[7ec9b7]: System.Data.SQLite / SQLiteEnlistment.cs Maximize Restore History

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/********************************************************
* ADO.NET 2.0 Data Provider for SQLite Version 3.X
* Written by Robert Simpson (robert@blackcastlesoft.com)
*
* Released to the public domain, use at your own risk!
********************************************************/
#if !PLATFORM_COMPACTFRAMEWORK
namespace System.Data.SQLite
{
using System;
using System.Data;
using System.Data.Common;
using System.Transactions;
internal class SQLiteEnlistment : IEnlistmentNotification
{
internal SQLiteTransaction _transaction;
internal Transaction _scope;
internal bool _disposeConnection;
internal SQLiteEnlistment(SQLiteConnection cnn, Transaction scope)
{
_transaction = cnn.BeginTransaction();
_scope = scope;
_scope.EnlistVolatile(this, System.Transactions.EnlistmentOptions.None);
}
private void Cleanup(SQLiteConnection cnn)
{
if (_disposeConnection)
cnn.Dispose();
_transaction = null;
_scope = null;
}
#region IEnlistmentNotification Members
public void Commit(Enlistment enlistment)
{
SQLiteConnection cnn = _transaction.Connection;
cnn._enlistment = null;
try
{
_transaction.IsValid(true);
_transaction.Connection._transactionLevel = 1;
_transaction.Commit();
enlistment.Done();
}
finally
{
Cleanup(cnn);
}
}
public void InDoubt(Enlistment enlistment)
{
enlistment.Done();
}
public void Prepare(PreparingEnlistment preparingEnlistment)
{
if (_transaction.IsValid(false) == false)
preparingEnlistment.ForceRollback();
else
preparingEnlistment.Prepared();
}
public void Rollback(Enlistment enlistment)
{
SQLiteConnection cnn = _transaction.Connection;
cnn._enlistment = null;
try
{
_transaction.Rollback();
enlistment.Done();
}
finally
{
Cleanup(cnn);
}
}
#endregion
}
}
#endif // !PLATFORM_COMPACT_FRAMEWORK