150 lines
3.4 KiB
C#
150 lines
3.4 KiB
C#
//
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// System.Data.SqlClient.SqlTransaction.cs
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//
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// Author:
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// Tim Coleman (tim@timcoleman.com)
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//
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// Copyright (C) Tim Coleman, 2002
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//
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Data;
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using System.Data.Common;
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namespace System.Data.SqlClient
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{
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public sealed class SqlTransaction : DbTransaction, IDbTransaction, IDisposable
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{
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#region Fields
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bool disposed;
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SqlConnection connection;
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IsolationLevel isolationLevel;
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bool isOpen;
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#endregion
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#region Constructors
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internal SqlTransaction (SqlConnection connection, IsolationLevel isolevel)
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{
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this.connection = connection;
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this.isolationLevel = isolevel;
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isOpen = true;
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}
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#endregion // Constructors
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#region Properties
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public
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new
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SqlConnection Connection {
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get { return connection; }
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}
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internal bool IsOpen {
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get { return isOpen; }
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}
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public
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override
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IsolationLevel IsolationLevel {
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get {
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if (!isOpen)
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throw ExceptionHelper.TransactionNotUsable (GetType ());
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return isolationLevel;
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}
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}
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protected override DbConnection DbConnection {
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get { return Connection; }
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}
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#endregion // Properties
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#region Methods
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public
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override
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void Commit ()
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{
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if (!isOpen)
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throw ExceptionHelper.TransactionNotUsable (GetType ());
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connection.Tds.Execute ("COMMIT TRANSACTION");
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connection.Transaction = null;
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connection = null;
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isOpen = false;
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}
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protected override
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void Dispose (bool disposing)
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{
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if (!disposed) {
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if (disposing) {
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if (isOpen) // in case it is called in the dispose of the class, then the isOpen is already false
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Rollback ();
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}
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disposed = true;
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}
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}
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public
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override
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void Rollback ()
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{
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Rollback (String.Empty);
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}
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public void Rollback (string transactionName)
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{
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if (disposed)
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return;
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if (!isOpen)
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throw ExceptionHelper.TransactionNotUsable (GetType ());
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if (connection.Tds.IsConnected)
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connection.Tds.Execute (String.Format ("IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION {0}",
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transactionName));
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isOpen = false;
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connection.Transaction = null;
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connection = null;
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}
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public void Save (string savePointName)
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{
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if (!isOpen)
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throw ExceptionHelper.TransactionNotUsable (GetType ());
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connection.Tds.Execute (String.Format ("SAVE TRANSACTION {0}", savePointName));
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}
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#endregion // Methods
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}
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}
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