/*
 *  eXist Open Source Native XML Database
 *  Copyright (C) 2001-04 The eXist Project
 *  http://exist-db.org
 *  
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *  
 *  This program 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 Lesser General Public License for more details.
 *  
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *  
 *  $Id$
 */
package org.exist.xquery.pragmas;

import org.exist.xquery.*;
import org.apache.log4j.Logger;
import org.exist.Namespaces;
import org.exist.dom.QName;
import org.exist.storage.txn.TransactionException;

public class BatchTransactionPragma extends Pragma {

    public  final static QName BATCH_TRANSACTION_PRAGMA = new QName("batch-transaction", Namespaces.EXIST_NS, "exist");
    
    private final static Logger LOG = Logger.getLogger(BatchTransactionPragma.class);
    
    
    public BatchTransactionPragma(QName qname, String contents) throws XPathException
    {
        super(qname, contents);
    }

    public void after(XQueryContext context, Expression expression) throws XPathException
    {
    	try
        {
        	context.finishBatchTransaction();
        }
        catch(TransactionException te)
        {
        	throw new XPathException(expression, te.getMessage(), te);
        }
    }

    public void before(XQueryContext context, Expression expression) throws XPathException
    {
    	try
        {
        	context.startBatchTransaction();
        }
        catch(TransactionException te)
        {
        	throw new XPathException(expression, te.getMessage(), te);
        }
    }
}