/*
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;
/** Visitor class to for replacing all occurrences of one object with another one in a IVisitable object.
* @see IVisitable
* @author rgansevles
*
*/public class ReplaceVisitor implements IVisitor
{
private Object org;
private Object repl;
private boolean useEquals;
// result
private boolean found = false;
/**
* @param org
* @param repl
*/
public ReplaceVisitor(Object org, Object repl, boolean useEquals)
{
this.org = org;
this.repl = repl;
this.useEquals = useEquals;
}
public Object visit(Object o)
{
boolean match = false;
if (org == null)
{
match = o == null;
}
else
{
match = (org == o || (useEquals && org.equals(o)));
}
if (match)
{
found = true;
return repl;
}
return o;
}
public boolean found()
{
return found;
}
}