ActiveMQ example source code file (ContainerValueCollection.java)

This example ActiveMQ source code file (ContainerValueCollection.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

arraylist, can't, collection, containervaluecollection, indexitem, indexitem, indexlinkedlist, indexlinkedlist, iterator, iterator, list, object, object, unsupportedoperationexception, util

The ActiveMQ ContainerValueCollection.java source code

/**
 * 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
 * 
 * 
 */
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