/*
* Copyright 2004-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.springframework.binding.collection;
import java.io.Serializable;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
import org.springframework.core.style.ToStringCreator;
/**
* A map decorator that implements <code>SharedMap</code>. By default, simply returns the map itself as the mutex.
* Subclasses may override to return a different mutex object.
*
* @author Keith Donald
*/
public class SharedMapDecorator<K, V> implements SharedMap<K, V>, Serializable {
/**
* The wrapped, target map.
*/
private Map<K, V> map;
/**
* Creates a new shared map decorator.
* @param map the map that is shared by multiple threads, to be synced
*/
public SharedMapDecorator(Map<K, V> map) {
this.map = map;
}
// implementing Map
public void clear() {
map.clear();
}
public boolean containsKey(Object key) {
return map.containsKey(key);
}
public boolean containsValue(Object value) {
return map.containsValue(value);
}
public Set<Entry<K, V>> entrySet() {
return map.entrySet();
}
public V get(Object key) {
return map.get(key);
}
public boolean isEmpty() {
return map.isEmpty();
}
public Set<K> keySet() {
return map.keySet();
}
public V put(K key, V value) {
return map.put(key, value);
}
public void putAll(Map<? extends K, ? extends V> map) {
this.map.putAll(map);
}
public V remove(Object key) {
return map.remove(key);
}
public int size() {
return map.size();
}
public Collection<V> values() {
return map.values();
}
// implementing SharedMap
public Object getMutex() {
return map;
}
public String toString() {
return new ToStringCreator(this).append("map", map).append("mutex", getMutex()).toString();
}
}