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//
// System.Data.OleDb.OleDbTransaction
//
// Authors:
// Rodrigo Moya (rodrigo@ximian.com)
// Tim Coleman (tim@timcoleman.com)
//
// Copyright (C) Rodrigo Moya, 2002
// Copyright (C) Tim Coleman, 2002
// Copyright (C) 2004-2005 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.
//
using System.Data.Common;
namespace System.Data.OleDb
{
public sealed class OleDbTransaction : MarshalByRefObject, IDbTransaction, IDisposable
{
#region Fields
OleDbConnection connection;
IntPtr gdaTransaction;
int depth;
#endregion // Fields
#region Constructors
internal OleDbTransaction (OleDbConnection connection, int depth)
: this (connection, depth, IsolationLevel.ReadCommitted)
{
}
internal OleDbTransaction (OleDbConnection connection)
: this (connection, 1)
{
}
internal OleDbTransaction (OleDbConnection connection, int depth, IsolationLevel isolevel)
{
this.connection = connection;
gdaTransaction = libgda.gda_transaction_new (depth.ToString ());
switch (isolevel) {
case IsolationLevel.ReadCommitted :
libgda.gda_transaction_set_isolation_level (gdaTransaction,
GdaTransactionIsolation.ReadCommitted);
break;
case IsolationLevel.ReadUncommitted :
libgda.gda_transaction_set_isolation_level (gdaTransaction,
GdaTransactionIsolation.ReadUncommitted);
break;
case IsolationLevel.RepeatableRead :
libgda.gda_transaction_set_isolation_level (gdaTransaction,
GdaTransactionIsolation.RepeatableRead);
break;
case IsolationLevel.Serializable :
libgda.gda_transaction_set_isolation_level (gdaTransaction,
GdaTransactionIsolation.Serializable);
break;
}
libgda.gda_connection_begin_transaction (connection.GdaConnection, gdaTransaction);
}
internal OleDbTransaction (OleDbConnection connection, IsolationLevel isolevel)
: this (connection, 1, isolevel)
{
}
#endregion // Constructors
#region Properties
public OleDbConnection Connection {
get {
return connection;
}
}
IDbConnection IDbTransaction.Connection {
get {
return connection;
}
}
public IsolationLevel IsolationLevel {
get {
switch (libgda.gda_transaction_get_isolation_level (gdaTransaction)) {
case GdaTransactionIsolation.ReadCommitted :
return IsolationLevel.ReadCommitted;
case GdaTransactionIsolation.ReadUncommitted :
return IsolationLevel.ReadUncommitted;
case GdaTransactionIsolation.RepeatableRead :
return IsolationLevel.RepeatableRead;
case GdaTransactionIsolation.Serializable :
return IsolationLevel.Serializable;
}
return IsolationLevel.Unspecified;
}
}
#endregion // Properties
#region Methods
public OleDbTransaction Begin ()
{
return new OleDbTransaction (connection, depth + 1);
}
public OleDbTransaction Begin (IsolationLevel isolevel)
{
return new OleDbTransaction (connection, depth + 1, isolevel);
}
public void Commit ()
{
if (!libgda.gda_connection_commit_transaction (connection.GdaConnection,
gdaTransaction))
throw new InvalidOperationException ();
}
[MonoTODO]
~OleDbTransaction ()
{
libgda.FreeObject (gdaTransaction);
gdaTransaction = IntPtr.Zero;
}
[MonoTODO]
void IDisposable.Dispose ()
{
GC.SuppressFinalize (this);
throw new NotImplementedException ();
}
public void Rollback ()
{
if (!libgda.gda_connection_rollback_transaction (connection.GdaConnection,
gdaTransaction))
throw new InvalidOperationException ();
}
#endregion // Methods
}
}
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