/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.openjpa.util;
import java.util.Map;
/**
* Utility methods used by concurrent map proxies.
*
*/
public class ProxyConcurrentMaps extends ProxyMaps {
/**
* Call before invoking {@link Map#remove(key, value) } on super.
*/
public static boolean beforeRemove(ProxyMap map, Object key, Object value) {
dirty(map, false);
return map.containsKey(key);
}
/**
* Call after invoking {@link Map#remove(key, value) } on super.
*
* @param ret the return value from the super's method
* @param before the return value from {@link #beforeRemove}
* @return the value to return from {@link Map#remove}
*/
public static boolean afterRemove(ProxyMap map, Object key, Object value, boolean ret,
boolean before) {
if (before) {
if (map.getChangeTracker() != null) {
((MapChangeTracker) map.getChangeTracker()).removed(key, ret);
}
removed(map, key, true);
removed(map, ret, false);
}
return ret;
}
}