/* * Distributed as part of c3p0 v.0.9.1-pre6 * * Copyright (C) 2005 Machinery For Change, Inc. * * Author: Steve Waldman <swaldman@mchange.com> * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License version 2.1, as  * published by the Free Software Foundation. * * This software 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 software; see the file LICENSE.  If not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. */package com.mchange.v2.c3p0.util;import java.util.*;import java.sql.*;import javax.sql.*;public class ConnectionEventSupport{    PooledConnection source;    HashSet          mlisteners = new HashSet();    public ConnectionEventSupport(PooledConnection source)    { this.source = source; }    public synchronized void addConnectionEventListener(ConnectionEventListener mlistener)    {mlisteners.add(mlistener);}    public synchronized void removeConnectionEventListener(ConnectionEventListener mlistener)    {mlisteners.remove(mlistener);}    public void fireConnectionClosed()    {	Set mlCopy;	synchronized (this)	    { mlCopy = (Set) mlisteners.clone(); }	ConnectionEvent evt = new ConnectionEvent(source);	for (Iterator i = mlCopy.iterator(); i.hasNext();)	    {		ConnectionEventListener cl = (ConnectionEventListener) i.next();		cl.connectionClosed(evt);	    }    }    public void fireConnectionErrorOccurred(SQLException error)    {	Set mlCopy;	synchronized (this)	    { mlCopy = (Set) mlisteners.clone(); }	ConnectionEvent evt = new ConnectionEvent(source, error);	for (Iterator i = mlCopy.iterator(); i.hasNext();)	    {		ConnectionEventListener cl = (ConnectionEventListener) i.next();		cl.connectionErrorOccurred(evt);	    }    }}