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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / EntityClient / EntityProviderFactory.cs / 1305376 / EntityProviderFactory.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Diagnostics.CodeAnalysis; using System.Text; using System.Data; using System.Data.Common; using System.Security; using System.Security.Permissions; namespace System.Data.EntityClient { ////// Class representing a provider factory for the entity client provider /// public sealed class EntityProviderFactory : DbProviderFactory, IServiceProvider { ////// A singleton object for the entity client provider factory object /// [SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes", Justification = "EntityProviderFactory implements the singleton pattern and it's stateless. This is needed in order to work with DbProviderFactories.")] public static readonly EntityProviderFactory Instance = new EntityProviderFactory(); ////// Constructs the EntityProviderFactory object, this is private as users shouldn't create it directly /// private EntityProviderFactory() { } ////// Creates a EntityCommand object and returns it /// ///A EntityCommand object public override DbCommand CreateCommand() { return new EntityCommand(); } ////// Creates a EntityCommandBuilder object and returns it /// ///A EntityCommandBuilder object ///public override DbCommandBuilder CreateCommandBuilder() { throw EntityUtil.NotSupported(); } /// /// Creates a EntityConnection object and returns it /// ///A EntityConnection object public override DbConnection CreateConnection() { return new EntityConnection(); } ////// Creates a EntityConnectionStringBuilder object and returns it /// ///A EntityConnectionStringBuilder object public override DbConnectionStringBuilder CreateConnectionStringBuilder() { return new EntityConnectionStringBuilder(); } ////// Creates a DbDataAdapter object and returns it, this method is currently not supported /// ///A DbDataAdapter object ///public override DbDataAdapter CreateDataAdapter() { throw EntityUtil.NotSupported(); } /// /// Creates a EntityParameter object and returns it /// ///A EntityParameter object public override DbParameter CreateParameter() { return new EntityParameter(); } ////// Creates a CodeAccessPermission object and returns it /// /// The permission state level for the code access ///A CodeAccessPermission object public override CodeAccessPermission CreatePermission(PermissionState state) { throw EntityUtil.NotSupported(); } ////// Extension mechanism for additional services; /// ///requested service provider or null. object IServiceProvider.GetService(Type serviceType) { object result = null; if (serviceType == typeof(DbProviderServices)) { result = EntityProviderServices.Instance; } else if (serviceType == typeof(IEntityAdapter)) { result = new EntityAdapter(); } return result; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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