src.main.java.com.eva.properties.NoProperties Maven / Gradle / Ivy
/*
* $Id: NoProperties.java 16 2007-02-10 10:09:34Z max $
*
* Copyright (c) 2006-2007 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 properties.
*
* @author Max Antoni
* @version $Revision: 16 $
*/
class NoProperties extends Properties {
/**
* the only instance.
*/
static final NoProperties INSTANCE = new NoProperties();
/**
* singleton constructor.
*/
private NoProperties() {
super(null);
}
/*
* @see com.eva.properties.Properties#getProperty(
* com.eva.properties.Context, java.lang.String)
*/
Object getProperty(Context inContext, String inKey) {
return null;
}
/*
* @see com.eva.properties.Properties#putProperty(
* com.eva.properties.Context, java.lang.String, java.lang.Object)
*/
Object putProperty(Context inContext, String inKey, Object inValue)
throws PropertiesException {
throw new PropertiesException(inKey + " is not available.");
}
/*
* @see com.eva.properties.Properties#toString(java.lang.StringBuffer,
* java.lang.String)
*/
void write(Writer inoutWriter) {
inoutWriter.appendIndentation();
inoutWriter.append("/* No properties */\n");
}
/*
* @see com.eva.properties.Properties#copy(com.eva.properties.Properties)
*/
Properties copy(Properties inParent) {
return INSTANCE;
}
}