com.eva.properties.Null Maven / Gradle / Ivy
/*
* $Id: Null.java 23 2007-02-16 07:44:41Z max $
*
* Copyright (c) 2007 Maximilian Antoni. All rights reserved.
*
* This software is licensed as described in the file LICENSE.txt, which you
* should have received as part of this distribution. The terms are also
* available at http://www.maxantoni.de/projects/eva-properties/license.txt.
*/
package com.eva.properties;
/**
* null object for values.
*
* @author max
* @version $Revision: 23 $
*/
public class Null implements Replaceable {
public static final Null INSTANCE = new Null();
private Null() {
super();
}
/*
* @see com.eva.properties.Replaceable#copy(com.eva.properties.Properties)
*/
public Replaceable copy(Properties inParent) {
return INSTANCE;
}
/*
* @see com.eva.properties.Replaceable#replace(com.eva.properties.Context)
*/
public Object replace(Context inContext) throws PropertiesException {
return null;
}
/*
* @see com.eva.properties.Replaceable#write(com.eva.properties.Writer)
*/
public void write(Writer inoutWriter) {
inoutWriter.append("null");
inoutWriter.appendNewline();
}
}