/* This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV This program is free software; you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation; either version 3 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program; if not, see http://www.gnu.org/licenses or write to the Free Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 */ package com.servoy.j2db.util.visitor; import java.util.HashMap; import java.util.Map; /** Visitor class to for replacing duplicate objects with the same instance in a IVisitable object. * @see IVisitable * @author rgansevles * */ public class PackVisitor implements IVisitor { Map map = new HashMap(); public Object visit(Object o) { Object o2 = map.get(o); if (o2 == null) { map.put(o, o); o2 = o; } return o2; } }