EntityProviderFactory.cs source code in C# .NET

                        Code:
                         / Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataEntity / System / Data / EntityClient / EntityProviderFactory.cs / 2 / EntityProviderFactory.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
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.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
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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EntityProviderFactory.cs source code in C# .NET

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