package cc.emit.toplink;

import oracle.toplink.exceptions.DatabaseException;
import oracle.toplink.exceptions.ExceptionHandler;

/**
 * TopLink exception handler: attempts to reconnect dropped connections 
 * to the database. 
 *
 * @author Renaud Waldura <renaud@waldura.com>
 * @version $Id: ReconnectingExceptionHandler.java,v 1.3 2003/11/03 01:43:24 renaud Exp $
 */
public class ReconnectingExceptionHandler implements ExceptionHandler
{
	public Object handleException(RuntimeException exception)
	{
		if (exception instanceof DatabaseException
			&& (exception.getMessage().indexOf("onnection reset") > 0
                || exception.getMessage().indexOf("roken pipe") > 0))
		{
            DatabaseException ex = (DatabaseException) exception;
            ex.getAccessor().reestablishConnection(ex.getSession());
			return ex.getSession().executeQuery(ex.getQuery());
		}
        
		return null;
	}
}