mcs/class/referencesource/System.Data/System/Data/SqlClient/SqlClientFactory.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="SqlClientFactory.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">[....]</owner>
   6 // <owner current="true" primary="false">[....]</owner>
   7 //------------------------------------------------------------------------------
   8
   9 using System;
  10 using System.Data;
  11 using System.Data.Common;
  12 using System.Data.Sql;
  13 using System.Security;
  14 using System.Security.Permissions;
  15
  16 namespace System.Data.SqlClient {
  17
  18     public sealed class SqlClientFactory : DbProviderFactory, IServiceProvider {
  19
  20         public static readonly SqlClientFactory Instance = new SqlClientFactory();
  21
  22         private SqlClientFactory() {
  23         }
  24
  25         public override bool CanCreateDataSourceEnumerator {
  26             get {
  27                 return true;
  28             }
  29         }
  30
  31         public override DbCommand CreateCommand() {
  32             return new SqlCommand();
  33         }
  34
  35         public override DbCommandBuilder CreateCommandBuilder() {
  36             return new SqlCommandBuilder();
  37         }
  38
  39         public override DbConnection CreateConnection() {
  40             return new SqlConnection();
  41         }
  42
  43         public override DbConnectionStringBuilder CreateConnectionStringBuilder() {
  44             return new SqlConnectionStringBuilder();
  45         }
  46
  47         public override DbDataAdapter CreateDataAdapter() {
  48             return new SqlDataAdapter();
  49         }
  50
  51         public override DbParameter CreateParameter() {
  52             return new SqlParameter();
  53         }
  54
  55         public override CodeAccessPermission CreatePermission(PermissionState state) {
  56             return new SqlClientPermission(state);
  57         }
  58
  59         public override DbDataSourceEnumerator CreateDataSourceEnumerator() {
  60             return SqlDataSourceEnumerator.Instance;
  61         }
  62
  63         /// <summary>
  64         /// Extension mechanism for additional services; currently the only service
  65         /// supported is the DbProviderServices
  66         /// </summary>
  67         /// <returns>requested service provider or null.</returns>
  68         object IServiceProvider.GetService(Type serviceType) {
  69             object result = null;
  70             if (serviceType == GreenMethods.SystemDataCommonDbProviderServices_Type) {
  71                 result = GreenMethods.SystemDataSqlClientSqlProviderServices_Instance();
  72             }
  73             return result;
  74         }
  75     }
  76 }
  77