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//
// Community.CsharpSqlite.SQLiteClient.SqliteTransaction.cs
//
// Community.CsharpSqlite.SQLiteClient data access components for .Net
// Derived from ByteFX.Data
// With permission from Reggie Burnett to relicense under MIT/X11
//
// 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;
using System.Data;
using System.Data.Common;
namespace Community.CsharpSqlite.SQLiteClient
{
public sealed class SqliteTransaction : DbTransaction
{
#region Fields
private IsolationLevel _isolationLevel;
private SqliteConnection _connection;
private bool _open;
#endregion
#region Contructors and destructors
internal SqliteTransaction()
{
_open = true;
}
#endregion
#region Public Properties
protected override DbConnection DbConnection
{
get { return _connection; }
}
public override IsolationLevel IsolationLevel
{
get { return _isolationLevel; }
}
internal void SetConnection (DbConnection conn)
{
_connection = (SqliteConnection)conn;
}
internal void SetIsolationLevel (IsolationLevel level)
{
_isolationLevel = level;
}
#endregion
#region Public Methods
public override void Commit()
{
if (_connection == null || _connection.State != ConnectionState.Open)
throw new InvalidOperationException("Connection must be valid and open to commit transaction");
if (!_open)
throw new InvalidOperationException("Transaction has already been committed or is not pending");
try
{
SqliteCommand cmd = (SqliteCommand)_connection.CreateCommand();
cmd.CommandText = "COMMIT";
cmd.ExecuteNonQuery();
_open = false;
}
catch (Exception ex)
{
throw ex;
}
}
public override void Rollback()
{
if (_connection == null || _connection.State != ConnectionState.Open)
throw new InvalidOperationException("Connection must be valid and open to commit transaction");
if (!_open)
throw new InvalidOperationException("Transaction has already been rolled back or is not pending");
try
{
SqliteCommand cmd = (SqliteCommand)_connection.CreateCommand();
cmd.CommandText = "ROLLBACK";
cmd.ExecuteNonQuery();
_open = false;
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
}
}