extend
+                var contentWithKey = content as IPublishedContentWithKey;
+                extended = contentWithKey == null
+                    ? new PublishedContentExtended(content)
+                    : new PublishedContentWithKeyExtended(contentWithKey);
+            }
+            else
+            {
+                // else we can use what the factory returned
+                extended = model;
+            }
 
             // so extended should always implement IPublishedContentExtended, however if
             // by mistake the factory returned a different object that does not implement

src/Umbraco.Core/Models/PublishedContent/PublishedContentWithKeyExtended.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace Umbraco.Core.Models.PublishedContent
+{
+    public class PublishedContentWithKeyExtended : PublishedContentExtended, IPublishedContentWithKey
+    {
+        // protected for models, internal for PublishedContentExtended static Extend method
+        protected internal PublishedContentWithKeyExtended(IPublishedContentWithKey content)
+            : base(content)
+        { }
+
+        public Guid Key { get { return ((IPublishedContentWithKey) Content).Key; } }
+    }
+}

src/Umbraco.Core/Models/PublishedContent/PublishedContentWithKeyModel.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace Umbraco.Core.Models.PublishedContent
+{
+    public abstract class PublishedContentWithKeyModel : PublishedContentModel, IPublishedContentWithKey
+    {
+        protected PublishedContentWithKeyModel(IPublishedContentWithKey content)
+            : base (content)
+        { }
+
+        public Guid Key { get { return ((IPublishedContentWithKey) Content).Key; } }
+    }
+}

src/Umbraco.Core/Models/PublishedContent/PublishedContentWithKeyWrapped.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace Umbraco.Core.Models.PublishedContent
+{
+    /// <summary>
+    /// Provides an abstract base class for <c>IPublishedContentWithKey</c> implementations that
+    /// wrap and extend another <c>IPublishedContentWithKey</c>.
+    /// </summary>
+    public class PublishedContentWithKeyWrapped : PublishedContentWrapped, IPublishedContentWithKey
+    {
+        protected PublishedContentWithKeyWrapped(IPublishedContentWithKey content)
+            : base(content)
+        { }
+
+        public virtual Guid Key { get { return ((IPublishedContentWithKey) Content).Key; } }
+    }
+}

src/Umbraco.Core/Models/Rdbms/AccessDto.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Security.AccessControl;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -30,11 +31,11 @@ namespace Umbraco.Core.Models.Rdbms
         public int NoAccessNodeId { get; set; }
 
         [Column("createDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime CreateDate { get; set; }
 
         [Column("updateDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime UpdateDate { get; set; }
 
         [ResultColumn]

src/Umbraco.Core/Models/Rdbms/AccessRuleDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -25,11 +26,11 @@ namespace Umbraco.Core.Models.Rdbms
         public string RuleType { get; set; }
 
         [Column("createDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime CreateDate { get; set; }
 
         [Column("updateDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime UpdateDate { get; set; }
     }
 }

src/Umbraco.Core/Models/Rdbms/ContentVersionDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -23,7 +24,7 @@ namespace Umbraco.Core.Models.Rdbms
         public Guid VersionId { get; set; }
 
         [Column("VersionDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime VersionDate { get; set; }
 
         [ResultColumn]

src/Umbraco.Core/Models/Rdbms/DocumentDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -38,7 +39,7 @@ namespace Umbraco.Core.Models.Rdbms
         public DateTime? ExpiresDate { get; set; }
 
         [Column("updateDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime UpdateDate { get; set; }
 
         [Column("templateId")]

src/Umbraco.Core/Models/Rdbms/ExternalLoginDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -27,7 +28,7 @@ namespace Umbraco.Core.Models.Rdbms
         public string ProviderKey { get; set; }
 
         [Column("createDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime CreateDate { get; set; }
 
 

src/Umbraco.Core/Models/Rdbms/LogDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -21,7 +22,7 @@ namespace Umbraco.Core.Models.Rdbms
         public int NodeId { get; set; }
 
         [Column("Datestamp")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime Datestamp { get; set; }
 
         [Column("logHeader")]

src/Umbraco.Core/Models/Rdbms/MigrationDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -19,7 +20,7 @@ namespace Umbraco.Core.Models.Rdbms
         public string Name { get; set; }
 
         [Column("createDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime CreateDate { get; set; }
 
         [Column("version")]

src/Umbraco.Core/Models/Rdbms/NodeDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -48,7 +49,7 @@ namespace Umbraco.Core.Models.Rdbms
         [Column("uniqueID")]
         [NullSetting(NullSetting = NullSettings.NotNull)]
         [Index(IndexTypes.UniqueNonClustered, Name = "IX_umbracoNodeUniqueID")]
-        [Constraint(Default = "newid()")]
+        [Constraint(Default = SystemMethods.NewGuid)]
         public Guid UniqueId { get; set; }
 
         [Column("text")]
@@ -61,7 +62,7 @@ namespace Umbraco.Core.Models.Rdbms
         public Guid? NodeObjectType { get; set; }
 
         [Column("createDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime CreateDate { get; set; }
     }
 }

src/Umbraco.Core/Models/Rdbms/PropertyTypeDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -61,7 +62,7 @@ namespace Umbraco.Core.Models.Rdbms
 
         [Column("UniqueID")]
         [NullSetting(NullSetting = NullSettings.NotNull)]
-        [Constraint(Default = "newid()")]
+        [Constraint(Default = SystemMethods.NewGuid)]
         [Index(IndexTypes.UniqueNonClustered, Name = "IX_cmsPropertyTypeUniqueID")]
         public Guid UniqueId { get; set; }
     }

src/Umbraco.Core/Models/Rdbms/RelationDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -26,7 +27,7 @@ namespace Umbraco.Core.Models.Rdbms
         public int RelationType { get; set; }
 
         [Column("datetime")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime Datetime { get; set; }
 
         [Column("comment")]

src/Umbraco.Core/Models/Rdbms/ServerRegistrationDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -23,7 +24,7 @@ namespace Umbraco.Core.Models.Rdbms
         public string ServerIdentity { get; set; }
 
         [Column("registeredDate")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime DateRegistered { get; set; }
 
         [Column("lastNotifiedDate")]
@@ -33,6 +34,7 @@ namespace Umbraco.Core.Models.Rdbms
         [Index(IndexTypes.NonClustered)]
         public bool IsActive { get; set; }
 
-
+        [Column("isMaster")]
+        public bool IsMaster { get; set; }
     }
 }

src/Umbraco.Core/Models/Rdbms/TaskDto.cs

@@ -1,6 +1,7 @@
 using System;
 using Umbraco.Core.Persistence;
 using Umbraco.Core.Persistence.DatabaseAnnotations;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 
 namespace Umbraco.Core.Models.Rdbms
 {
@@ -34,7 +35,7 @@ namespace Umbraco.Core.Models.Rdbms
         public int UserId { get; set; }
 
         [Column("DateTime")]
-        [Constraint(Default = "getdate()")]
+        [Constraint(Default = SystemMethods.CurrentDateTime)]
         public DateTime DateTime { get; set; }
 
         [Column("Comment")]

src/Umbraco.Core/Models/Script.cs

@@ -1,7 +1,5 @@
 using System;
-using System.Linq;
 using System.Runtime.Serialization;
-using Umbraco.Core.Configuration;
 using Umbraco.Core.Configuration.UmbracoSettings;
 using Umbraco.Core.IO;
 
@@ -15,16 +13,17 @@ namespace Umbraco.Core.Models
     public class Script : File
     {
         public Script(string path)
-            : base(path)
-        {
-            
-        }
+            : this(path, (Func<File, string>) null)
+        { }
+
+        internal Script(string path, Func<File, string> getFileContent)
+            : base(path, getFileContent)
+        { }
 
         [Obsolete("This is no longer used and will be removed from the codebase in future versions")]
         public Script(string path, IContentSection contentConfig)
-            : this(path)
-        {           
-        }
+            : base(path)
+        { }
 
         /// <summary>
         /// Indicates whether the current entity has an identity, which in this case is a path/name.

src/Umbraco.Core/Models/ServerRegistration.cs

@@ -2,7 +2,6 @@
 using System.Globalization;
 using System.Reflection;
 using Umbraco.Core.Models.EntityBase;
-using Umbraco.Core.Sync;
 
 namespace Umbraco.Core.Models
 {
@@ -14,10 +13,12 @@ namespace Umbraco.Core.Models
         private string _serverAddress;
         private string _serverIdentity;
         private bool _isActive;
+        private bool _isMaster;
 
         private static readonly PropertyInfo ServerAddressSelector = ExpressionHelper.GetPropertyInfo<ServerRegistration, string>(x => x.ServerAddress);
         private static readonly PropertyInfo ServerIdentitySelector = ExpressionHelper.GetPropertyInfo<ServerRegistration, string>(x => x.ServerIdentity);
         private static readonly PropertyInfo IsActiveSelector = ExpressionHelper.GetPropertyInfo<ServerRegistration, bool>(x => x.IsActive);
+        private static readonly PropertyInfo IsMasterSelector = ExpressionHelper.GetPropertyInfo<ServerRegistration, bool>(x => x.IsMaster);
 
         /// <summary>
         /// Initialiazes a new instance of the <see cref="ServerRegistration"/> class.
@@ -34,7 +35,8 @@ namespace Umbraco.Core.Models
         /// <param name="registered">The date and time the registration was created.</param>
         /// <param name="accessed">The date and time the registration was last accessed.</param>
         /// <param name="isActive">A value indicating whether the registration is active.</param>
-        public ServerRegistration(int id, string serverAddress, string serverIdentity, DateTime registered, DateTime accessed, bool isActive)
+        /// <param name="isMaster">A value indicating whether the registration is master.</param>
+        public ServerRegistration(int id, string serverAddress, string serverIdentity, DateTime registered, DateTime accessed, bool isActive, bool isMaster)
         {
             UpdateDate = accessed;
             CreateDate = registered;
@@ -43,6 +45,7 @@ namespace Umbraco.Core.Models
             ServerAddress = serverAddress;
             ServerIdentity = serverIdentity;
             IsActive = isActive;
+            IsMaster = isMaster;
         }
 
         /// <summary>
@@ -108,6 +111,22 @@ namespace Umbraco.Core.Models
             }
         }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether the server is master.
+        /// </summary>
+        public bool IsMaster
+        {
+            get { return _isMaster; }
+            set
+            {
+                SetPropertyValueAndDetectChanges(o =>
+                {
+                    _isMaster = value;
+                    return _isMaster;
+                }, _isMaster, IsMasterSelector);
+            }
+        }
+
         /// <summary>
         /// Gets the date and time the registration was created.
         /// </summary>
@@ -124,7 +143,7 @@ namespace Umbraco.Core.Models
         /// <returns></returns>
         public override string ToString()
         {
-            return string.Format("{{\"{0}\", \"{1}\", {2}active}}", ServerAddress, ServerIdentity, IsActive ? "" : "!");
+            return string.Format("{{\"{0}\", \"{1}\", {2}active, {3}master}}", ServerAddress, ServerIdentity, IsActive ? "" : "!", IsMaster ? "" : "!");
         }
     }
 }

src/Umbraco.Core/Models/Stylesheet.cs

@@ -1,9 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Data;
 using System.Linq;
 using System.Runtime.Serialization;
-using System.Text;
 using Umbraco.Core.IO;
 using Umbraco.Core.Strings.Css;
 
@@ -16,12 +16,16 @@ namespace Umbraco.Core.Models
     [DataContract(IsReference = true)]
     public class Stylesheet : File
     {
-        public Stylesheet(string path) 
-            : base(path.EnsureEndsWith(".css"))
-        {          
+        public Stylesheet(string path)
+            : this(path, null)
+        { }
+
+        internal Stylesheet(string path, Func<File, string> getFileContent)
+            : base(path.EnsureEndsWith(".css"), getFileContent)
+        {
             InitializeProperties();
         }
-      
+
         private Lazy<List<StylesheetProperty>> _properties;
 
         private void InitializeProperties()
@@ -81,7 +85,7 @@ namespace Umbraco.Core.Models
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
-        void Property_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
+        void Property_PropertyChanged(object sender, PropertyChangedEventArgs e)
         {
             var prop = (StylesheetProperty) sender;
 

src/Umbraco.Core/Models/Template.cs

@@ -1,7 +1,10 @@
 using System;
 using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
 using System.Reflection;
 using System.Runtime.Serialization;
+using System.Text;
 using Umbraco.Core.Configuration;
 using Umbraco.Core.Configuration.UmbracoSettings;
 using Umbraco.Core.IO;
@@ -29,12 +32,16 @@ namespace Umbraco.Core.Models
         private static readonly PropertyInfo NameSelector = ExpressionHelper.GetPropertyInfo<Template, string>(x => x.Name);
 
         public Template(string name, string alias)
-            : base(string.Empty)
+            : this(name, alias, (Func<File, string>) null)
+        { }
+
+        internal Template(string name, string alias, Func<File, string> getFileContent)
+            : base(string.Empty, getFileContent)
         {
             _name = name;
             _alias = alias.ToCleanString(CleanStringType.UnderscoreAlias);
             _masterTemplateId = new Lazy<int>(() => -1);
-        }        
+        }
 
         [Obsolete("This constructor should not be used, file path is determined by alias, setting the path here will have no affect")]
         public Template(string path, string name, string alias)
@@ -123,7 +130,6 @@ namespace Umbraco.Core.Models
                 Key = Guid.NewGuid();
         }
 
-
         public void SetMasterTemplate(ITemplate masterTemplate)
         {
             if (masterTemplate == null)
@@ -139,27 +145,9 @@ namespace Umbraco.Core.Models
            
         }
 
-        public override object DeepClone()
+        protected override void DeepCloneNameAndAlias(File clone)
         {
-        
-            //We cannot call in to the base classes to clone because the base File class treats Alias, Name.. differently so we need to manually do the clone
-
-            //Memberwise clone on Entity will work since it doesn't have any deep elements
-            // for any sub class this will work for standard properties as well that aren't complex object's themselves.
-            var clone = (Template)MemberwiseClone();
-            //turn off change tracking
-            clone.DisableChangeTracking();
-            //Automatically deep clone ref properties that are IDeepCloneable
-            DeepCloneHelper.DeepCloneRefProperties(this, clone);
-
-            //this shouldn't really be needed since we're not tracking
-            clone.ResetDirtyProperties(false);
-            //re-enable tracking
-            clone.EnableChangeTracking();
-
-            return clone;
+            // do nothing - prevents File from doing its stuff
         }
-
-        
     }
 }

src/Umbraco.Core/Persistence/DatabaseAnnotations/ConstraintAttribute.cs

@@ -20,6 +20,6 @@ namespace Umbraco.Core.Persistence.DatabaseAnnotations
         /// <summary>
         /// Gets or sets the Default value
         /// </summary>
-        public string Default { get; set; }
+        public object Default { get; set; }
     }
 }

src/Umbraco.Core/Persistence/DatabaseModelDefinitions/SystemMethods.cs

@@ -3,8 +3,8 @@ namespace Umbraco.Core.Persistence.DatabaseModelDefinitions
     public enum SystemMethods
     {
         NewGuid,
-        NewSequentialId,
         CurrentDateTime,
-        CurrentUTCDateTime
+        //NewSequentialId,
+        //CurrentUTCDateTime
     }
 }

src/Umbraco.Core/Persistence/DatabaseSchemaHelper.cs

@@ -80,9 +80,6 @@ namespace Umbraco.Core.Persistence
             var creation = new DatabaseSchemaCreation(_db, _logger, _syntaxProvider);
             creation.InitializeDatabaseSchema();
 
-            //Now ensure to cretae the tag in the db for the current migration version
-            migrationEntryService.CreateEntry(GlobalSettings.UmbracoMigrationName, UmbracoVersion.GetSemanticVersion());
-
             _logger.Info<Database>("Finalized database schema creation");
         }
 

src/Umbraco.Core/Persistence/DatabasenodeLockExtensions.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Runtime.CompilerServices;
+
+namespace Umbraco.Core.Persistence
+{
+    internal static class DatabaseNodeLockExtensions
+    {
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static void ValidateDatabase(UmbracoDatabase database)
+        {
+            if (database == null)
+                throw new ArgumentNullException("database");
+            if (database.CurrentTransactionIsolationLevel < IsolationLevel.RepeatableRead)
+                throw new InvalidOperationException("A transaction with minimum RepeatableRead isolation level is required.");
+        }
+
+        // updating a record within a repeatable-read transaction gets an exclusive lock on
+        // that record which will be kept until the transaction is ended, effectively locking
+        // out all other accesses to that record - thus obtaining an exclusive lock over the
+        // protected resources.
+        public static void AcquireLockNodeWriteLock(this UmbracoDatabase database, int nodeId)
+        {
+            ValidateDatabase(database);
+
+            database.Execute("UPDATE umbracoNode SET sortOrder = (CASE WHEN (sortOrder=1) THEN -1 ELSE 1 END) WHERE id=@id",
+                new { @id = nodeId });
+        }
+
+        // reading a record within a repeatable-read transaction gets a shared lock on
+        // that record which will be kept until the transaction is ended, effectively preventing
+        // other write accesses to that record - thus obtaining a shared lock over the protected
+        // resources.
+        public static void AcquireLockNodeReadLock(this UmbracoDatabase database, int nodeId)
+        {
+            ValidateDatabase(database);
+
+            database.ExecuteScalar<int>("SELECT sortOrder FROM umbracoNode WHERE id=@id",
+                new { @id = nodeId });
+        }
+    }
+}

src/Umbraco.Core/Persistence/Factories/ServerRegistrationFactory.cs

@@ -7,7 +7,7 @@ namespace Umbraco.Core.Persistence.Factories
     {
         public ServerRegistration BuildEntity(ServerRegistrationDto dto)
         {
-            var model = new ServerRegistration(dto.Id, dto.ServerAddress, dto.ServerIdentity, dto.DateRegistered, dto.DateAccessed, dto.IsActive);
+            var model = new ServerRegistration(dto.Id, dto.ServerAddress, dto.ServerIdentity, dto.DateRegistered, dto.DateAccessed, dto.IsActive, dto.IsMaster);
             //on initial construction we don't want to have dirty properties tracked
             // http://issues.umbraco.org/issue/U4-1946
             model.ResetDirtyProperties(false);
@@ -21,6 +21,7 @@ namespace Umbraco.Core.Persistence.Factories
                 ServerAddress = entity.ServerAddress,
                 DateRegistered = entity.CreateDate,
                 IsActive = entity.IsActive,
+                IsMaster = ((ServerRegistration) entity).IsMaster,
                 DateAccessed = entity.UpdateDate,
                 ServerIdentity = entity.ServerIdentity
             };

src/Umbraco.Core/Persistence/Factories/TemplateFactory.cs

@@ -33,9 +33,9 @@ namespace Umbraco.Core.Persistence.Factories
 
         #region Implementation of IEntityFactory<ITemplate,TemplateDto>
 
-        public Template BuildEntity(TemplateDto dto, IEnumerable<IUmbracoEntity> childDefinitions)
+        public Template BuildEntity(TemplateDto dto, IEnumerable<IUmbracoEntity> childDefinitions, Func<File, string> getFileContent)
         {
-            var template = new Template(dto.NodeDto.Text, dto.Alias)
+            var template = new Template(dto.NodeDto.Text, dto.Alias, getFileContent)
                                {
                                    CreateDate = dto.NodeDto.CreateDate,
                                    Id = dto.NodeId,

src/Umbraco.Core/Persistence/LockedRepository.cs

@@ -0,0 +1,27 @@
+using System;
+using Umbraco.Core.Persistence.Repositories;
+using Umbraco.Core.Persistence.UnitOfWork;
+
+namespace Umbraco.Core.Persistence
+{
+    internal class LockedRepository<TRepository>
+        where TRepository : IDisposable, IRepository
+    {
+        public LockedRepository(Transaction transaction, IDatabaseUnitOfWork unitOfWork, TRepository repository)
+        {
+            Transaction = transaction;
+            UnitOfWork = unitOfWork;
+            Repository = repository;
+        }
+
+        public Transaction Transaction { get; private set; }
+        public IDatabaseUnitOfWork UnitOfWork { get; private set; }
+        public TRepository Repository { get; private set; }
+
+        public void Commit()
+        {
+            UnitOfWork.Commit();
+            Transaction.Complete();
+        }
+    }
+}

src/Umbraco.Core/Persistence/LockingRepository.cs

@@ -0,0 +1,103 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using Umbraco.Core.Persistence.Repositories;
+using Umbraco.Core.Persistence.UnitOfWork;
+
+namespace Umbraco.Core.Persistence
+{
+    internal class LockingRepository<TRepository>
+        where TRepository : IDisposable, IRepository
+    {
+        private readonly IDatabaseUnitOfWorkProvider _uowProvider;
+        private readonly Func<IDatabaseUnitOfWork, TRepository> _repositoryFactory;
+        private readonly int[] _readLockIds, _writeLockIds;
+
+        public LockingRepository(IDatabaseUnitOfWorkProvider uowProvider, Func<IDatabaseUnitOfWork, TRepository> repositoryFactory,
+            IEnumerable<int> readLockIds, IEnumerable<int> writeLockIds)
+        {
+            Mandate.ParameterNotNull(uowProvider, "uowProvider");
+            Mandate.ParameterNotNull(repositoryFactory, "repositoryFactory");
+
+            _uowProvider = uowProvider;
+            _repositoryFactory = repositoryFactory;
+            _readLockIds = readLockIds == null ? new int[0] : readLockIds.ToArray();
+            _writeLockIds = writeLockIds == null ? new int[0] : writeLockIds.ToArray();
+        }
+
+        public void WithReadLocked(Action<LockedRepository<TRepository>> action, bool autoCommit = true)
+        {
+            var uow = _uowProvider.GetUnitOfWork();
+            using (var transaction = uow.Database.GetTransaction(IsolationLevel.RepeatableRead))
+            {
+                foreach (var lockId in _readLockIds)
+                    uow.Database.AcquireLockNodeReadLock(lockId);
+
+                using (var repository = _repositoryFactory(uow))
+                {
+                    action(new LockedRepository<TRepository>(transaction, uow, repository));
+                    if (autoCommit == false) return;
+                    uow.Commit();
+                    transaction.Complete();
+                }
+            }
+        }
+
+        public TResult WithReadLocked<TResult>(Func<LockedRepository<TRepository>, TResult> func, bool autoCommit = true)
+        {
+            var uow = _uowProvider.GetUnitOfWork();
+            using (var transaction = uow.Database.GetTransaction(IsolationLevel.RepeatableRead))
+            {
+                foreach (var lockId in _readLockIds)
+                    uow.Database.AcquireLockNodeReadLock(lockId);
+
+                using (var repository = _repositoryFactory(uow))
+                {
+                    var ret = func(new LockedRepository<TRepository>(transaction, uow, repository));
+                    if (autoCommit == false) return ret;
+                    uow.Commit();
+                    transaction.Complete();
+                    return ret;
+                }
+            }
+        }
+
+        public void WithWriteLocked(Action<LockedRepository<TRepository>> action, bool autoCommit = true)
+        {
+            var uow = _uowProvider.GetUnitOfWork();
+            using (var transaction = uow.Database.GetTransaction(IsolationLevel.RepeatableRead))
+            {
+                foreach (var lockId in _writeLockIds)
+                    uow.Database.AcquireLockNodeWriteLock(lockId);
+
+                using (var repository = _repositoryFactory(uow))
+                {
+                    action(new LockedRepository<TRepository>(transaction, uow, repository));
+                    if (autoCommit == false) return;
+                    uow.Commit();
+                    transaction.Complete();
+                }
+            }
+        }
+
+        public TResult WithWriteLocked<TResult>(Func<LockedRepository<TRepository>, TResult> func, bool autoCommit = true)
+        {
+            var uow = _uowProvider.GetUnitOfWork();
+            using (var transaction = uow.Database.GetTransaction(IsolationLevel.RepeatableRead))
+            {
+                foreach (var lockId in _writeLockIds)
+                    uow.Database.AcquireLockNodeReadLock(lockId);
+
+                using (var repository = _repositoryFactory(uow))
+                {
+                    var ret = func(new LockedRepository<TRepository>(transaction, uow, repository));
+                    if (autoCommit == false) return ret;
+                    uow.Commit();
+                    transaction.Complete();
+                    return ret;
+                }
+            }
+        }
+    }
+}

src/Umbraco.Core/Persistence/Mappers/ServerRegistrationMapper.cs

@@ -30,6 +30,7 @@ namespace Umbraco.Core.Persistence.Mappers
         {
             CacheMap<ServerRegistration, ServerRegistrationDto>(src => src.Id, dto => dto.Id);
             CacheMap<ServerRegistration, ServerRegistrationDto>(src => src.IsActive, dto => dto.IsActive);
+            CacheMap<ServerRegistration, ServerRegistrationDto>(src => src.IsMaster, dto => dto.IsMaster);
             CacheMap<ServerRegistration, ServerRegistrationDto>(src => src.ServerAddress, dto => dto.ServerAddress);
             CacheMap<ServerRegistration, ServerRegistrationDto>(src => src.CreateDate, dto => dto.DateRegistered);
             CacheMap<ServerRegistration, ServerRegistrationDto>(src => src.UpdateDate, dto => dto.DateAccessed);

src/Umbraco.Core/Persistence/Migrations/Initial/BaseDataCreation.cs

@@ -1,4 +1,5 @@
 using System;
+using Umbraco.Core.Configuration;
 using Umbraco.Core.Logging;
 using Umbraco.Core.Models.Rdbms;
 
@@ -86,11 +87,17 @@ namespace Umbraco.Core.Persistence.Migrations.Initial
             {
                 CreateUmbracoRelationTypeData();
             }
+
             if (tableName.Equals("cmsTaskType"))
             {
                 CreateCmsTaskTypeData();
             }
 
+            if (tableName.Equals("umbracoMigration"))
+            {
+                CreateUmbracoMigrationData();
+            }
+
             _logger.Info<BaseDataCreation>(string.Format("Done creating data in table {0}", tableName));
         }
 
@@ -274,5 +281,18 @@ namespace Umbraco.Core.Persistence.Migrations.Initial
         {
             _database.Insert("cmsTaskType", "id", false, new TaskTypeDto { Id = 1, Alias = "toTranslate" });
         }
+
+        private void CreateUmbracoMigrationData()
+        {
+            var dto = new MigrationDto
+            {
+                Id = 1,
+                Name = GlobalSettings.UmbracoMigrationName,
+                Version = UmbracoVersion.GetSemanticVersion().ToString(),
+                CreateDate = DateTime.Now
+            };
+
+            _database.Insert("umbracoMigration", "pk", false, dto);
+        }
     }
 }

src/Umbraco.Core/Persistence/Migrations/MigrationBase.cs

@@ -16,13 +16,7 @@ namespace Umbraco.Core.Persistence.Migrations
     {
         public ISqlSyntaxProvider SqlSyntax { get; private set; }
         public ILogger Logger { get; private set; }
-
-        [Obsolete("Use the other constructor specifying all dependencies instead")]
-        protected MigrationBase()
-            : this(SqlSyntaxContext.SqlSyntaxProvider, LoggerResolver.Current.Logger)
-        {                
-        }
-
+        
         protected MigrationBase(ISqlSyntaxProvider sqlSyntax, ILogger logger)
         {
             SqlSyntax = sqlSyntax;
@@ -48,7 +42,7 @@ namespace Umbraco.Core.Persistence.Migrations
 
         public IAlterSyntaxBuilder Alter
         {
-            get { return new AlterSyntaxBuilder(Context); }
+            get { return new AlterSyntaxBuilder(Context, SqlSyntax); }
         }
 
         public ICreateBuilder Create
@@ -63,27 +57,27 @@ namespace Umbraco.Core.Persistence.Migrations
 
         public IExecuteBuilder Execute
         {
-            get { return new ExecuteBuilder(Context); }
+            get { return new ExecuteBuilder(Context, SqlSyntax); }
         }
 
         public IInsertBuilder Insert
         {
-            get { return new InsertBuilder(Context); }
+            get { return new InsertBuilder(Context, SqlSyntax); }
         }
 
         public IRenameBuilder Rename
         {
-            get { return new RenameBuilder(Context); }
+            get { return new RenameBuilder(Context, SqlSyntax); }
         }
 
         public IUpdateBuilder Update
         {
-            get { return new UpdateBuilder(Context); }
+            get { return new UpdateBuilder(Context, SqlSyntax); }
         }
 
         public IIfDatabaseBuilder IfDatabase(params DatabaseProviders[] databaseProviders)
         {
-            return new IfDatabaseBuilder(Context, databaseProviders);
+            return new IfDatabaseBuilder(Context, SqlSyntax, databaseProviders);
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/MigrationExpressionBase.cs

@@ -7,22 +7,22 @@ namespace Umbraco.Core.Persistence.Migrations
 {
     public abstract class MigrationExpressionBase : IMigrationExpression
     {
-        [Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
-        protected MigrationExpressionBase()
-            : this(SqlSyntaxContext.SqlSyntaxProvider)
-        {
-        }
+        //[Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
+        //protected MigrationExpressionBase()
+        //    : this(SqlSyntaxContext.SqlSyntaxProvider)
+        //{
+        //}
 
-        [Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
-        protected MigrationExpressionBase(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : this(current, databaseProviders, SqlSyntaxContext.SqlSyntaxProvider)
-        {
-        }
+        //[Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
+        //protected MigrationExpressionBase(DatabaseProviders current, DatabaseProviders[] databaseProviders)
+        //    : this(current, databaseProviders, SqlSyntaxContext.SqlSyntaxProvider)
+        //{
+        //}
 
-        protected MigrationExpressionBase(ISqlSyntaxProvider sqlSyntax)
-        {
-            SqlSyntax = sqlSyntax;
-        }
+        //protected MigrationExpressionBase(ISqlSyntaxProvider sqlSyntax)
+        //{
+        //    SqlSyntax = sqlSyntax;
+        //}
 
         protected MigrationExpressionBase(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
         {
@@ -76,8 +76,10 @@ namespace Umbraco.Core.Persistence.Migrations
                 case TypeCode.UInt32:
                 case TypeCode.UInt64:
                     return val.ToString();
+                case TypeCode.DateTime:
+                    return SqlSyntax.GetQuotedValue(SqlSyntax.FormatDateTime((DateTime) val));
                 default:
-                    return SqlSyntaxContext.SqlSyntaxProvider.GetQuotedValue(val.ToString());
+                    return SqlSyntax.GetQuotedValue(val.ToString());
             }
         }
     }

src/Umbraco.Core/Persistence/Migrations/MigrationRunner.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
+using System.Text;
 using log4net;
 using Semver;
 using Umbraco.Core.Configuration;
@@ -243,13 +245,43 @@ namespace Umbraco.Core.Persistence.Migrations
                     //TODO: We should output all of these SQL calls to files in a migration folder in App_Data/TEMP
                     // so if people want to executed them manually on another environment, they can.
 
-                    _logger.Info<MigrationRunner>("Executing sql statement " + i + ": " + sql);
-                    database.Execute(sql);
+                    //The following ensures the multiple statement sare executed one at a time, this is a requirement
+                    // of SQLCE, it's unfortunate but necessary.
+                    // http://stackoverflow.com/questions/13665491/sql-ce-inconsistent-with-multiple-statements
+                    var sb = new StringBuilder();
+                    using (var reader = new StringReader(sql))
+                    {
+                        string line;
+                        while ((line = reader.ReadLine()) != null)
+                        {
+                            line = line.Trim();
+                            if (line.Equals("GO", StringComparison.OrdinalIgnoreCase))
+                            {
+                                //Execute the SQL up to the point of a GO statement
+                                var exeSql = sb.ToString();
+                                _logger.Info<MigrationRunner>("Executing sql statement " + i + ": " + exeSql);
+                                database.Execute(exeSql);
+                                
+                                //restart the string builder
+                                sb.Remove(0, sb.Length);
+                            }
+                            else
+                            {
+                                sb.AppendLine(line);
+                            }
+                        }
+                        //execute anything remaining
+                        if (sb.Length > 0)
+                        {
+                            var exeSql = sb.ToString();
+                            _logger.Info<MigrationRunner>("Executing sql statement " + i + ": " + exeSql);
+                            database.Execute(exeSql);
+                        }
+                    }
+                    
                     i++;
                 }
 
-                
-
                 transaction.Complete();
 
                 //Now that this is all complete, we need to add an entry to the migrations table flagging that migrations

src/Umbraco.Core/Persistence/Migrations/Syntax/Alter/AlterSyntaxBuilder.cs

@@ -1,30 +1,35 @@
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column;
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter
 {
     public class AlterSyntaxBuilder : IAlterSyntaxBuilder
     {
         private readonly IMigrationContext _context;
+        private readonly ISqlSyntaxProvider _sqlSyntax;
+        private readonly DatabaseProviders[] _databaseProviders;
 
-        public AlterSyntaxBuilder(IMigrationContext context)
+        public AlterSyntaxBuilder(IMigrationContext context, ISqlSyntaxProvider sqlSyntax, params DatabaseProviders[] databaseProviders)
         {
             _context = context;
+            _sqlSyntax = sqlSyntax;
+            _databaseProviders = databaseProviders;
         }
 
         public IAlterTableSyntax Table(string tableName)
         {
-            var expression = new AlterTableExpression { TableName = tableName };
+            var expression = new AlterTableExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { TableName = tableName };
             //_context.Expressions.Add(expression);
-            return new AlterTableBuilder(expression, _context);
+            return new AlterTableBuilder(_context, _databaseProviders, expression);
         }
 
         public IAlterColumnSyntax Column(string columnName)
         {
-            var expression = new AlterColumnExpression { Column = { Name = columnName } };
+            var expression = new AlterColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) {Column = {Name = columnName}};
             //_context.Expressions.Add(expression);
-            return new AlterColumnBuilder(expression, _context);
+            return new AlterColumnBuilder(_context, _databaseProviders, expression);
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Alter/Column/AlterColumnBuilder.cs

@@ -2,6 +2,7 @@
 using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Expressions;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
 {
@@ -11,11 +12,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
                                             IAlterColumnOptionForeignKeyCascadeSyntax
     {
         private readonly IMigrationContext _context;
+        private readonly DatabaseProviders[] _databaseProviders;
 
-        public AlterColumnBuilder(AlterColumnExpression expression, IMigrationContext context)
+        public AlterColumnBuilder(IMigrationContext context, DatabaseProviders[] databaseProviders, AlterColumnExpression expression)
             : base(expression)
         {
             _context = context;
+            _databaseProviders = databaseProviders;
         }
 
         public ForeignKeyDefinition CurrentForeignKey { get; set; }
@@ -33,7 +36,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
 
         public IAlterColumnOptionSyntax WithDefault(SystemMethods method)
         {
-            var dc = new AlterDefaultConstraintExpression
+            var dc = new AlterDefaultConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax)
                          {
                              TableName = Expression.TableName,
                              SchemaName = Expression.SchemaName,
@@ -51,7 +54,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
 
         public IAlterColumnOptionSyntax WithDefaultValue(object value)
         {
-            var dc = new AlterDefaultConstraintExpression
+            var dc = new AlterDefaultConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax)
                          {
                              TableName = Expression.TableName,
                              SchemaName = Expression.SchemaName,
@@ -81,15 +84,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
         {
             Expression.Column.IsIndexed = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -135,16 +135,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
         {
             Expression.Column.IsUnique = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName,
-                                                IsUnique = true
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName,
+                IsUnique = true
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -172,17 +169,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
         {
             Expression.Column.IsForeignKey = true;
 
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = primaryTableName,
-                                                  PrimaryTableSchema = primaryTableSchema,
-                                                  ForeignTable = Expression.TableName,
-                                                  ForeignTableSchema = Expression.SchemaName
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = primaryTableName,
+                PrimaryTableSchema = primaryTableSchema,
+                ForeignTable = Expression.TableName,
+                ForeignTableSchema = Expression.SchemaName
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(primaryColumnName);
             fk.ForeignKey.ForeignColumns.Add(Expression.Column.Name);
@@ -212,17 +206,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column
         public IAlterColumnOptionForeignKeyCascadeSyntax ReferencedBy(string foreignKeyName, string foreignTableSchema,
                                                                       string foreignTableName, string foreignColumnName)
         {
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = Expression.TableName,
-                                                  PrimaryTableSchema = Expression.SchemaName,
-                                                  ForeignTable = foreignTableName,
-                                                  ForeignTableSchema = foreignTableSchema
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = Expression.TableName,
+                PrimaryTableSchema = Expression.SchemaName,
+                ForeignTable = foreignTableName,
+                ForeignTableSchema = foreignTableSchema
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(Expression.Column.Name);
             fk.ForeignKey.ForeignColumns.Add(foreignColumnName);

src/Umbraco.Core/Persistence/Migrations/Syntax/Alter/Expressions/AlterColumnExpression.cs

@@ -6,11 +6,11 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions
 {
     public class AlterColumnExpression : MigrationExpressionBase
     {
-        public AlterColumnExpression(ISqlSyntaxProvider sqlSyntax)
-            : base(sqlSyntax)
-        {
-            Column = new ColumnDefinition() { ModificationType = ModificationType.Alter };
-        }
+        //public AlterColumnExpression(ISqlSyntaxProvider sqlSyntax)
+        //    : base(sqlSyntax)
+        //{
+        //    Column = new ColumnDefinition() { ModificationType = ModificationType.Alter };
+        //}
 
         public AlterColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
             : base(current, databaseProviders, sqlSyntax)
@@ -18,17 +18,17 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions
             Column = new ColumnDefinition() { ModificationType = ModificationType.Alter };
         }
 
-        [Obsolete("Use the constructor specifying an ISqlSyntaxProvider instead")]
-        public AlterColumnExpression()
-            : this(SqlSyntaxContext.SqlSyntaxProvider)
-        {
-        }
+        //[Obsolete("Use the constructor specifying an ISqlSyntaxProvider instead")]
+        //public AlterColumnExpression()
+        //    : this(SqlSyntaxContext.SqlSyntaxProvider)
+        //{
+        //}
 
-        [Obsolete("Use the constructor specifying an ISqlSyntaxProvider instead")]
-        public AlterColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : this(current, databaseProviders, SqlSyntaxContext.SqlSyntaxProvider)
-        {
-        }
+        //[Obsolete("Use the constructor specifying an ISqlSyntaxProvider instead")]
+        //public AlterColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
+        //    : this(current, databaseProviders, SqlSyntaxContext.SqlSyntaxProvider)
+        //{
+        //}
 
         
 
@@ -42,9 +42,9 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions
             //    SqlSyntaxContext.SqlSyntaxProvider.GetQuotedColumnName(Column.Name),
             //    SqlSyntaxContext.SqlSyntaxProvider.Format(Column));
 
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.AlterColumn,
-                                SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName),
-                                SqlSyntaxContext.SqlSyntaxProvider.Format(Column));
+            return string.Format(SqlSyntax.AlterColumn,
+                                SqlSyntax.GetQuotedTableName(TableName),
+                                SqlSyntax.Format(Column));
 
             //return string.Format(SqlSyntaxContext.SqlSyntaxProvider.AlterColumn,
             //                     SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName),

src/Umbraco.Core/Persistence/Migrations/Syntax/Alter/Expressions/AlterDefaultConstraintExpression.cs

@@ -4,11 +4,8 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions
 {
     public class AlterDefaultConstraintExpression : MigrationExpressionBase
     {
-        public AlterDefaultConstraintExpression()
-        {
-        }
-
-        public AlterDefaultConstraintExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        public AlterDefaultConstraintExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax) 
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
@@ -22,9 +19,9 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions
         {
             //NOTE Should probably investigate if Deleting a Default Constraint is different from deleting a 'regular' constraint
 
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.DeleteConstraint,
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName),
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedName(ConstraintName));
+            return string.Format(SqlSyntax.DeleteConstraint,
+                                 SqlSyntax.GetQuotedTableName(TableName),
+                                 SqlSyntax.GetQuotedName(ConstraintName));
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Alter/Expressions/AlterTableExpression.cs

@@ -1,12 +1,12 @@
-namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions
+using Umbraco.Core.Persistence.SqlSyntax;
+
+namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions
 {
     public class AlterTableExpression : MigrationExpressionBase
     {
-        public AlterTableExpression()
-        {
-        }
 
-        public AlterTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        public AlterTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax) 
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 

src/Umbraco.Core/Persistence/Migrations/Syntax/Alter/Table/AlterTableBuilder.cs

@@ -2,6 +2,7 @@
 using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Expressions;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
 {
@@ -10,11 +11,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
                                                IAlterTableColumnOptionForeignKeyCascadeSyntax
     {
         private readonly IMigrationContext _context;
+        private readonly DatabaseProviders[] _databaseProviders;
 
-        public AlterTableBuilder(AlterTableExpression expression, IMigrationContext context)
+        public AlterTableBuilder(IMigrationContext context, DatabaseProviders[] databaseProviders, AlterTableExpression expression)
             : base(expression)
         {
             _context = context;
+            _databaseProviders = databaseProviders;
         }
 
         public ColumnDefinition CurrentColumn { get; set; }
@@ -36,7 +39,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
         {
             if (CurrentColumn.ModificationType == ModificationType.Alter)
             {
-                var dc = new AlterDefaultConstraintExpression
+                var dc = new AlterDefaultConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax)
                              {
                                  TableName = Expression.TableName,
                                  SchemaName = Expression.SchemaName,
@@ -66,15 +69,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
         {
             CurrentColumn.IsIndexed = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -120,16 +120,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
         {
             CurrentColumn.IsUnique = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName,
-                                                IsUnique = true
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName,
+                IsUnique = true
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -157,17 +154,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
         {
             CurrentColumn.IsForeignKey = true;
 
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = primaryTableName,
-                                                  PrimaryTableSchema = primaryTableSchema,
-                                                  ForeignTable = Expression.TableName,
-                                                  ForeignTableSchema = Expression.SchemaName
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = primaryTableName,
+                PrimaryTableSchema = primaryTableSchema,
+                ForeignTable = Expression.TableName,
+                ForeignTableSchema = Expression.SchemaName
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(primaryColumnName);
             fk.ForeignKey.ForeignColumns.Add(CurrentColumn.Name);
@@ -197,17 +191,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
         public IAlterTableColumnOptionForeignKeyCascadeSyntax ReferencedBy(string foreignKeyName, string foreignTableSchema,
                                                                            string foreignTableName, string foreignColumnName)
         {
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = Expression.TableName,
-                                                  PrimaryTableSchema = Expression.SchemaName,
-                                                  ForeignTable = foreignTableName,
-                                                  ForeignTableSchema = foreignTableSchema
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = Expression.TableName,
+                PrimaryTableSchema = Expression.SchemaName,
+                ForeignTable = foreignTableName,
+                ForeignTableSchema = foreignTableSchema
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(CurrentColumn.Name);
             fk.ForeignKey.ForeignColumns.Add(foreignColumnName);
@@ -220,7 +211,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
         public IAlterTableColumnTypeSyntax AddColumn(string name)
         {
             var column = new ColumnDefinition { Name = name, ModificationType = ModificationType.Create };
-            var createColumn = new CreateColumnExpression
+            var createColumn = new CreateColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax)
                                    {
                                        Column = column,
                                        SchemaName = Expression.SchemaName,
@@ -236,12 +227,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table
         public IAlterTableColumnTypeSyntax AlterColumn(string name)
         {
             var column = new ColumnDefinition { Name = name, ModificationType = ModificationType.Alter };
-            var alterColumn = new AlterColumnExpression
-                                  {
-                                      Column = column,
-                                      SchemaName = Expression.SchemaName,
-                                      TableName = Expression.TableName
-                                  };
+            var alterColumn = new AlterColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax)
+            {
+                Column = column,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName
+            };
 
             CurrentColumn = column;
 

src/Umbraco.Core/Persistence/Migrations/Syntax/Create/Column/CreateColumnBuilder.cs

@@ -1,6 +1,7 @@
 using System.Data;
 using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Expressions;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Column
 {
@@ -10,11 +11,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Column
                                              ICreateColumnOptionForeignKeyCascadeSyntax
     {
         private readonly IMigrationContext _context;
+        private readonly DatabaseProviders[] _databaseProviders;
 
-        public CreateColumnBuilder(CreateColumnExpression expression, IMigrationContext context)
+        public CreateColumnBuilder(IMigrationContext context, DatabaseProviders[] databaseProviders, CreateColumnExpression expression)
             : base(expression)
         {
             _context = context;
+            _databaseProviders = databaseProviders;
         }
 
         public ForeignKeyDefinition CurrentForeignKey { get; set; }
@@ -56,15 +59,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Column
         {
             Expression.Column.IsIndexed = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -110,16 +110,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Column
         {
             Expression.Column.IsUnique = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName,
-                                                IsUnique = true
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName,
+                IsUnique = true
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -147,17 +144,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Column
         {
             Expression.Column.IsForeignKey = true;
 
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = primaryTableName,
-                                                  PrimaryTableSchema = primaryTableSchema,
-                                                  ForeignTable = Expression.TableName,
-                                                  ForeignTableSchema = Expression.SchemaName
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = primaryTableName,
+                PrimaryTableSchema = primaryTableSchema,
+                ForeignTable = Expression.TableName,
+                ForeignTableSchema = Expression.SchemaName
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(primaryColumnName);
             fk.ForeignKey.ForeignColumns.Add(Expression.Column.Name);
@@ -187,17 +181,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Column
         public ICreateColumnOptionForeignKeyCascadeSyntax ReferencedBy(string foreignKeyName, string foreignTableSchema,
                                                                        string foreignTableName, string foreignColumnName)
         {
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = Expression.TableName,
-                                                  PrimaryTableSchema = Expression.SchemaName,
-                                                  ForeignTable = foreignTableName,
-                                                  ForeignTableSchema = foreignTableSchema
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = Expression.TableName,
+                PrimaryTableSchema = Expression.SchemaName,
+                ForeignTable = foreignTableName,
+                ForeignTableSchema = foreignTableSchema
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(Expression.Column.Name);
             fk.ForeignKey.ForeignColumns.Add(foreignColumnName);

src/Umbraco.Core/Persistence/Migrations/Syntax/Create/CreateBuilder.cs

@@ -19,75 +19,66 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create
 
         public CreateBuilder(IMigrationContext context, ISqlSyntaxProvider sqlSyntax, params DatabaseProviders[] databaseProviders)
         {
+            if (context == null) throw new ArgumentNullException("context");
+            if (sqlSyntax == null) throw new ArgumentNullException("sqlSyntax");
+
             _context = context;
             _sqlSyntax = sqlSyntax;
             _databaseProviders = databaseProviders;
         }
 
-        [Obsolete("Use alternate ctor specifying ISqlSyntaxProvider instead")]
-        public CreateBuilder(IMigrationContext context, params DatabaseProviders[] databaseProviders)
-            :this(context, SqlSyntaxContext.SqlSyntaxProvider, databaseProviders)
-        {
-        }
-
         public ICreateTableWithColumnSyntax Table(string tableName)
         {
-            var expression = new CreateTableExpression { TableName = tableName };
+            var expression = new CreateTableExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { TableName = tableName };
             _context.Expressions.Add(expression);
-            return new CreateTableBuilder(expression, _context);
+            return new CreateTableBuilder(_context, _databaseProviders, expression);
         }
 
         public ICreateColumnOnTableSyntax Column(string columnName)
         {
-            var expression = _databaseProviders == null 
-                ? new CreateColumnExpression { Column = { Name = columnName } }
-                : new CreateColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders) { Column = { Name = columnName } };
+            var expression = new CreateColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { Column = { Name = columnName } };
             _context.Expressions.Add(expression);
-            return new CreateColumnBuilder(expression, _context);
+            return new CreateColumnBuilder(_context, _databaseProviders, expression);
         }
 
         public ICreateForeignKeyFromTableSyntax ForeignKey()
         {
-            var expression = _databaseProviders == null 
-                ? new CreateForeignKeyExpression()
-                : new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders);
+            var expression = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax);
             _context.Expressions.Add(expression);
             return new CreateForeignKeyBuilder(expression);
         }
 
         public ICreateForeignKeyFromTableSyntax ForeignKey(string foreignKeyName)
         {
-            var expression = _databaseProviders == null 
-                ? new CreateForeignKeyExpression { ForeignKey = { Name = foreignKeyName } }
-                : new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders) { ForeignKey = { Name = foreignKeyName } };
+            var expression = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { ForeignKey = { Name = foreignKeyName } };
             _context.Expressions.Add(expression);
             return new CreateForeignKeyBuilder(expression);
         }
 
         public ICreateIndexForTableSyntax Index()
         {
-            var expression = new CreateIndexExpression(_sqlSyntax);
+            var expression = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax);
             _context.Expressions.Add(expression);
             return new CreateIndexBuilder(expression);
         }
 
         public ICreateIndexForTableSyntax Index(string indexName)
         {
-            var expression = new CreateIndexExpression(_sqlSyntax) { Index = { Name = indexName } };
+            var expression = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { Index = { Name = indexName } };
             _context.Expressions.Add(expression);
             return new CreateIndexBuilder(expression);
         }
 
         public ICreateConstraintOnTableSyntax PrimaryKey()
         {
-            var expression = new CreateConstraintExpression(ConstraintType.PrimaryKey);
+            var expression = new CreateConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax, ConstraintType.PrimaryKey);
             _context.Expressions.Add(expression);
             return new CreateConstraintBuilder(expression);
         }
 
         public ICreateConstraintOnTableSyntax PrimaryKey(string primaryKeyName)
         {
-            var expression = new CreateConstraintExpression(ConstraintType.PrimaryKey);
+            var expression = new CreateConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax, ConstraintType.PrimaryKey);
             expression.Constraint.ConstraintName = primaryKeyName;
             _context.Expressions.Add(expression);
             return new CreateConstraintBuilder(expression);
@@ -95,14 +86,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create
 
         public ICreateConstraintOnTableSyntax UniqueConstraint()
         {
-            var expression = new CreateConstraintExpression(ConstraintType.Unique);
+            var expression = new CreateConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax, ConstraintType.Unique);
             _context.Expressions.Add(expression);
             return new CreateConstraintBuilder(expression);
         }
 
         public ICreateConstraintOnTableSyntax UniqueConstraint(string constraintName)
         {
-            var expression = new CreateConstraintExpression(ConstraintType.Unique);
+            var expression = new CreateConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax, ConstraintType.Unique);
             expression.Constraint.ConstraintName = constraintName;
             _context.Expressions.Add(expression);
             return new CreateConstraintBuilder(expression);
@@ -110,7 +101,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create
 
         public ICreateConstraintOnTableSyntax Constraint(string constraintName)
         {
-            var expression = new CreateConstraintExpression(ConstraintType.NonUnique);
+            var expression = new CreateConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax, ConstraintType.NonUnique);
             expression.Constraint.ConstraintName = constraintName;
             _context.Expressions.Add(expression);
             return new CreateConstraintBuilder(expression);

src/Umbraco.Core/Persistence/Migrations/Syntax/Create/Expressions/CreateConstraintExpression.cs

@@ -6,10 +6,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Expressions
 {
     public class CreateConstraintExpression : MigrationExpressionBase
     {
-        public CreateConstraintExpression(ConstraintType type)
+        public CreateConstraintExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax, ConstraintType constraint) 
+            : base(current, databaseProviders, sqlSyntax)
         {
-            Constraint = new ConstraintDefinition(type);
+            Constraint = new ConstraintDefinition(constraint);
         }
+        
 
         public ConstraintDefinition Constraint { get; private set; }
 
@@ -17,7 +19,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Expressions
         {
             var constraintType = (Constraint.IsPrimaryKeyConstraint) ? "PRIMARY KEY" : "UNIQUE";
 
-            if (Constraint.IsPrimaryKeyConstraint && SqlSyntaxContext.SqlSyntaxProvider.SupportsClustered())
+            if (Constraint.IsPrimaryKeyConstraint && SqlSyntax.SupportsClustered())
                 constraintType += " CLUSTERED";
 
             if (Constraint.IsNonUniqueConstraint)
@@ -27,12 +29,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Expressions
 
             for (int i = 0; i < Constraint.Columns.Count; i++)
             {
-                columns[i] = SqlSyntaxContext.SqlSyntaxProvider.GetQuotedColumnName(Constraint.Columns.ElementAt(i));
+                columns[i] = SqlSyntax.GetQuotedColumnName(Constraint.Columns.ElementAt(i));
             }
 
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.CreateConstraint,
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(Constraint.TableName),
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedName(Constraint.ConstraintName),
+            return string.Format(SqlSyntax.CreateConstraint,
+                                 SqlSyntax.GetQuotedTableName(Constraint.TableName),
+                                 SqlSyntax.GetQuotedName(Constraint.ConstraintName),
                                  constraintType,
                                  string.Join(", ", columns));
         }

src/Umbraco.Core/Persistence/Migrations/Syntax/Create/Expressions/CreateTableExpression.cs

@@ -7,24 +7,24 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Expressions
 {
     public class CreateTableExpression : MigrationExpressionBase
     {
-        [Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
-        public CreateTableExpression()
-        {
-            Columns = new List<ColumnDefinition>();
-        }
+        //[Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
+        //public CreateTableExpression()
+        //{
+        //    Columns = new List<ColumnDefinition>();
+        //}
 
-        [Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
-        public CreateTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
-        {
-            Columns = new List<ColumnDefinition>();
-        }
+        //[Obsolete("Use the other constructors specifying an ISqlSyntaxProvider instead")]
+        //public CreateTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
+        //    : base(current, databaseProviders)
+        //{
+        //    Columns = new List<ColumnDefinition>();
+        //}
 
-        public CreateTableExpression(ISqlSyntaxProvider sqlSyntax)
-            : base(sqlSyntax)
-        {
-            Columns = new List<ColumnDefinition>();
-        }
+        //public CreateTableExpression(ISqlSyntaxProvider sqlSyntax)
+        //    : base(sqlSyntax)
+        //{
+        //    Columns = new List<ColumnDefinition>();
+        //}
 
         public CreateTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
             : base(current, databaseProviders, sqlSyntax)

src/Umbraco.Core/Persistence/Migrations/Syntax/Create/Table/CreateTableBuilder.cs

@@ -2,6 +2,7 @@
 using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Create.Expressions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Expressions;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
 {
@@ -11,11 +12,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
                                                 ICreateTableColumnOptionForeignKeyCascadeSyntax
     {
         private readonly IMigrationContext _context;
+        private readonly DatabaseProviders[] _databaseProviders;
 
-        public CreateTableBuilder(CreateTableExpression expression, IMigrationContext context)
+        public CreateTableBuilder(IMigrationContext context, DatabaseProviders[] databaseProviders, CreateTableExpression expression)
             : base(expression)
         {
             _context = context;
+            _databaseProviders = databaseProviders;
         }
 
         public ColumnDefinition CurrentColumn { get; set; }
@@ -62,15 +65,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
         {
             CurrentColumn.IsIndexed = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -86,15 +86,25 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
         {
             CurrentColumn.IsPrimaryKey = true;
 
-            var expression = new CreateConstraintExpression(ConstraintType.PrimaryKey)
+            //For MySQL, the PK will be created WITH the create table expression, however for 
+            // SQL Server, the PK get's created in a different Alter table expression afterwords.
+            // MySQL will choke if the same constraint is again added afterword
+            // TODO: This is a super hack, I'd rather not add another property like 'CreatesPkInCreateTableDefinition' to check
+            // for this, but I don't see another way around. MySQL doesn't support checking for a constraint before creating
+            // it... except in a very strange way but it doesn't actually provider error feedback if it doesn't work so we cannot use
+            // it.  For now, this is what I'm doing
+            if (Expression.CurrentDatabaseProvider != DatabaseProviders.MySql)
             {
-                Constraint =
+                var expression = new CreateConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, ConstraintType.PrimaryKey)
+                {
+                    Constraint =
                 {
                     TableName = CurrentColumn.TableName,
                     Columns = new[] { CurrentColumn.Name }
                 }
-            };
-            _context.Expressions.Add(expression);
+                };
+                _context.Expressions.Add(expression);
+            }
 
             return this;
         }
@@ -104,16 +114,27 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
             CurrentColumn.IsPrimaryKey = true;
             CurrentColumn.PrimaryKeyName = primaryKeyName;
 
-            var expression = new CreateConstraintExpression(ConstraintType.PrimaryKey)
+            //For MySQL, the PK will be created WITH the create table expression, however for 
+            // SQL Server, the PK get's created in a different Alter table expression afterwords.
+            // MySQL will choke if the same constraint is again added afterword
+            // TODO: This is a super hack, I'd rather not add another property like 'CreatesPkInCreateTableDefinition' to check
+            // for this, but I don't see another way around. MySQL doesn't support checking for a constraint before creating
+            // it... except in a very strange way but it doesn't actually provider error feedback if it doesn't work so we cannot use
+            // it.  For now, this is what I'm doing
+
+            if (Expression.CurrentDatabaseProvider != DatabaseProviders.MySql)
             {
-                Constraint =
+                var expression = new CreateConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, ConstraintType.PrimaryKey)
+                {
+                    Constraint =
                 {
                     ConstraintName = primaryKeyName,
                     TableName = CurrentColumn.TableName,
                     Columns = new[] { CurrentColumn.Name }
                 }
-            };
-            _context.Expressions.Add(expression);
+                };
+                _context.Expressions.Add(expression);
+            }
             
             return this;
         }
@@ -139,16 +160,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
         {
             CurrentColumn.IsUnique = true;
 
-            var index = new CreateIndexExpression
-                            {
-                                Index = new IndexDefinition
-                                            {
-                                                Name = indexName,
-                                                SchemaName = Expression.SchemaName,
-                                                TableName = Expression.TableName,
-                                                IsUnique = true
-                                            }
-                            };
+            var index = new CreateIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new IndexDefinition
+            {
+                Name = indexName,
+                SchemaName = Expression.SchemaName,
+                TableName = Expression.TableName,
+                IsUnique = true
+            });
 
             index.Index.Columns.Add(new IndexColumnDefinition
                                         {
@@ -176,17 +194,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
         {
             CurrentColumn.IsForeignKey = true;
 
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = primaryTableName,
-                                                  PrimaryTableSchema = primaryTableSchema,
-                                                  ForeignTable = Expression.TableName,
-                                                  ForeignTableSchema = Expression.SchemaName
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = primaryTableName,
+                PrimaryTableSchema = primaryTableSchema,
+                ForeignTable = Expression.TableName,
+                ForeignTableSchema = Expression.SchemaName
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(primaryColumnName);
             fk.ForeignKey.ForeignColumns.Add(CurrentColumn.Name);
@@ -216,17 +231,14 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Create.Table
         public ICreateTableColumnOptionForeignKeyCascadeSyntax ReferencedBy(string foreignKeyName, string foreignTableSchema,
                                                                             string foreignTableName, string foreignColumnName)
         {
-            var fk = new CreateForeignKeyExpression
-                         {
-                             ForeignKey = new ForeignKeyDefinition
-                                              {
-                                                  Name = foreignKeyName,
-                                                  PrimaryTable = Expression.TableName,
-                                                  PrimaryTableSchema = Expression.SchemaName,
-                                                  ForeignTable = foreignTableName,
-                                                  ForeignTableSchema = foreignTableSchema
-                                              }
-                         };
+            var fk = new CreateForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, Expression.SqlSyntax, new ForeignKeyDefinition
+            {
+                Name = foreignKeyName,
+                PrimaryTable = Expression.TableName,
+                PrimaryTableSchema = Expression.SchemaName,
+                ForeignTable = foreignTableName,
+                ForeignTableSchema = foreignTableSchema
+            });
 
             fk.ForeignKey.PrimaryColumns.Add(CurrentColumn.Name);
             fk.ForeignKey.ForeignColumns.Add(foreignColumnName);

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/DeleteBuilder.cs

@@ -23,69 +23,57 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete
             _databaseProviders = databaseProviders;
         }
 
-        [Obsolete("Use the other constructor specifying an ISqlSyntaxProvider instead")]
-        public DeleteBuilder(IMigrationContext context, params DatabaseProviders[] databaseProviders)
-            : this(context, SqlSyntaxContext.SqlSyntaxProvider, databaseProviders)
-        {
-        }
-
         public void Table(string tableName)
         {
-            var expression = new DeleteTableExpression { TableName = tableName };
+            var expression = new DeleteTableExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { TableName = tableName };
             _context.Expressions.Add(expression);
         }
 
         public IDeleteColumnFromTableSyntax Column(string columnName)
         {
-            var expression = _databaseProviders == null
-                ? new DeleteColumnExpression { ColumnNames = { columnName } }
-                : new DeleteColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders) { ColumnNames = { columnName } };
+            var expression = new DeleteColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) {ColumnNames = {columnName}};
             _context.Expressions.Add(expression);
             return new DeleteColumnBuilder(expression);
         }
 
         public IDeleteForeignKeyFromTableSyntax ForeignKey()
         {
-            var expression = _databaseProviders == null
-                ? new DeleteForeignKeyExpression(_sqlSyntax)
-                : new DeleteForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax);
+            var expression = new DeleteForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax);
             _context.Expressions.Add(expression);
             return new DeleteForeignKeyBuilder(expression);
         }
 
         public IDeleteForeignKeyOnTableSyntax ForeignKey(string foreignKeyName)
         {
-            var expression = _databaseProviders == null
-                ? new DeleteForeignKeyExpression(_sqlSyntax) { ForeignKey = { Name = foreignKeyName } }
-                : new DeleteForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { ForeignKey = { Name = foreignKeyName } };
+            var expression = new DeleteForeignKeyExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) {ForeignKey = {Name = foreignKeyName}};
             _context.Expressions.Add(expression);
             return new DeleteForeignKeyBuilder(expression);
         }
 
         public IDeleteDataSyntax FromTable(string tableName)
         {
-            var expression = new DeleteDataExpression { TableName = tableName };
+            var expression = new DeleteDataExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { TableName = tableName };
             _context.Expressions.Add(expression);
             return new DeleteDataBuilder(expression);
         }
 
         public IDeleteIndexForTableSyntax Index()
         {
-            var expression = new DeleteIndexExpression();
+            var expression = new DeleteIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax);
             _context.Expressions.Add(expression);
             return new DeleteIndexBuilder(expression);
         }
 
         public IDeleteIndexForTableSyntax Index(string indexName)
         {
-            var expression = new DeleteIndexExpression { Index = { Name = indexName } };
+            var expression = new DeleteIndexExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { Index = { Name = indexName } };
             _context.Expressions.Add(expression);
             return new DeleteIndexBuilder(expression);
         }
 
         public IDeleteConstraintOnTableSyntax PrimaryKey(string primaryKeyName)
         {
-            var expression = new DeleteConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, ConstraintType.PrimaryKey)
+            var expression = new DeleteConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax, ConstraintType.PrimaryKey)
             {
                 Constraint = { ConstraintName = primaryKeyName }
             };
@@ -95,7 +83,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete
 
         public IDeleteConstraintOnTableSyntax UniqueConstraint(string constraintName)
         {
-            var expression = new DeleteConstraintExpression(ConstraintType.Unique)
+            var expression = new DeleteConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax, ConstraintType.Unique)
             {
                 Constraint = { ConstraintName = constraintName }
             };
@@ -105,9 +93,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete
 
         public IDeleteDefaultConstraintOnTableSyntax DefaultConstraint()
         {
-            var expression = _databaseProviders == null
-                ? new DeleteDefaultConstraintExpression()
-                : new DeleteDefaultConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders);
+            var expression = new DeleteDefaultConstraintExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax);
             _context.Expressions.Add(expression);
             return new DeleteDefaultConstraintBuilder(expression);
         }

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/Expressions/DeleteColumnExpression.cs

@@ -7,13 +7,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 {
     public class DeleteColumnExpression : MigrationExpressionBase
     {
-        public DeleteColumnExpression()
-        {
-            ColumnNames = new List<string>();
-        }
+        //public DeleteColumnExpression()
+        //{
+        //    ColumnNames = new List<string>();
+        //}
 
-        public DeleteColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
+        public DeleteColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
             ColumnNames = new List<string>();
         }
@@ -31,9 +31,9 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
             foreach (string columnName in ColumnNames)
             {
                 if (ColumnNames.First() != columnName) sb.AppendLine(";");
-                sb.AppendFormat(SqlSyntaxContext.SqlSyntaxProvider.DropColumn,
-                                SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName),
-                                SqlSyntaxContext.SqlSyntaxProvider.GetQuotedColumnName(columnName));
+                sb.AppendFormat(SqlSyntax.DropColumn,
+                                SqlSyntax.GetQuotedTableName(TableName),
+                                SqlSyntax.GetQuotedColumnName(columnName));
             }
 
             return sb.ToString();

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/Expressions/DeleteConstraintExpression.cs

@@ -5,13 +5,9 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 {
     public class DeleteConstraintExpression : MigrationExpressionBase
     {
-        public DeleteConstraintExpression(ConstraintType type)
-        {
-            Constraint = new ConstraintDefinition(type);
-        }
-
-        public DeleteConstraintExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ConstraintType type)
-            : base(current, databaseProviders)
+        
+        public DeleteConstraintExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax, ConstraintType type)
+            : base(current, databaseProviders, sqlSyntax)
         {
             Constraint = new ConstraintDefinition(type);
         }
@@ -25,24 +21,24 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
             {
                 if (Constraint.IsPrimaryKeyConstraint)
                 {
-                    return string.Format(SqlSyntaxContext.SqlSyntaxProvider.DeleteConstraint,
-                                     SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(Constraint.TableName),
+                    return string.Format(SqlSyntax.DeleteConstraint,
+                                     SqlSyntax.GetQuotedTableName(Constraint.TableName),
                                      "PRIMARY KEY",
                                      "");
                 }
                 else
                 {
-                    return string.Format(SqlSyntaxContext.SqlSyntaxProvider.DeleteConstraint,
-                                     SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(Constraint.TableName),
+                    return string.Format(SqlSyntax.DeleteConstraint,
+                                     SqlSyntax.GetQuotedTableName(Constraint.TableName),
                                      "FOREIGN KEY",
                                      "");
                 }
             }
             else
             {
-                return string.Format(SqlSyntaxContext.SqlSyntaxProvider.DeleteConstraint,
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(Constraint.TableName),
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedName(Constraint.ConstraintName));
+                return string.Format(SqlSyntax.DeleteConstraint,
+                                 SqlSyntax.GetQuotedTableName(Constraint.TableName),
+                                 SqlSyntax.GetQuotedName(Constraint.ConstraintName));
             }
         }
     }

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/Expressions/DeleteDataExpression.cs

@@ -8,12 +8,9 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
     public class DeleteDataExpression : MigrationExpressionBase
     {
         private readonly List<DeletionDataDefinition> _rows = new List<DeletionDataDefinition>();
-
-        public DeleteDataExpression()
-        {
-        }
-
-        public DeleteDataExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        
+        public DeleteDataExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax) 
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
@@ -32,7 +29,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 
             if (IsAllRows)
             {
-                deleteItems.Add(string.Format(SqlSyntaxContext.SqlSyntaxProvider.DeleteData, SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName), "1 = 1"));
+                deleteItems.Add(string.Format(SqlSyntax.DeleteData, SqlSyntax.GetQuotedTableName(TableName), "1 = 1"));
             }
             else
             {
@@ -42,13 +39,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
                     foreach (KeyValuePair<string, object> item in row)
                     {
                         whereClauses.Add(string.Format("{0} {1} {2}",
-                                                       SqlSyntaxContext.SqlSyntaxProvider.GetQuotedColumnName(item.Key),
+                                                       SqlSyntax.GetQuotedColumnName(item.Key),
                                                        item.Value == null ? "IS" : "=",
                                                        GetQuotedValue(item.Value)));
                     }
 
-                    deleteItems.Add(string.Format(SqlSyntaxContext.SqlSyntaxProvider.DeleteData,
-                                                  SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName),
+                    deleteItems.Add(string.Format(SqlSyntax.DeleteData,
+                                                  SqlSyntax.GetQuotedTableName(TableName),
                                                   String.Join(" AND ", whereClauses.ToArray())));
                 }
             }

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/Expressions/DeleteDefaultConstraintExpression.cs

@@ -4,12 +4,8 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 {
     public class DeleteDefaultConstraintExpression : MigrationExpressionBase
     {
-        public DeleteDefaultConstraintExpression()
-        {
-        }
-
-        public DeleteDefaultConstraintExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
+        public DeleteDefaultConstraintExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
@@ -22,7 +18,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
             if (IsExpressionSupported() == false)
                 return string.Empty;
 
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.DeleteDefaultConstraint,
+            return string.Format(SqlSyntax.DeleteDefaultConstraint,
                                  TableName,
                                  ColumnName);
         }

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/Expressions/DeleteForeignKeyExpression.cs

@@ -8,24 +8,11 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 {
     public class DeleteForeignKeyExpression : MigrationExpressionBase
     {
-        [Obsolete("Use the other constructors specifying an ILogger instead")]
-        public DeleteForeignKeyExpression()
-        {
-            ForeignKey = new ForeignKeyDefinition();
-        }
-
-        [Obsolete("Use the other constructors specifying an ILogger instead")]
-        public DeleteForeignKeyExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
-        {
-            ForeignKey = new ForeignKeyDefinition();
-        }
-
-        public DeleteForeignKeyExpression(ISqlSyntaxProvider sqlSyntax)
-            : base(sqlSyntax)
-        {
-            ForeignKey = new ForeignKeyDefinition();
-        }
+        //public DeleteForeignKeyExpression(ISqlSyntaxProvider sqlSyntax)
+        //    : base(sqlSyntax)
+        //{
+        //    ForeignKey = new ForeignKeyDefinition();
+        //}
 
         public DeleteForeignKeyExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
             : base(current, databaseProviders, sqlSyntax)
@@ -33,7 +20,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
             ForeignKey = new ForeignKeyDefinition();
         }
 
-        public virtual ForeignKeyDefinition ForeignKey { get; set; }
+        public ForeignKeyDefinition ForeignKey { get; set; }
 
         public override string ToString()
         {
@@ -45,7 +32,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 
             if (CurrentDatabaseProvider == DatabaseProviders.MySql)
             {
-                //MySql naming "convention" for foreignkeys, which aren't explicitly named
+                //MySql naming "convention" for foreignkeys, which aren't explicitly named                
                 if (string.IsNullOrEmpty(ForeignKey.Name))
                     ForeignKey.Name = string.Format("{0}_ibfk_1", ForeignKey.ForeignTable.ToLower());
 

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/Expressions/DeleteIndexExpression.cs

@@ -5,23 +5,26 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 {
     public class DeleteIndexExpression : MigrationExpressionBase
     {
-        public DeleteIndexExpression()
+
+        public DeleteIndexExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
             Index = new IndexDefinition();
         }
 
-        public DeleteIndexExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        public DeleteIndexExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax, IndexDefinition index) 
+            : base(current, databaseProviders, sqlSyntax)
         {
-            Index = new IndexDefinition();
+            Index = index;
         }
 
-        public virtual IndexDefinition Index { get; set; }
+        public IndexDefinition Index { get; private set; }
 
         public override string ToString()
         {
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.DropIndex,
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedName(Index.Name),
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(Index.TableName));
+            return string.Format(SqlSyntax.DropIndex,
+                                 SqlSyntax.GetQuotedName(Index.Name),
+                                 SqlSyntax.GetQuotedTableName(Index.TableName));
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/Expressions/DeleteTableExpression.cs

@@ -4,11 +4,9 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 {
     public class DeleteTableExpression : MigrationExpressionBase
     {
-        public DeleteTableExpression()
-        {
-        }
-
-        public DeleteTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        
+        public DeleteTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax) 
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
@@ -17,8 +15,8 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete.Expressions
 
         public override string ToString()
         {
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.DropTable,
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName));
+            return string.Format(SqlSyntax.DropTable,
+                                 SqlSyntax.GetQuotedTableName(TableName));
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Delete/IDeleteBuilder.cs

@@ -12,7 +12,6 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Delete
         void Table(string tableName);
         IDeleteColumnFromTableSyntax Column(string columnName);
         IDeleteForeignKeyFromTableSyntax ForeignKey();
-        [Obsolete("Do not use this construct as it does not work with MySql, use the syntax: Delete.ForeignKey().FromTable(\"umbracoUser2app\").ForeignColumn(... instead")]
         IDeleteForeignKeyOnTableSyntax ForeignKey(string foreignKeyName);
         IDeleteDataSyntax FromTable(string tableName);
         IDeleteIndexForTableSyntax Index();

src/Umbraco.Core/Persistence/Migrations/Syntax/Execute/ExecuteBuilder.cs

@@ -1,34 +1,31 @@
 using System;
 using Umbraco.Core.Persistence.Migrations.Syntax.Execute.Expressions;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Execute
 {
     public class ExecuteBuilder : IExecuteBuilder
     {
         private readonly IMigrationContext _context;
+        private readonly ISqlSyntaxProvider _sqlSyntax;
         private readonly DatabaseProviders[] _databaseProviders;
 
-        public ExecuteBuilder(IMigrationContext context, params DatabaseProviders[] databaseProviders)
+        public ExecuteBuilder(IMigrationContext context, ISqlSyntaxProvider sqlSyntax, params DatabaseProviders[] databaseProviders)
         {
             _context = context;
+            _sqlSyntax = sqlSyntax;
             _databaseProviders = databaseProviders;
         }
 
         public void Sql(string sqlStatement)
         {
-            var expression = _databaseProviders == null
-                                 ? new ExecuteSqlStatementExpression {SqlStatement = sqlStatement}
-                                 : new ExecuteSqlStatementExpression(_context.CurrentDatabaseProvider,
-                                                                     _databaseProviders) {SqlStatement = sqlStatement};
+            var expression = new ExecuteSqlStatementExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) {SqlStatement = sqlStatement};
             _context.Expressions.Add(expression);
         }
 
         public void Code(Func<Database, string> codeStatement)
         {
-            var expression = _databaseProviders == null
-                                 ? new ExecuteCodeStatementExpression { CodeStatement = codeStatement }
-                                 : new ExecuteCodeStatementExpression(_context.CurrentDatabaseProvider,
-                                                                     _databaseProviders) { CodeStatement = codeStatement };
+            var expression = new ExecuteCodeStatementExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { CodeStatement = codeStatement };
             _context.Expressions.Add(expression);
         }
     }

src/Umbraco.Core/Persistence/Migrations/Syntax/Execute/Expressions/ExecuteCodeStatementExpression.cs

@@ -1,15 +1,12 @@
 using System;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Execute.Expressions
 {
     public class ExecuteCodeStatementExpression : MigrationExpressionBase
     {
-        public ExecuteCodeStatementExpression()
-        {
-        }
-
-        public ExecuteCodeStatementExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
+        public ExecuteCodeStatementExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 

src/Umbraco.Core/Persistence/Migrations/Syntax/Execute/Expressions/ExecuteSqlStatementExpression.cs

@@ -1,12 +1,12 @@
-namespace Umbraco.Core.Persistence.Migrations.Syntax.Execute.Expressions
+using Umbraco.Core.Persistence.SqlSyntax;
+
+namespace Umbraco.Core.Persistence.Migrations.Syntax.Execute.Expressions
 {
     public class ExecuteSqlStatementExpression : MigrationExpressionBase
     {
-        public ExecuteSqlStatementExpression()
-        {
-        }
 
-        public ExecuteSqlStatementExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        public ExecuteSqlStatementExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 

src/Umbraco.Core/Persistence/Migrations/Syntax/Expressions/CreateColumnExpression.cs

@@ -5,20 +5,16 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Expressions
 {
     public class CreateColumnExpression : MigrationExpressionBase
     {
-        public CreateColumnExpression()
+
+        public CreateColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
             Column = new ColumnDefinition { ModificationType = ModificationType.Create };
         }
 
-        public CreateColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
-        {
-            Column = new ColumnDefinition { ModificationType = ModificationType.Create };
-        }
-
-        public virtual string SchemaName { get; set; }
-        public virtual string TableName { get; set; }
-        public virtual ColumnDefinition Column { get; set; }
+        public string SchemaName { get; set; }
+        public string TableName { get; set; }
+        public ColumnDefinition Column { get; set; }
 
         public override string ToString()
         {
@@ -28,9 +24,9 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Expressions
             if (string.IsNullOrEmpty(Column.TableName))
                 Column.TableName = TableName;
 
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.AddColumn,
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(Column.TableName),
-                                 SqlSyntaxContext.SqlSyntaxProvider.Format(Column));
+            return string.Format(SqlSyntax.AddColumn,
+                                 SqlSyntax.GetQuotedTableName(Column.TableName),
+                                 SqlSyntax.Format(Column));
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Expressions/CreateForeignKeyExpression.cs

@@ -5,25 +5,26 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Expressions
 {
     public class CreateForeignKeyExpression : MigrationExpressionBase
     {
-        public CreateForeignKeyExpression()
+        public CreateForeignKeyExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax, ForeignKeyDefinition fkDef)
+            : base(current, databaseProviders, sqlSyntax)
+        {
+            ForeignKey = fkDef;
+        }
+
+        public CreateForeignKeyExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
             ForeignKey = new ForeignKeyDefinition();
         }
 
-        public CreateForeignKeyExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
-        {
-            ForeignKey = new ForeignKeyDefinition();
-        }
-
-        public virtual ForeignKeyDefinition ForeignKey { get; set; }
+        public ForeignKeyDefinition ForeignKey { get; set; }
 
         public override string ToString()
         {
             if (IsExpressionSupported() == false)
                 return string.Empty;
 
-            return SqlSyntaxContext.SqlSyntaxProvider.Format(ForeignKey);
+            return SqlSyntax.Format(ForeignKey);
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Expressions/CreateIndexExpression.cs

@@ -6,32 +6,20 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Expressions
 {
     public class CreateIndexExpression : MigrationExpressionBase
     {
-        public CreateIndexExpression(ISqlSyntaxProvider sqlSyntax)
-            : base(sqlSyntax)
+
+        public CreateIndexExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax, IndexDefinition index)
+            : base(current, databaseProviders, sqlSyntax)
         {
-            Index = new IndexDefinition();
+            Index = index;
         }
-        
+
         public CreateIndexExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
             : base(current, databaseProviders, sqlSyntax)
         {
             Index = new IndexDefinition();
         }
-
-        [Obsolete("Use alternate ctor specifying ISqlSyntaxProvider instead")]
-        public CreateIndexExpression()
-            : this(SqlSyntaxContext.SqlSyntaxProvider)
-        {
-
-        }
-
-        [Obsolete("Use alternate ctor specifying ISqlSyntaxProvider instead")]
-        public CreateIndexExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : this(current, databaseProviders, SqlSyntaxContext.SqlSyntaxProvider)
-        {
-        }
-
-        public virtual IndexDefinition Index { get; set; }
+        
+        public IndexDefinition Index { get; set; }
 
         public override string ToString()
         {

src/Umbraco.Core/Persistence/Migrations/Syntax/IfDatabase/IfDatabaseBuilder.cs

@@ -3,43 +3,46 @@ using Umbraco.Core.Persistence.Migrations.Syntax.Delete;
 using Umbraco.Core.Persistence.Migrations.Syntax.Execute;
 using Umbraco.Core.Persistence.Migrations.Syntax.Rename;
 using Umbraco.Core.Persistence.Migrations.Syntax.Update;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.IfDatabase
 {
     public class IfDatabaseBuilder : IIfDatabaseBuilder
     {
         private readonly IMigrationContext _context;
+        private readonly ISqlSyntaxProvider _sqlSyntax;
         private readonly DatabaseProviders[] _databaseProviders;
 
-        public IfDatabaseBuilder(IMigrationContext context, params DatabaseProviders[] databaseProviders)
+        public IfDatabaseBuilder(IMigrationContext context, ISqlSyntaxProvider sqlSyntax, params DatabaseProviders[] databaseProviders)
         {
             _context = context;
+            _sqlSyntax = sqlSyntax;
             _databaseProviders = databaseProviders;
         }
 
         public ICreateBuilder Create
         {
-            get { return new CreateBuilder(_context, _databaseProviders); }
+            get { return new CreateBuilder(_context, _sqlSyntax, _databaseProviders); }
         }
 
         public IExecuteBuilder Execute
         {
-            get { return new ExecuteBuilder(_context, _databaseProviders); }
+            get { return new ExecuteBuilder(_context, _sqlSyntax, _databaseProviders); }
         }
 
         public IDeleteBuilder Delete
         {
-            get { return new DeleteBuilder(_context, _databaseProviders); }
+            get { return new DeleteBuilder(_context, _sqlSyntax, _databaseProviders); }
         }
 
         public IRenameBuilder Rename
         {
-            get { return new RenameBuilder(_context, _databaseProviders); }
+            get { return new RenameBuilder(_context, _sqlSyntax, _databaseProviders); }
         }
 
         public IUpdateBuilder Update
         {
-            get { return new UpdateBuilder(_context, _databaseProviders); }
+            get { return new UpdateBuilder(_context, _sqlSyntax, _databaseProviders); }
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Insert/Expressions/InsertDataExpression.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Text;
 using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.SqlSyntax;
 
@@ -8,56 +9,76 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Insert.Expressions
     public class InsertDataExpression : MigrationExpressionBase
     {
         private readonly List<InsertionDataDefinition> _rows = new List<InsertionDataDefinition>();
-
-        public InsertDataExpression()
-        {
-        }
-
-        public InsertDataExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        
+        public InsertDataExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax) 
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
         public string SchemaName { get; set; }
         public string TableName { get; set; }
+        public bool EnabledIdentityInsert { get; set; }
 
-       
         public List<InsertionDataDefinition> Rows
         {
             get { return _rows; }
         }
-
         
-
         public override string ToString()
         {
-            //TODO: This works for single insertion entries, not sure if it is valid for bulk insert operations!!!
-
             if (IsExpressionSupported() == false)
                 return string.Empty;
-
-            var insertItems = new List<string>();
             
-            foreach (var item in Rows)
+            var sb = new StringBuilder();
+
+            if (EnabledIdentityInsert && SqlSyntax.SupportsIdentityInsert())
             {
-                var cols = "";
-                var vals = "";
-                foreach (var keyVal in item)
+                sb.AppendLine(string.Format("SET IDENTITY_INSERT {0} ON;", SqlSyntax.GetQuotedTableName(TableName)));
+                if (CurrentDatabaseProvider == DatabaseProviders.SqlServer || CurrentDatabaseProvider == DatabaseProviders.SqlServerCE)
                 {
-                    cols += keyVal.Key + ",";
-                    vals += GetQuotedValue(keyVal.Value) + ",";
+                    sb.AppendLine("GO");
                 }
-                cols = cols.TrimEnd(',');
-                vals = vals.TrimEnd(',');
-
-
-                var sql = string.Format(SqlSyntaxContext.SqlSyntaxProvider.InsertData,
-                              SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName),
-                              cols, vals);
-                
-                insertItems.Add(sql);
             }
 
-            return string.Join(",", insertItems);
+            try
+            {
+                foreach (var item in Rows)
+                {
+                    var cols = "";
+                    var vals = "";
+                    foreach (var keyVal in item)
+                    {
+                        cols += SqlSyntax.GetQuotedColumnName(keyVal.Key) + ",";
+                        vals += GetQuotedValue(keyVal.Value) + ",";
+                    }
+                    cols = cols.TrimEnd(',');
+                    vals = vals.TrimEnd(',');
+
+
+                    var sql = string.Format(SqlSyntax.InsertData,
+                                  SqlSyntax.GetQuotedTableName(TableName),
+                                  cols, vals);
+
+                    sb.AppendLine(string.Format("{0};", sql));
+                    if (CurrentDatabaseProvider == DatabaseProviders.SqlServer || CurrentDatabaseProvider == DatabaseProviders.SqlServerCE)
+                    {
+                        sb.AppendLine("GO");
+                    }
+                }
+            }
+            finally
+            {
+                if (EnabledIdentityInsert && SqlSyntax.SupportsIdentityInsert())
+                {
+                    sb.AppendLine(string.Format("SET IDENTITY_INSERT {0} OFF;", SqlSyntax.GetQuotedTableName(TableName)));
+                    if (CurrentDatabaseProvider == DatabaseProviders.SqlServer || CurrentDatabaseProvider == DatabaseProviders.SqlServerCE)
+                    {
+                        sb.AppendLine("GO");
+                    }
+                }
+            }
+
+            return sb.ToString();
         }
 
         

src/Umbraco.Core/Persistence/Migrations/Syntax/Insert/IInsertDataSyntax.cs

@@ -2,6 +2,7 @@
 {
     public interface IInsertDataSyntax : IFluentSyntax
     {
+        IInsertDataSyntax EnableIdentityInsert();
         IInsertDataSyntax Row(object dataAsAnonymousType);
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Insert/InsertBuilder.cs

@@ -1,19 +1,24 @@
 using Umbraco.Core.Persistence.Migrations.Syntax.Insert.Expressions;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Insert
 {
     public class InsertBuilder : IInsertBuilder
     {
         private readonly IMigrationContext _context;
+        private readonly ISqlSyntaxProvider _sqlSyntax;
+        private readonly DatabaseProviders[] _databaseProviders;
 
-        public InsertBuilder(IMigrationContext context)
+        public InsertBuilder(IMigrationContext context, ISqlSyntaxProvider sqlSyntax, params DatabaseProviders[] databaseProviders)
         {
             _context = context;
+            _sqlSyntax = sqlSyntax;
+            _databaseProviders = databaseProviders;
         }
 
         public IInsertDataSyntax IntoTable(string tableName)
         {
-            var expression = new InsertDataExpression { TableName = tableName };
+            var expression = new InsertDataExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { TableName = tableName };
             _context.Expressions.Add(expression);
             return new InsertDataBuilder(expression);
         }

src/Umbraco.Core/Persistence/Migrations/Syntax/Insert/InsertDataBuilder.cs

@@ -14,6 +14,12 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Insert
             _expression = expression;
         }
 
+        public IInsertDataSyntax EnableIdentityInsert()
+        {
+            _expression.EnabledIdentityInsert = true;
+            return this;
+        }
+
         public IInsertDataSyntax Row(object dataAsAnonymousType)
         {
             _expression.Rows.Add(GetData(dataAsAnonymousType));

src/Umbraco.Core/Persistence/Migrations/Syntax/Rename/Expressions/RenameColumnExpression.cs

@@ -3,13 +3,9 @@
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Rename.Expressions
 {
     public class RenameColumnExpression : MigrationExpressionBase
-    {
-        public RenameColumnExpression()
-        {
-        }
-
-        public RenameColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
+    {        
+        public RenameColumnExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
@@ -52,7 +48,7 @@ SELECT CONCAT(
             if (IsExpressionSupported() == false)
                 return string.Empty;
 
-            return SqlSyntaxContext.SqlSyntaxProvider.FormatColumnRename(TableName, OldName, NewName);
+            return SqlSyntax.FormatColumnRename(TableName, OldName, NewName);
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Rename/Expressions/RenameTableExpression.cs

@@ -4,12 +4,8 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Rename.Expressions
 {
     public class RenameTableExpression : MigrationExpressionBase
     {
-        public RenameTableExpression()
-        {
-        }
-
-        public RenameTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders)
-            : base(current, databaseProviders)
+        public RenameTableExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax)
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
@@ -22,7 +18,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Rename.Expressions
             if (IsExpressionSupported() == false)
                 return string.Empty;
             
-            return SqlSyntaxContext.SqlSyntaxProvider.FormatTableRename(OldName, NewName);
+            return SqlSyntax.FormatTableRename(OldName, NewName);
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Syntax/Rename/RenameBuilder.cs

@@ -1,34 +1,33 @@
 using Umbraco.Core.Persistence.Migrations.Syntax.Rename.Column;
 using Umbraco.Core.Persistence.Migrations.Syntax.Rename.Expressions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Rename.Table;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Rename
 {
     public class RenameBuilder : IRenameBuilder
     {
         private readonly IMigrationContext _context;
+        private readonly ISqlSyntaxProvider _sqlSyntax;
         private readonly DatabaseProviders[] _databaseProviders;
 
-        public RenameBuilder(IMigrationContext context, params DatabaseProviders[] databaseProviders)
+        public RenameBuilder(IMigrationContext context, ISqlSyntaxProvider sqlSyntax, params DatabaseProviders[] databaseProviders)
         {
             _context = context;
+            _sqlSyntax = sqlSyntax;
             _databaseProviders = databaseProviders;
         }
 
         public IRenameTableSyntax Table(string oldName)
         {
-            var expression = _databaseProviders == null
-                                 ? new RenameTableExpression {OldName = oldName}
-                                 : new RenameTableExpression(_context.CurrentDatabaseProvider, _databaseProviders) { OldName = oldName };
+            var expression = new RenameTableExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { OldName = oldName };
             _context.Expressions.Add(expression);
             return new RenameTableBuilder(expression);
         }
 
         public IRenameColumnTableSyntax Column(string oldName)
         {
-            var expression = _databaseProviders == null
-                                 ? new RenameColumnExpression {OldName = oldName}
-                                 : new RenameColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders) { OldName = oldName };
+            var expression = new RenameColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { OldName = oldName };
             _context.Expressions.Add(expression);
             return new RenameColumnBuilder(expression);
         }

src/Umbraco.Core/Persistence/Migrations/Syntax/Update/Expressions/UpdateDataExpression.cs

@@ -5,11 +5,8 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Update.Expressions
 {
     public class UpdateDataExpression : MigrationExpressionBase
     {
-        public UpdateDataExpression()
-        {
-        }
-
-        public UpdateDataExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders) : base(current, databaseProviders)
+        public UpdateDataExpression(DatabaseProviders current, DatabaseProviders[] databaseProviders, ISqlSyntaxProvider sqlSyntax) 
+            : base(current, databaseProviders, sqlSyntax)
         {
         }
 
@@ -31,7 +28,7 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Update.Expressions
             foreach (var item in Set)
             {
                 updateItems.Add(string.Format("{0} = {1}",
-                                              SqlSyntaxContext.SqlSyntaxProvider.GetQuotedColumnName(item.Key),
+                                              SqlSyntax.GetQuotedColumnName(item.Key),
                                               GetQuotedValue(item.Value)));
             }
 
@@ -44,13 +41,13 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Update.Expressions
                 foreach (var item in Where)
                 {
                     whereClauses.Add(string.Format("{0} {1} {2}",
-                                                   SqlSyntaxContext.SqlSyntaxProvider.GetQuotedColumnName(item.Key),
+                                                   SqlSyntax.GetQuotedColumnName(item.Key),
                                                    item.Value == null ? "IS" : "=",
                                                    GetQuotedValue(item.Value)));
                 }
             }
-            return string.Format(SqlSyntaxContext.SqlSyntaxProvider.UpdateData,
-                                 SqlSyntaxContext.SqlSyntaxProvider.GetQuotedTableName(TableName),
+            return string.Format(SqlSyntax.UpdateData,
+                                 SqlSyntax.GetQuotedTableName(TableName),
                                  string.Join(", ", updateItems.ToArray()), 
                                  string.Join(" AND ", whereClauses.ToArray()));
         }

src/Umbraco.Core/Persistence/Migrations/Syntax/Update/UpdateBuilder.cs

@@ -1,23 +1,24 @@
 using Umbraco.Core.Persistence.Migrations.Syntax.Update.Expressions;
+using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Syntax.Update
 {
     public class UpdateBuilder : IUpdateBuilder
     {
         private readonly IMigrationContext _context;
+        private readonly ISqlSyntaxProvider _sqlSyntax;
         private readonly DatabaseProviders[] _databaseProviders;
 
-        public UpdateBuilder(IMigrationContext context, params DatabaseProviders[] databaseProviders)
+        public UpdateBuilder(IMigrationContext context, ISqlSyntaxProvider sqlSyntax, params DatabaseProviders[] databaseProviders)
         {
             _context = context;
+            _sqlSyntax = sqlSyntax;
             _databaseProviders = databaseProviders;
         }
 
         public IUpdateSetSyntax Table(string tableName)
         {
-            var expression = _databaseProviders == null 
-                ? new UpdateDataExpression { TableName = tableName }
-                : new UpdateDataExpression(_context.CurrentDatabaseProvider, _databaseProviders) { TableName = tableName };
+            var expression = new UpdateDataExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) { TableName = tableName };
             _context.Expressions.Add(expression);
             return new UpdateDataBuilder(expression, _context);
         }

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSeven/AddIndexToCmsMacroTable.cs

@@ -3,6 +3,7 @@ using System.CodeDom;
 using System.Linq;
 using Umbraco.Core.Configuration;
 using Umbraco.Core.Logging;
+using Umbraco.Core.Models.Rdbms;
 using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.SqlSyntax;
 
@@ -14,12 +15,12 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSeven
     [Migration("7.0.0", 4, GlobalSettings.UmbracoMigrationName)]
     public class AddIndexToCmsMacroTable : MigrationBase
     {
-        private readonly bool _skipIndexCheck;
+        private readonly bool _forTesting;
 
-        internal AddIndexToCmsMacroTable(bool skipIndexCheck, ISqlSyntaxProvider sqlSyntax, ILogger logger)
+        internal AddIndexToCmsMacroTable(bool forTesting, ISqlSyntaxProvider sqlSyntax, ILogger logger)
             : base(sqlSyntax, logger)
         {
-            _skipIndexCheck = skipIndexCheck;
+            _forTesting = forTesting;
         }
 
         public AddIndexToCmsMacroTable(ISqlSyntaxProvider sqlSyntax, ILogger logger) : base(sqlSyntax, logger)
@@ -28,7 +29,7 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSeven
 
         public override void Up()
         {
-            var dbIndexes = _skipIndexCheck ? new DbIndexDefinition[] { } : SqlSyntax.GetDefinedIndexes(Context.Database)
+            var dbIndexes = _forTesting ? new DbIndexDefinition[] { } : SqlSyntax.GetDefinedIndexes(Context.Database)
                 .Select(x => new DbIndexDefinition()
                 {
                     TableName = x.Item1,
@@ -40,6 +41,30 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSeven
             //make sure it doesn't already exist
             if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_cmsMacro_Alias")) == false)
             {
+                //in order to create this index, we need to ensure that there are no duplicates. This could have happened with very old/corrupt umbraco versions.
+                // So we'll remove any duplicates based on alias and only keep the one with the smallest id since I'm pretty sure we'd always choose the 'first' one
+                // when running a query.
+
+                if (_forTesting == false)
+                {
+                    //NOTE: Using full SQL statement here in case the DTO has changed between versions
+                    var macros = Context.Database.Fetch<MacroDto>("SELECT * FROM cmsMacro")
+                        .GroupBy(x => x.Alias)
+                        .Where(x => x.Count() > 1);
+
+                    foreach (var m in macros)
+                    {
+                        //get the min id (to keep)
+                        var minId = m.Min(x => x.Id);
+                        //delete all the others
+                        foreach (var macroDto in m.Where(x => x.Id != minId))
+                        {
+                            Delete.FromTable("cmsMacro").Row(new { id = macroDto.Id });
+                        }
+                    }
+                }
+                
+
                 Create.Index("IX_cmsMacro_Alias").OnTable("cmsMacro").OnColumn("macroAlias").Unique();            
             }
             

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSeven/AlterTagsTable.cs

@@ -27,6 +27,11 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSeven
                 }).ToArray();
             
             //add a foreign key to the parent id column too!
+
+            //In some cases in very old corrupted db's this will fail, so it means we need to clean the data first
+            //set the parentID to NULL where it doesn't actually exist in the normal ids
+            Execute.Sql(@"UPDATE cmsTags SET parentId = NULL WHERE parentId IS NOT NULL AND parentId NOT IN (SELECT id FROM cmsTags)");
+
             Create.ForeignKey("FK_cmsTags_cmsTags")
                   .FromTable("cmsTags")
                   .ForeignColumn("ParentId")

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSeven/UpdateRelatedLinksData.cs

@@ -55,9 +55,11 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSeven
                 }
 
                 var propertyTypeIds = propertyData.Select(x => x.PropertyTypeId).Distinct();
-                var propertyTypes = database.Fetch<PropertyTypeDto>(
-                    "WHERE id in (@propertyTypeIds)", new { propertyTypeIds = propertyTypeIds });
 
+                //NOTE: We are writing the full query because we've added a column to the PropertyTypeDto in later versions so one of the columns
+                // won't exist yet
+                var propertyTypes = database.Fetch<PropertyTypeDto>("SELECT * FROM cmsPropertyType WHERE id in (@propertyTypeIds)", new { propertyTypeIds = propertyTypeIds });
+            
                 foreach (var data in propertyData)
                 {
                     if (string.IsNullOrEmpty(data.Text) == false)

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSevenThreeZero/AddForeignKeysForLanguageAndDictionaryTables.cs

@@ -3,6 +3,8 @@ using System.Data;
 using System.Linq;
 using Umbraco.Core.Configuration;
 using Umbraco.Core.Logging;
+using Umbraco.Core.Models.Rdbms;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZero
@@ -30,6 +32,53 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
                     Delete.FromTable("cmsLanguageText").Row(new { pk = pk });
                 }
 
+                var columns = SqlSyntax.GetColumnsInSchema(Context.Database).Distinct().ToArray();
+
+                if (columns.Any(x => x.ColumnName.InvariantEquals("id") 
+                    && x.TableName.InvariantEquals("umbracoLanguage") 
+                    && x.DataType.InvariantEquals("smallint")))
+                {
+                    //Ensure that the umbracoLanguage PK is INT and not SmallInt (which it  might be in older db versions)
+                    // In order to 'change' this to an INT, we have to run a full migration script which is super annoying
+                    Create.Table("umbracoLanguage_TEMP")
+                        .WithColumn("id").AsInt32().NotNullable().Identity()
+                        .WithColumn("languageISOCode").AsString(10).Nullable()
+                        .WithColumn("languageCultureName").AsString(50).Nullable();
+                
+                    var currentData = this.Context.Database.Fetch<LanguageDto>(new Sql().Select("*").From<LanguageDto>(SqlSyntax));
+                    foreach (var languageDto in currentData)
+                    {
+                        Insert.IntoTable("umbracoLanguage_TEMP")
+                            .EnableIdentityInsert()
+                            .Row(new {id = languageDto.Id, languageISOCode = languageDto.IsoCode, languageCultureName = languageDto.CultureName});
+                    }
+                    
+                    //ok, all data has been copied over, drop the old table, rename the temp table and re-add constraints.
+                    Delete.Table("umbracoLanguage");
+                    Rename.Table("umbracoLanguage_TEMP").To("umbracoLanguage");
+
+                    //add the pk
+                    Create.PrimaryKey("PK_language").OnTable("umbracoLanguage").Column("id");
+                }
+
+                var dbIndexes = SqlSyntax.GetDefinedIndexes(Context.Database)
+                    .Select(x => new DbIndexDefinition
+                    {
+                        TableName = x.Item1,
+                        IndexName = x.Item2,
+                        ColumnName = x.Item3,
+                        IsUnique = x.Item4
+                    }).ToArray();
+
+                //make sure it doesn't already exist
+                if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_cmsDictionary_id")) == false)
+                {
+                    Create.Index("IX_cmsDictionary_id").OnTable("cmsDictionary")
+                        .OnColumn("id").Ascending()
+                        .WithOptions().NonClustered()
+                        .WithOptions().Unique();
+                }
+
                 //now we need to create a foreign key
                 Create.ForeignKey("FK_cmsLanguageText_umbracoLanguage_id").FromTable("cmsLanguageText").ForeignColumn("languageId")
                     .ToTable("umbracoLanguage").PrimaryColumn("id").OnDeleteOrUpdate(Rule.None);
@@ -52,7 +101,7 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
 
         public override void Down()
         {
-            throw new System.NotImplementedException();
+            throw new NotImplementedException();
         }
     }
 }

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSevenThreeZero/AddServerRegistrationColumnsAndLock.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Linq;
+using Umbraco.Core.Configuration;
+using Umbraco.Core.Logging;
+using Umbraco.Core.Models.Rdbms;
+using Umbraco.Core.Persistence.SqlSyntax;
+
+namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZero
+{
+    [Migration("7.3.0", 17, GlobalSettings.UmbracoMigrationName)]
+    public class AddServerRegistrationColumnsAndLock : MigrationBase
+    {
+        public AddServerRegistrationColumnsAndLock(ISqlSyntaxProvider sqlSyntax, ILogger logger)
+            : base(sqlSyntax, logger)
+        { }
+
+        public override void Up()
+        {
+            // don't execute if the column is already there
+            var columns = SqlSyntax.GetColumnsInSchema(Context.Database).ToArray();
+            if (columns.Any(x => x.TableName.InvariantEquals("umbracoServer") && x.ColumnName.InvariantEquals("isMaster")) == false)
+            {
+                Create.Column("isMaster").OnTable("umbracoServer").AsBoolean().NotNullable().WithDefaultValue(0);
+            }
+
+            EnsureLockObject(Constants.System.ServersLock, "0AF5E610-A310-4B6F-925F-E928D5416AF7", "LOCK: Servers");
+        }
+
+        public override void Down()
+        {
+            // not implemented
+        }
+
+        private void EnsureLockObject(int id, string uniqueId, string text)
+        {
+            var exists = Context.Database.Exists<NodeDto>(id);
+            if (exists) return;
+
+            Insert
+                .IntoTable("umbracoNode")
+                .EnableIdentityInsert()
+                .Row(new
+                {
+                    id = id, // NodeId
+                    trashed = false,
+                    parentId = -1,
+                    nodeUser = 0,
+                    level = 1,
+                    path = "-1," + id,
+                    sortOrder = 0,
+                    uniqueId = new Guid(uniqueId),
+                    text = text,
+                    nodeObjectType = new Guid(Constants.ObjectTypes.LockObject),
+                    createDate = DateTime.Now
+                });
+        }
+    }
+}

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSevenThreeZero/AddUniqueIdPropertyTypeColumn.cs

@@ -6,6 +6,7 @@ using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZero
 {
+    
     [Migration("7.3.0", 13, GlobalSettings.UmbracoMigrationName)]
     public class AddUniqueIdPropertyTypeColumn : MigrationBase
     {
@@ -35,13 +36,17 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
                 // the already existing data, see: http://issues.umbraco.org/issue/U4-6942
 
                 foreach (var data in Context.Database.Query<dynamic>(@"
-SELECT cmsPropertyType.id ptId, cmsPropertyType.Alias ptAlias, cmsContentType.alias ctAlias
+SELECT cmsPropertyType.id ptId, cmsPropertyType.Alias ptAlias, cmsContentType.alias ctAlias, umbracoNode.nodeObjectType nObjType
 FROM cmsPropertyType
 INNER JOIN cmsContentType
-ON cmsPropertyType.contentTypeId = cmsContentType.nodeId"))
+ON cmsPropertyType.contentTypeId = cmsContentType.nodeId
+INNER JOIN umbracoNode
+ON cmsContentType.nodeId = umbracoNode.id"))
                 {
-                    //create a guid from the concatenation of the property type alias + the doc type alias
-                    string concatAlias = data.ptAlias + data.ctAlias;
+                    //create a guid from the concatenation of the:
+                    // property type alias + the doc type alias + the content type node object type
+                    // - the latter is required because there can be a content type and media type with the same alias!!
+                    string concatAlias = data.ptAlias + data.ctAlias + data.nObjType;
                     var ptGuid = concatAlias.ToGuid();
 
                     //set the Unique Id to the one we've generated

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSevenThreeZero/CleanUpCorruptedPublishedFlags.cs

@@ -0,0 +1,49 @@
+using System.Linq;
+using Umbraco.Core.Configuration;
+using Umbraco.Core.Logging;
+using Umbraco.Core.Models.Rdbms;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
+using Umbraco.Core.Persistence.SqlSyntax;
+
+namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZero
+{
+    /// <summary>
+    /// Older corrupted dbs might have multiple published flags for a content item, this shouldn't be possible
+    /// so we need to clear the content flag on the older version
+    /// </summary>
+    [Migration("7.3.0", 18, GlobalSettings.UmbracoMigrationName)]
+    public class CleanUpCorruptedPublishedFlags : MigrationBase
+    {
+        public CleanUpCorruptedPublishedFlags(ISqlSyntaxProvider sqlSyntax, ILogger logger)
+            : base(sqlSyntax, logger)
+        {
+        }
+        
+        public override void Up()
+        {
+            //Get all cmsDocument items that have more than one published date set
+            var sql = @"SELECT * FROM cmsDocument WHERE nodeId IN 
+(SELECT nodeId
+FROM cmsDocument
+GROUP BY nodeId
+HAVING SUM(CASE WHEN published = 0 THEN 0 ELSE 1 END) > 1)
+AND published = 1
+ORDER BY nodeId, updateDate";
+
+            var docs = Context.Database.Fetch<DocumentDto>(sql).GroupBy(x => x.NodeId);
+
+            foreach (var doc in docs)
+            {
+                var latest = doc.OrderByDescending(x => x.UpdateDate).First();
+                foreach (var old in doc.Where(x => x.VersionId != latest.VersionId))
+                {
+                    Update.Table("cmsDocument").Set(new {published = 0}).Where(new {nodeId = old.NodeId});
+                }
+            }
+        }
+
+        public override void Down()
+        {
+        }
+    }
+}

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSevenThreeZero/CreateCacheInstructionTable.cs

@@ -28,14 +28,11 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
             var textType = SqlSyntax.GetSpecialDbType(SpecialDbTypes.NTEXT);
 
             Create.Table("umbracoCacheInstruction")
-                .WithColumn("id").AsInt32().Identity().NotNullable()
+                .WithColumn("id").AsInt32().NotNullable().PrimaryKey("PK_umbracoCacheInstruction").Identity()
                 .WithColumn("utcStamp").AsDateTime().NotNullable()
                 .WithColumn("jsonInstruction").AsCustom(textType).NotNullable()
                 .WithColumn("originated").AsString(500).NotNullable();
-
-            Create.PrimaryKey("PK_umbracoCacheInstruction")
-                .OnTable("umbracoCacheInstruction")
-                .Column("id");
+            
         }
 
         public override void Down()

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSevenThreeZero/MigrateAndRemoveTemplateMasterColumn.cs

@@ -3,6 +3,7 @@ using System.Linq;
 using Umbraco.Core.Configuration;
 using Umbraco.Core.Logging;
 using Umbraco.Core.Models.Rdbms;
+using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.SqlSyntax;
 
 namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZero
@@ -23,34 +24,92 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
         {
 
             //Don't execute anything if there is no 'master' column - this might occur if the db is already upgraded
-            var cols = SqlSyntax.GetColumnsInSchema(Context.Database);
+            var cols = SqlSyntax.GetColumnsInSchema(Context.Database).ToArray();
             if (cols.Any(x => x.ColumnName.InvariantEquals("master") && x.TableName.InvariantEquals("cmsTemplate")) == false)
             {
                 return;
             }
+            
+            var constraints = SqlSyntax.GetConstraintsPerColumn(Context.Database).Distinct().ToArray();
 
             //update the parentId column for all templates to be correct so it matches the current 'master' template
-            //NOTE: we are using dynamic because we need to get the data in a column that no longer exists in the schema
-            var templates = Context.Database.Fetch<dynamic>(new Sql().Select("*").From<TemplateDto>());
-            foreach (var template in templates)
-            {
-                Update.Table("umbracoNode").Set(new {parentID = template.master ?? -1}).Where(new {id = template.nodeId});
 
-                //now build the correct path for the template
-                Update.Table("umbracoNode").Set(new { path = BuildPath (template, templates)}).Where(new { id = template.nodeId });
-                
-            }
+            //In some old corrupted databases, the information will not be correct in the master column so we need to fix that
+            //first by nulling out the master column where the id doesn't actually exist
+            Execute.Sql(@"UPDATE cmsTemplate SET master = NULL WHERE " + 
+                SqlSyntax.GetQuotedColumnName("master") + @" IS NOT NULL AND " + 
+                SqlSyntax.GetQuotedColumnName("master") + @" NOT IN (" +
+                //Stupid MySQL... needs this stupid syntax because it can do an update with a sub query of itself,
+                // yet it can do one with a sub sub query
+                // ... this will work in all dbs too
+                @"SELECT nodeId FROM (SELECT * FROM cmsTemplate a) b)");
+
+            //Now we can bulk update the parentId column
+
+            //NOTE: This single statement should be used but stupid SQLCE doesn't support Update with a FROM !!
+            // so now we have to do this by individual rows :(
+                    //Execute.Sql(@"UPDATE umbracoNode
+                    //SET parentID = COALESCE(t2." + SqlSyntax.GetQuotedColumnName("master")  +  @", -1)
+                    //FROM umbracoNode t1
+                    //INNER JOIN cmsTemplate t2
+                    //ON t1.id = t2.nodeId");
+            Execute.Code(database =>
+            {
+                var templateData = database.Fetch<dynamic>("SELECT * FROM cmsTemplate");
+
+                foreach (var template in templateData)
+                {
+                    var sql = "SET parentID=@parentId WHERE id=@nodeId";
+
+                    LogHelper.Info<MigrateAndRemoveTemplateMasterColumn>("Executing sql statement: UPDATE umbracoNode " + sql);
+
+                    database.Update<NodeDto>(sql,
+                        new {parentId = template.master ?? -1, nodeId = template.nodeId});
+                }
+
+                return string.Empty;
+            });
+
+            //Now we can update the path, but this needs to be done in a delegate callback so that the query runs after the updates just completed
+            Execute.Code(database =>
+            {
+                //NOTE: we are using dynamic because we need to get the data in a column that no longer exists in the schema
+                var templates = database.Fetch<dynamic>(new Sql().Select("*").From<TemplateDto>());
+                foreach (var template in templates)
+                {
+                    var sql = string.Format(SqlSyntax.UpdateData,
+                        SqlSyntax.GetQuotedTableName("umbracoNode"),
+                        "path=@buildPath",
+                        "id=@nodeId");
+
+                    LogHelper.Info<MigrateAndRemoveTemplateMasterColumn>("Executing sql statement: " + sql);
+
+                    //now build the correct path for the template
+                    database.Execute(sql, new
+                    {
+                        buildPath = BuildPath(template, templates),
+                        nodeId = template.nodeId
+                    });
+                }
+
+                return string.Empty;
+            });
+
+            
 
             //now remove the master column and key
             if (this.Context.CurrentDatabaseProvider == DatabaseProviders.MySql)
             {
-                Delete.ForeignKey().FromTable("cmsTemplate").ForeignColumn("master").ToTable("umbracoUser").PrimaryColumn("id");
+                //Because MySQL doesn't name keys with what you want, we need to query for the one that is associated
+                // this is required for this specific case because there are 2 foreign keys on the cmsTemplate table
+                var fkName = constraints.FirstOrDefault(x => x.Item1.InvariantEquals("cmsTemplate") && x.Item2.InvariantEquals("master"));
+                if (fkName != null)
+                {
+                    Delete.ForeignKey(fkName.Item3).OnTable("cmsTemplate");
+                }
             }
             else
             {
-                //These are the old aliases, before removing them, check they exist
-                var constraints = SqlSyntax.GetConstraintsPerColumn(Context.Database).Distinct().ToArray();
-
                 if (constraints.Any(x => x.Item1.InvariantEquals("cmsTemplate") && x.Item3.InvariantEquals("FK_cmsTemplate_cmsTemplate")))
                 {
                     Delete.ForeignKey("FK_cmsTemplate_cmsTemplate").OnTable("cmsTemplate");                   
@@ -59,8 +118,24 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
                 //TODO: Hopefully it's not named something else silly in some crazy old versions
             }
 
-            var columns = SqlSyntax.GetColumnsInSchema(Context.Database).Distinct().ToArray();
-            if (columns.Any(x => x.ColumnName.InvariantEquals("master") && x.TableName.InvariantEquals("cmsTemplate")))
+
+            var dbIndexes = SqlSyntax.GetDefinedIndexes(Context.Database)
+                .Select(x => new DbIndexDefinition()
+                {
+                    TableName = x.Item1,
+                    IndexName = x.Item2,
+                    ColumnName = x.Item3,
+                    IsUnique = x.Item4
+                }).ToArray();
+
+            //in some databases there's an index (IX_Master) on the master column which needs to be dropped first
+            var foundIndex = dbIndexes.FirstOrDefault(x => x.TableName.InvariantEquals("cmsTemplate") && x.ColumnName.InvariantEquals("master"));
+            if (foundIndex != null)
+            {
+                Delete.Index(foundIndex.IndexName).OnTable("cmsTemplate");
+            }
+
+            if (cols.Any(x => x.ColumnName.InvariantEquals("master") && x.TableName.InvariantEquals("cmsTemplate")))
             {
                 Delete.Column("master").FromTable("cmsTemplate");    
             }

src/Umbraco.Core/Persistence/Migrations/Upgrades/TargetVersionSixZeroOne/UpdatePropertyTypesAndGroups.cs

@@ -28,8 +28,11 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSixZeroOne
         {
             if (database != null)
             {
-                //Fetch all PropertyTypes that belongs to a PropertyTypeGroup
-                var propertyTypes = database.Fetch<PropertyTypeDto>("WHERE propertyTypeGroupId > 0");
+                //Fetch all PropertyTypes that belongs to a PropertyTypeGroup                
+                //NOTE: We are writing the full query because we've added a column to the PropertyTypeDto in later versions so one of the columns
+                // won't exist yet
+                var propertyTypes = database.Fetch<PropertyTypeDto>("SELECT * FROM cmsPropertyType WHERE propertyTypeGroupId > 0");
+
                 var propertyGroups = database.Fetch<PropertyTypeGroupDto>("WHERE id > 0");
 
                 foreach (var propertyType in propertyTypes)

src/Umbraco.Core/Persistence/PetaPoco.cs

@@ -215,6 +215,10 @@ namespace Umbraco.Core.Persistence
 				_paramPrefix = "?";
 			if (_dbType == DBType.Oracle)
 				_paramPrefix = ":";
+
+            // by default use MSSQL default ReadCommitted level
+            //TODO change to RepeatableRead - but that is breaking
+		    _isolationLevel = IsolationLevel.ReadCommitted;
 		}
 
 		// Automatically close one open shared connection
@@ -237,7 +241,27 @@ namespace Umbraco.Core.Persistence
 				_sharedConnection.ConnectionString = _connectionString;
                 _sharedConnection.OpenWithRetry();//Changed .Open() => .OpenWithRetry() extension method
 
-				_sharedConnection = OnConnectionOpened(_sharedConnection);
+                // ensure we have the proper isolation level, as levels can leak in pools
+                // read http://stackoverflow.com/questions/9851415/sql-server-isolation-level-leaks-across-pooled-connections
+                // and http://stackoverflow.com/questions/641120/what-exec-sp-reset-connection-shown-in-sql-profiler-means
+                //
+                // NPoco has that code in OpenSharedConnectionImp (commented out?)
+                //using (var cmd = _sharedConnection.CreateCommand())
+                //{
+                //    cmd.CommandText = GetSqlForTransactionLevel(_isolationLevel);
+                //    cmd.CommandTimeout = CommandTimeout;
+                //    cmd.ExecuteNonQuery();
+                //}
+                //
+                // although MSDN documentation for SQL CE clearly states that the above method
+                // should work, it fails & reports an error parsing the query on 'TRANSACTION',
+                // and Google is no help (others have faced the same issue... no solution). So,
+                // switching to another method that does work on all databases.
+                var tr = _sharedConnection.BeginTransaction(_isolationLevel);
+                tr.Commit();
+                tr.Dispose();
+
+                _sharedConnection = OnConnectionOpened(_sharedConnection);
 
 				if (KeepConnectionAlive)
 					_sharedConnectionDepth++;		// Make sure you call Dispose
@@ -269,10 +293,20 @@ namespace Umbraco.Core.Persistence
 		// Helper to create a transaction scope
 		public Transaction GetTransaction()
 		{
-			return new Transaction(this);
-		}
+            return GetTransaction(_isolationLevel);
+        }
 
-		// Use by derived repo generated by T4 templates
+        public Transaction GetTransaction(IsolationLevel isolationLevel)
+        {
+            return new Transaction(this, isolationLevel);
+        }
+
+        public IsolationLevel CurrentTransactionIsolationLevel
+        {
+            get { return _transaction == null ? IsolationLevel.Unspecified : _transaction.IsolationLevel; }
+        }
+
+        // Use by derived repo generated by T4 templates
 		public virtual void OnBeginTransaction() { }
 		public virtual void OnEndTransaction() { }
 
@@ -281,17 +315,23 @@ namespace Umbraco.Core.Persistence
 		// Use `using (var scope=db.Transaction) { scope.Complete(); }` to ensure correct semantics
 		public void BeginTransaction()
 		{
-			_transactionDepth++;
+            BeginTransaction(_isolationLevel);
+        }
+
+        public void BeginTransaction(IsolationLevel isolationLevel)
+        {
+            _transactionDepth++;
 
 			if (_transactionDepth == 1)
 			{
 				OpenSharedConnection();
-				_transaction = _sharedConnection.BeginTransaction();
+				_transaction = _sharedConnection.BeginTransaction(isolationLevel);
 				_transactionCancelled = false;
 				OnBeginTransaction();
 			}
-
-		}
+            else if (isolationLevel > _transaction.IsolationLevel)
+                throw new Exception("Already in a transaction with a lower isolation level.");
+        }
 
 		// Internal helper to cleanup transaction stuff
 		void CleanupTransaction()
@@ -313,6 +353,7 @@ namespace Umbraco.Core.Persistence
 		public void AbortTransaction()
 		{
 			_transactionCancelled = true;
+            //TODO what shall we do if transactionDepth is already zero?
 			if ((--_transactionDepth) == 0)
 				CleanupTransaction();
 		}
@@ -320,11 +361,32 @@ namespace Umbraco.Core.Persistence
 		// Complete the transaction
 		public void CompleteTransaction()
 		{
-			if ((--_transactionDepth) == 0)
+            //TODO what shall we do if transactionDepth is already zero?
+            if ((--_transactionDepth) == 0)
 				CleanupTransaction();
 		}
 
-		// Helper to handle named parameters from object properties
+        // in NPoco this is in DatabaseType
+        private static string GetSqlForTransactionLevel(IsolationLevel isolationLevel)
+        {
+            switch (isolationLevel)
+            {
+                case IsolationLevel.ReadCommitted:
+                    return "SET TRANSACTION ISOLATION LEVEL READ COMMITTED";
+                case IsolationLevel.ReadUncommitted:
+                    return "SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED";
+                case IsolationLevel.RepeatableRead:
+                    return "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ";
+                case IsolationLevel.Serializable:
+                    return "SET TRANSACTION ISOLATION LEVEL SERIALIZABLE";
+                case IsolationLevel.Snapshot:
+                    return "SET TRANSACTION ISOLATION LEVEL SNAPSHOT";
+                default:
+                    return "SET TRANSACTION ISOLATION LEVEL READ COMMITTED";
+            }
+        }
+        
+        // Helper to handle named parameters from object properties
 		static Regex rxParams = new Regex(@"(?<!@)@\w+", RegexOptions.Compiled);
 		public static string ProcessParams(string _sql, object[] args_src, List<object> args_dest)
 		{
@@ -2264,16 +2326,17 @@ namespace Umbraco.Core.Persistence
 		string _lastSql;
 		object[] _lastArgs;
 		string _paramPrefix = "@";
+	    IsolationLevel _isolationLevel;
 	}
 
 	// Transaction object helps maintain transaction depth counts
 	public class Transaction : IDisposable
 	{
-		public Transaction(Database db)
-		{
-			_db = db;
-			_db.BeginTransaction();
-		}
+        public Transaction(Database db, IsolationLevel isolationLevel)
+        {
+            _db = db;
+            _db.BeginTransaction(isolationLevel);
+        }
 
 		public virtual void Complete()
 		{
@@ -2283,6 +2346,7 @@ namespace Umbraco.Core.Persistence
 
 		public void Dispose()
 		{
+            //TODO prevent multiple calls to Dispose
 			if (_db != null)
 				_db.AbortTransaction();
 		}

src/Umbraco.Core/Persistence/Repositories/ContentTypeBaseRepository.cs

@@ -1070,6 +1070,11 @@ AND umbracoNode.id <> @id",
                 out IDictionary<int, PropertyTypeCollection> allPropertyTypeCollection,
                 out IDictionary<int, PropertyGroupCollection> allPropertyGroupCollection)
             {
+                allPropertyGroupCollection = new Dictionary<int, PropertyGroupCollection>();
+                allPropertyTypeCollection = new Dictionary<int, PropertyTypeCollection>();
+
+                // query below is not safe + pointless if array is empty
+                if (contentTypeIds.Length == 0) return;
 
                 // first part Gets all property groups including property type data even when no property type exists on the group
                 // second part Gets all property types including ones that are not on a group
@@ -1105,10 +1110,8 @@ AND umbracoNode.id <> @id",
                         INNER JOIN cmsDataType as DT
                         ON PT.dataTypeId = DT.nodeId
                         LEFT JOIN cmsPropertyTypeGroup as PG
-                        ON PG.id = PT.propertyTypeGroupId");
-
-                if (contentTypeIds.Any())
-                    sqlBuilder.AppendLine(" WHERE (PT.contentTypeId in (@contentTypeIds))");
+                        ON PG.id = PT.propertyTypeGroupId
+                        WHERE (PT.contentTypeId in (@contentTypeIds))");
 
                 sqlBuilder.AppendLine(" ORDER BY (pgId)");
 
@@ -1119,9 +1122,6 @@ AND umbracoNode.id <> @id",
 
                 var result = db.Fetch<dynamic>(sqlBuilder.ToString(), new { contentTypeIds = contentTypeIds });
 
-                allPropertyGroupCollection = new Dictionary<int, PropertyGroupCollection>();
-                allPropertyTypeCollection = new Dictionary<int, PropertyTypeCollection>();
-
                 foreach (var contentTypeId in contentTypeIds)
                 {
                     //from this we need to make :

src/Umbraco.Core/Persistence/Repositories/DeepCloneRuntimeCacheProvider.cs

@@ -79,7 +79,7 @@ namespace Umbraco.Core.Persistence.Repositories
 
         public object GetCacheItem(string cacheKey, Func<object> getCacheItem)
         {
-            return  InnerProvider.GetCacheItem(cacheKey, () =>
+            var cached = InnerProvider.GetCacheItem(cacheKey, () =>
             {
                 var result = DictionaryCacheProviderBase.GetSafeLazy(getCacheItem);
                 var value = result.Value; // force evaluation now - this may throw if cacheItem throws, and then nothing goes into cache
@@ -87,18 +87,21 @@ namespace Umbraco.Core.Persistence.Repositories
 
                 return CheckCloneableAndTracksChanges(value);
             });
+            return CheckCloneableAndTracksChanges(cached);
         }
 
         public object GetCacheItem(string cacheKey, Func<object> getCacheItem, TimeSpan? timeout, bool isSliding = false, CacheItemPriority priority = CacheItemPriority.Normal, CacheItemRemovedCallback removedCallback = null, string[] dependentFiles = null)
         {
-            return InnerProvider.GetCacheItem(cacheKey, () =>
+            var cached = InnerProvider.GetCacheItem(cacheKey, () =>
             {
                 var result = DictionaryCacheProviderBase.GetSafeLazy(getCacheItem);
                 var value = result.Value; // force evaluation now - this may throw if cacheItem throws, and then nothing goes into cache
                 if (value == null) return null; // do not store null values (backward compat)
 
                 return CheckCloneableAndTracksChanges(value);
-            }, timeout, isSliding, priority, removedCallback, dependentFiles);         
+            }, timeout, isSliding, priority, removedCallback, dependentFiles);
+
+            return CheckCloneableAndTracksChanges(cached);
         }
 
         public void InsertCacheItem(string cacheKey, Func<object> getCacheItem, TimeSpan? timeout = null, bool isSliding = false, CacheItemPriority priority = CacheItemPriority.Normal, CacheItemRemovedCallback removedCallback = null, string[] dependentFiles = null)

src/Umbraco.Core/Persistence/Repositories/EntityRepository.cs

@@ -307,7 +307,7 @@ namespace Umbraco.Core.Persistence.Repositories
                 .Append(new Sql(") tmpTbl LEFT JOIN ("))
                 .Append(joinSql)
                 .Append(new Sql(") as property ON id = property.contentNodeId"))
-                .OrderBy("sortOrder");
+                .OrderBy("sortOrder, id");
 
             return wrappedSql;
         }