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//
// System.Data.ProviderBase.AbstractTransaction
//
// Authors:
// Konstantin Triger <kostat@mainsoft.com>
// Boris Kirzner <borisk@mainsoft.com>
//
// (C) 2005 Mainsoft Corporation (http://www.mainsoft.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.ProviderBase
{
using java.sql;
using System.Data;
public abstract class AbstractTransaction : DbTransaction
{
protected String _transactionName;
protected AbstractDBConnection _connection;
protected IsolationLevel _isolationLevel;
public AbstractTransaction(
IsolationLevel isolationLevel,
AbstractDBConnection connection,
String transactionName)
{
connection.ValidateBeginTransaction();
_transactionName = transactionName;
_connection = connection;
_isolationLevel = isolationLevel;
try
{
_connection.JdbcConnection.setAutoCommit(false);
_connection.JdbcConnection.setTransactionIsolation(
convertIsolationLevel(isolationLevel));
}
catch (SQLException exp)
{
throw new System.InvalidOperationException(exp.Message, exp);
}
}
/**
* @see System.Data.IDbTransaction#Connection
*/
protected override DbConnection DbConnection
{
get
{
return _connection;
}
}
/**
* @see System.Data.IDbTransaction#IsolationLevel
*/
public override IsolationLevel IsolationLevel
{
get
{
return _isolationLevel;
}
}
/**
* @see System.Data.IDbTransaction#Commit()
*/
public override void Commit()
{
if (_connection == null)
return;
try
{
_connection.JdbcConnection.commit();
_connection.JdbcConnection.setAutoCommit(true);
_connection = null;
}
catch (SQLException exp)
{
throw new SystemException(exp.Message, exp);
}
}
/**
* @see System.Data.IDbTransaction#Rollback()
*/
public override void Rollback()
{
if (_connection == null)
return;
try
{
_connection.JdbcConnection.rollback();
_connection.JdbcConnection.setAutoCommit(true);
_connection = null;
}
catch (SQLException exp)
{
throw new SystemException(exp.Message, exp);
}
}
internal AbstractTransaction ActiveTransaction {
get {
// recoursively return parent transaction when nesting will
// be implemented
return _connection != null ? this : null;
}
}
private int convertIsolationLevel(IsolationLevel isolationLevel)
{
if (isolationLevel == IsolationLevel.Unspecified)
return vmw.@internal.sql.ConnectionUtils__Finals.TRANSACTION_NONE;
if (isolationLevel == IsolationLevel.ReadCommitted)
return vmw.@internal.sql.ConnectionUtils__Finals.TRANSACTION_READ_COMMITTED;
if (isolationLevel == IsolationLevel.ReadUncommitted)
return vmw.@internal.sql.ConnectionUtils__Finals.TRANSACTION_READ_UNCOMMITTED;
if (isolationLevel == IsolationLevel.RepeatableRead)
return vmw.@internal.sql.ConnectionUtils__Finals.TRANSACTION_REPEATABLE_READ;
if (isolationLevel == IsolationLevel.Serializable)
return vmw.@internal.sql.ConnectionUtils__Finals.TRANSACTION_SERIALIZABLE;
throw new NotSupportedException("The Isolation level '" + isolationLevel + "' is not supported");
}
}
}
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