/* Copyright (C) 2004 - 2008  db4objects Inc.  http://www.db4o.com

This file is part of the db4o open source object database.

db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
package com.db4o.internal.cs;

import com.db4o.internal.*;

public class ClientTransactionHandle {
    private final ClientTransactionPool _transactionPool;
    private Transaction _mainTransaction;
    private Transaction _transaction;
    private boolean _rollbackOnClose;
	
    public ClientTransactionHandle(ClientTransactionPool transactionPool) {
		_transactionPool = transactionPool;
        _mainTransaction = _transactionPool.acquireMain();
		_rollbackOnClose = true;
	}

    public void acquireTransactionForFile(String fileName) {
        _transaction = _transactionPool.acquire(fileName);
	}
	
    public void releaseTransaction() {
		if (_transaction != null) {
			_transactionPool.release(_transaction, _rollbackOnClose);
			_transaction = null;
		}
	}
	
    public boolean isClosed() {
		return _transactionPool.isClosed();
	}
    
    public void close() {
		if ((!_transactionPool.isClosed()) && (_mainTransaction != null)) {
            _mainTransaction.close(_rollbackOnClose);
        }
	}
	
    public Transaction transaction() {
        if (_transaction != null) {
            return _transaction;
        }
        return _mainTransaction;
    }

    public void transaction(Transaction transaction) {
		if (_transaction != null) {
			_transaction = transaction;
		} else {
			_mainTransaction = transaction;
		}
		_rollbackOnClose = false;
    }

}
