Shandem
af64c27454
Updated VistaDB & MySQL Upgrade/Install scripts (My SQL still needs upgrade testing) Finalized Media Recycle Bin. Fixed Media optimized mode data layer call. Updated base installer interfaces/classes with more support. Fixes: 22493 [TFS Changeset #58897]
126 lines
4.1 KiB
C#
126 lines
4.1 KiB
C#
/************************************************************************************
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*
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* Umbraco Data Layer
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* MIT Licensed work
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* ©2008 Ruben Verborgh
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*
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***********************************************************************************/
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using System;
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using System.Resources;
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using umbraco.DataLayer.Utility.Installer;
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using System.Text.RegularExpressions;
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namespace umbraco.DataLayer.SqlHelpers.MySql
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{
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/// <summary>
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/// Database installer for an MySql data source.
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/// </summary>
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public class MySqlInstaller : DefaultInstallerUtility<MySqlHelper>
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{
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#region Private Constants
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/// <summary>The latest database version this installer supports.</summary>
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private const DatabaseVersion LatestVersionSupported = DatabaseVersion.Version4;
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/// <summary>The specifications to determine the database version.</summary>
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private static readonly VersionSpecs[] m_VersionSpecs = new VersionSpecs[] {
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new VersionSpecs("id","umbracoNode", "-21", DatabaseVersion.Version4_1),
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new VersionSpecs("action","umbracoAppTree",DatabaseVersion.Version4),
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new VersionSpecs("version()","",DatabaseVersion.None) };
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#endregion
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#region Public Properties
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/// <summary>
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/// Gets a value indicating whether the installer can upgrade the data source.
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/// </summary>
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/// <value>
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/// <c>true</c> if the installer can upgrade the data source; otherwise, <c>false</c>.
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/// </value>
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/// <remarks>Empty data sources can't be upgraded, just installed.</remarks>
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public override bool CanUpgrade
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{
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get
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{
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return CurrentVersion == DatabaseVersion.Version4;
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}
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}
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#endregion
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#region Protected Properties
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/// <summary>
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/// Gets the version specification for evaluation by DetermineCurrentVersion.
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/// Only first matching specification is taken into account.
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/// </summary>
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/// <value>The version specifications.</value>
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protected override VersionSpecs[] VersionSpecs { get { return m_VersionSpecs; } }
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#endregion
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#region Public Constructors
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/// <summary>
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/// Initializes a new instance of the <see cref="MySqlInstaller"/> class.
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/// </summary>
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/// <param name="sqlHelper">The SQL helper.</param>
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public MySqlInstaller(MySqlHelper sqlHelper)
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: base(sqlHelper, LatestVersionSupported)
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{ }
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#endregion
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#region DefaultInstaller Members
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/// <summary>
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/// Returns the sql to do a full install
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/// </summary>
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protected override string FullInstallSql
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{
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get { return GetMySqlVersion() >= 5 ? SqlResources.Total : ConvertToMySql4(SqlResources.Total); }
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}
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/// <summary>
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/// Returns the sql to do an upgrade
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/// </summary>
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protected override string UpgradeSql
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{
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get
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{
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string upgradeFile = string.Format("{0}_Upgrade", CurrentVersion.ToString());
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return SqlResources.ResourceManager.GetString(upgradeFile);
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}
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}
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#endregion
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#region Protected Methods
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/// <summary>
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/// Converts the SQL command to the MySQL 4.x dialect.
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/// </summary>
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/// <param name="sql">The SQL in MySQL 5+ dialect.</param>
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/// <returns>The SQL in MySQL 4.x dialect.</returns>
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protected virtual string ConvertToMySql4(string sql)
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{
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// MySQL 4.x does not support the varchar datatype, but uses text instead
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return Regex.Replace(sql, @"(^?[ | n]varchar \(([2-9][5-9][6-9]|[0-9]{4,5})\)*)",
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@" text", RegexOptions.IgnoreCase);
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}
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/// <summary>
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/// Gets the MySQL major version number.
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/// </summary>
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/// <returns>The MySQL major version number</returns>
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protected virtual int GetMySqlVersion()
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{
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return int.Parse(SqlHelper.ExecuteScalar<string>("SELECT SUBSTRING(VERSION(),1,1)"));
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}
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#endregion
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}
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}
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