com.thoughtworks.xstream.persistence.XmlMap Maven / Gradle / Ivy
/*
* Copyright (C) 2006 Joe Walnes.
* Copyright (C) 2007, 2008 XStream Committers.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
* Created on 13. June 2006 by Guilherme Silveira
*/
package com.thoughtworks.xstream.persistence;
import java.util.AbstractMap;
import java.util.AbstractSet;
import java.util.Iterator;
import java.util.Set;
/**
* A persistent map. Its values are actually serialized as xml files. If you
* need an application-wide synchronized version of this map, try the respective
* Collections methods.
*
* @author Guilherme Silveira
*/
public class XmlMap extends AbstractMap {
private final PersistenceStrategy persistenceStrategy;
public XmlMap(PersistenceStrategy streamStrategy) {
this.persistenceStrategy = streamStrategy;
}
public int size() {
return persistenceStrategy.size();
}
public Object get(Object key) {
// faster lookup
return persistenceStrategy.get(key);
}
public Object put(Object key, Object value) {
return persistenceStrategy.put(key,value);
}
public Object remove(Object key) {
return persistenceStrategy.remove(key);
}
public Set entrySet() {
return new XmlMapEntries();
}
class XmlMapEntries extends AbstractSet {
public int size() {
return XmlMap.this.size();
}
public boolean isEmpty() {
return XmlMap.this.isEmpty();
}
public Iterator iterator() {
return persistenceStrategy.iterator();
}
}
}