/* * 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.coalesce;import java.util.*;class AbstractStrongCoalescer implements Coalescer{    Map coalesced;    AbstractStrongCoalescer( Map coalesced )    { this.coalesced = coalesced; }    public Object coalesce( Object o )    {	Object out = coalesced.get( o );	if ( out == null )	    {		coalesced.put( o , o );		out = o;	    }	return out;    }    public int countCoalesced()    { return coalesced.size(); }    public Iterator iterator()    { return new CoalescerIterator( coalesced.keySet().iterator() ); }}