New test.
[mono.git] / mcs / class / System.Data / System.Data.Odbc / OdbcFactory.cs
1 //
2 // System.Data.Odbc.OdbcFactory
3 //
4 // Author:
5 //   Sureshkumar T <tsureshkumar@novell.com>
6 //
7 //
8 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
9 //
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
17 // 
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
20 // 
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 //
29
30 #if NET_2_0
31
32 #region Using Directives
33 using System;
34 using System.Data;
35 using System.Data.Common;
36 #endregion // Using Directives
37
38 namespace System.Data.Odbc 
39 {
40         
41         public sealed class OdbcFactory : DbProviderFactory
42         {
43                 #region Fields
44                 public static readonly OdbcFactory Instance;
45                 static readonly object lockobj = new object ();
46                 #endregion //Fields
47
48                 #region Constructors
49                 /// <remarks>
50                 /// public static variable Instance should hold the the singleton instance 
51                 /// based on the knowledge that custom factories without this instance variable
52                 /// ms.net  throws exception 
53                 /// <pre>
54                 /// System.InvalidOperationException: The requested .Net Framework Data 
55                 ///             Provider's implementation does not have an Instance field 
56                 ///             of a System.Data.Common.DbProviderFactory derived type.
57                 ///     at System.Data.Common.DbProviderFactories.GetFactory(DataRow providerRow)
58                 ///     at System.Data.Common.DbProviderFactories.GetFactory(String providerInvariantName)
59                 /// </pre>
60                 /// </remarks>
61                 static OdbcFactory() 
62                 {
63                         if (Instance == null)
64                                 Instance = new OdbcFactory ();                       
65                 }
66                 
67                 private OdbcFactory()
68                 {
69                         
70                 }
71                 
72                 #endregion //Constructors
73
74                 #region Methods
75                 public override DbConnection CreateConnection()
76                 {
77                         //OdbcConnectionFactory connFactory = OdbcConnectionFactory.GetSingleton (this);
78                         return  new OdbcConnection ();
79                 }
80                 
81                 public override DbCommand CreateCommand()
82                 {
83                         return new OdbcCommand ()  as DbCommand;
84                 }
85                 
86                 public override DbCommandBuilder CreateCommandBuilder()
87                 {
88                         return new OdbcCommandBuilder () as DbCommandBuilder;
89                 }
90                 
91                 
92 //                 public override DbConnectionStringBuilder CreateConnectionStringBuilder()
93 //                 {
94 //                         throw new NotImplementedException ();
95 //                 }
96                 
97                 public override DbDataAdapter CreateDataAdapter()
98                 {
99                         return new OdbcDataAdapter () as DbDataAdapter;
100                 }
101                 
102                 public override DbParameter CreateParameter()
103                 {
104                         return new OdbcParameter () as DbParameter;
105                 }
106
107 //                 public override CodeAccessPermission CreatePermission(PermissionState state)
108 //                 {
109 //                         throw new NotImplementedException ();
110 //                 }
111                 
112                 #endregion //Methods
113
114         }
115  
116
117 }
118 #endif // NET_2_0