class/Npgsql/Npgsql/NpgsqlFactory.cs

   1 // Npgsql.NpgsqlFactory.cs
   2 //
   3 // Author:
   4 //      Francisco Jr. (fxjrlists@yahoo.com.br)
   5 //      Veerapuram Varadhan  (vvaradhan@novell.com)
   6 //
   7 //      Copyright (C) 2002-2006 The Npgsql Development Team
   8 //      Copyright (C) 2009 Novell Inc
   9 //
  10 // Permission to use, copy, modify, and distribute this software and its
  11 // documentation for any purpose, without fee, and without a written
  12 // agreement is hereby granted, provided that the above copyright notice
  13 // and this paragraph and the following two paragraphs appear in all copies.
  14 //
  15 // IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
  16 // FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
  17 // INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
  18 // DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
  19 // THE POSSIBILITY OF SUCH DAMAGE.
  20 //
  21 // THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
  22 // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  23 // AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
  24 // ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
  25 // TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  26
  27 using System;
  28 using System.ComponentModel;
  29 using System.Data;
  30 using System.Data.Common;
  31
  32 namespace Npgsql
  33 {
  34         /// <summary>
  35         /// A factory to create instances of various Npgsql objects.
  36         /// </summary>
  37         [Serializable]
  38         public sealed class NpgsqlFactory : DbProviderFactory, IServiceProvider
  39         {
  40                 public static NpgsqlFactory Instance = new NpgsqlFactory();
  41
  42
  43                 private NpgsqlFactory()
  44                 {
  45                 }
  46
  47
  48                 /// <summary>
  49                 /// Creates an NpgsqlCommand object.
  50                 /// </summary>
  51                 public override DbCommand CreateCommand()
  52                 {
  53                         return (DbCommand) (IDbCommand) new NpgsqlCommand();
  54                 }
  55
  56
  57                 public override DbCommandBuilder CreateCommandBuilder()
  58                 {
  59                         return (DbCommandBuilder) (Component) new NpgsqlCommandBuilder();
  60                 }
  61
  62                 public override DbConnection CreateConnection()
  63                 {
  64                     return (DbConnection) (IDbConnection) new NpgsqlConnection();
  65                 }
  66
  67                 public override DbDataAdapter CreateDataAdapter()
  68                 {
  69                     return (DbDataAdapter) (IDbDataAdapter) new NpgsqlDataAdapter();
  70                 }
  71
  72                 public override DbParameter CreateParameter()
  73                 {
  74                     return (DbParameter) (IDbDataParameter) new NpgsqlParameter();
  75                 }
  76
  77 #if NET_2_0
  78                 public override DbConnectionStringBuilder CreateConnectionStringBuilder()
  79                 {
  80                         return new NpgsqlConnectionStringBuilder();
  81                 }
  82 #endif
  83                 #region IServiceProvider Members
  84
  85                 public object GetService(Type serviceType)
  86                 {
  87 #if ENTITIES
  88             if (serviceType == typeof(DbProviderServices))
  89                 return NpgsqlServices.Instance;
  90             else
  91 #endif
  92                         return null;
  93                 }
  94
  95                 #endregion
  96         }
  97 }