/**
* 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.Iterator;
import java.util.List;
import org.apache.activemq.kaha.impl.index.IndexItem;
import org.apache.activemq.kaha.impl.index.IndexLinkedList;
/**
* Values collection for the MapContainer
*
* @version $Revision: 1.2 $
*/
class ContainerValueCollection extends ContainerCollectionSupport implements Collection {
ContainerValueCollection(MapContainerImpl container) {
super(container);
}
public boolean contains(Object o) {
return container.containsValue(o);
}
public Iterator iterator() {
IndexLinkedList list = container.getItemList();
return new ContainerValueCollectionIterator(container, list, list.getRoot());
}
public Object[] toArray() {
Object[] result = null;
IndexLinkedList list = container.getItemList();
synchronized (list) {
result = new Object[list.size()];
IndexItem item = list.getFirst();
int count = 0;
while (item != null) {
Object value = container.getValue(item);
result[count++] = value;
item = list.getNextEntry(item);
}
}
return result;
}
public Object[] toArray(Object[] result) {
IndexLinkedList list = container.getItemList();
synchronized (list) {
if (result.length <= list.size()) {
IndexItem item = list.getFirst();
int count = 0;
while (item != null) {
Object value = container.getValue(item);
result[count++] = value;
item = list.getNextEntry(item);
}
}
}
return result;
}
public boolean add(Object o) {
throw new UnsupportedOperationException("Can't add an object here");
}
public boolean remove(Object o) {
return container.removeValue(o);
}
public boolean containsAll(Collection c) {
boolean result = !c.isEmpty();
for (Iterator i = c.iterator(); i.hasNext();) {
if (!contains(i.next())) {
result = false;
break;
}
}
return result;
}
public boolean addAll(Collection c) {
throw new UnsupportedOperationException("Can't add everything here!");
}
public boolean removeAll(Collection c) {
boolean result = true;
for (Iterator i = c.iterator(); i.hasNext();) {
Object obj = i.next();
result &= remove(obj);
}
return result;
}
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);
}
}
for (Iterator<Object> i = tmpList.iterator(); i.hasNext();) {
remove(i.next());
}
return !tmpList.isEmpty();
}
public void clear() {
container.clear();
}
}