| /******************************************************************************* |
| * 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.ofbiz.base.util.collections; |
| |
| import java.util.Map; |
| |
| public abstract class GenericMapEntrySet<K, V, M extends GenericMap<K, V>> extends GenericMapSet<K, V, M, Map.Entry<K, V>> { |
| public GenericMapEntrySet(M source) { |
| super(source); |
| } |
| |
| public boolean contains(Object item) { |
| if (item == null) return false; |
| if (!(item instanceof Map.Entry<?, ?>)) return false; |
| Map.Entry<?, ?> other = (Map.Entry<?, ?>) item; |
| return contains(other.getKey(), other.getValue()); |
| } |
| |
| protected abstract boolean contains(Object key, Object value); |
| |
| public boolean remove(Object item) { |
| if (item == null) return false; |
| if (!(item instanceof Map.Entry<?, ?>)) return false; |
| Map.Entry<?, ?> other = (Map.Entry<?, ?>) item; |
| Object key = other.getKey(); |
| if (!source.containsKey(key)) return false; |
| source.remove(key); |
| return true; |
| } |
| } |
| |