| /** |
| * 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.activemq.kaha.impl.container; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * Set of Map.Entry objects for a container |
| * |
| * |
| */ |
| public class ContainerEntrySet extends ContainerCollectionSupport implements Set { |
| ContainerEntrySet(MapContainerImpl container) { |
| super(container); |
| } |
| |
| public boolean contains(Object o) { |
| return container.entrySet().contains(o); |
| } |
| |
| public Iterator iterator() { |
| return new ContainerEntrySetIterator(container, buildEntrySet().iterator()); |
| } |
| |
| public Object[] toArray() { |
| return buildEntrySet().toArray(); |
| } |
| |
| public Object[] toArray(Object[] a) { |
| return buildEntrySet().toArray(a); |
| } |
| |
| public boolean add(Object o) { |
| throw new UnsupportedOperationException("Cannot add here"); |
| } |
| |
| public boolean remove(Object o) { |
| boolean result = false; |
| if (buildEntrySet().remove(o)) { |
| ContainerMapEntry entry = (ContainerMapEntry)o; |
| container.remove(entry.getKey()); |
| } |
| return result; |
| } |
| |
| public boolean containsAll(Collection c) { |
| return buildEntrySet().containsAll(c); |
| } |
| |
| public boolean addAll(Collection c) { |
| throw new UnsupportedOperationException("Cannot add here"); |
| } |
| |
| public boolean retainAll(Collection c) { |
| List<Object> tmpList = new ArrayList<Object>(); |
| for (Iterator i = c.iterator(); i.hasNext();) { |
| Object o = i.next(); |
| if (!contains(o)) { |
| tmpList.add(o); |
| } |
| } |
| boolean result = false; |
| for (Iterator<Object> i = tmpList.iterator(); i.hasNext();) { |
| result |= remove(i.next()); |
| } |
| return result; |
| } |
| |
| public boolean removeAll(Collection c) { |
| boolean result = true; |
| for (Iterator i = c.iterator(); i.hasNext();) { |
| if (!remove(i.next())) { |
| result = false; |
| } |
| } |
| return result; |
| } |
| |
| public void clear() { |
| container.clear(); |
| } |
| |
| protected Set<ContainerMapEntry> buildEntrySet() { |
| Set<ContainerMapEntry> set = new HashSet<ContainerMapEntry>(); |
| for (Iterator i = container.keySet().iterator(); i.hasNext();) { |
| ContainerMapEntry entry = new ContainerMapEntry(container, i.next()); |
| set.add(entry); |
| } |
| return set; |
| } |
| } |