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//
// System.Data.Odbc.OdbcFactory
//
// Author:
// Sureshkumar T <tsureshkumar@novell.com>
//
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
#region Using Directives
using System;
using System.Data;
using System.Data.Common;
using System.Security;
using System.Security.Permissions;
#endregion // Using Directives
namespace System.Data.Odbc
{
public sealed class OdbcFactory : DbProviderFactory
{
#region Fields
public static readonly OdbcFactory Instance;
static readonly object lockStatic = new object ();
#endregion //Fields
#region Constructors
/// <remarks>
/// public static variable Instance should hold the the singleton instance
/// based on the knowledge that custom factories without this instance variable
/// ms.net throws exception
/// <pre>
/// System.InvalidOperationException: The requested .Net Framework Data
/// Provider's implementation does not have an Instance field
/// of a System.Data.Common.DbProviderFactory derived type.
/// at System.Data.Common.DbProviderFactories.GetFactory(DataRow providerRow)
/// at System.Data.Common.DbProviderFactories.GetFactory(String providerInvariantName)
/// </pre>
/// </remarks>
static OdbcFactory()
{
lock (lockStatic)
{
if (Instance == null)
Instance = new OdbcFactory ();
}
}
private OdbcFactory()
{
}
#endregion //Constructors
#region Methods
public override DbConnection CreateConnection()
{
return new OdbcConnection () as DbConnection;
}
public override DbCommand CreateCommand()
{
return new OdbcCommand () as DbCommand;
}
public override DbCommandBuilder CreateCommandBuilder()
{
return new OdbcCommandBuilder () as DbCommandBuilder;
}
public override DbConnectionStringBuilder CreateConnectionStringBuilder ()
{
return new OdbcConnectionStringBuilder () as DbConnectionStringBuilder;
}
public override DbDataAdapter CreateDataAdapter()
{
return new OdbcDataAdapter () as DbDataAdapter;
}
public override DbParameter CreateParameter()
{
return new OdbcParameter () as DbParameter;
}
public override CodeAccessPermission CreatePermission (PermissionState state)
{
return new OdbcPermission (state);
}
#endregion //Methods
}
}
#endif // NET_2_0
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