|
ActiveMQ example source code file (ContainerListIterator.java)
The ActiveMQ ContainerListIterator.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.ListIterator; import org.apache.activemq.kaha.StoreEntry; import org.apache.activemq.kaha.impl.index.IndexItem; import org.apache.activemq.kaha.impl.index.IndexLinkedList; /** * */ public class ContainerListIterator extends ContainerValueCollectionIterator implements ListIterator { protected ContainerListIterator(ListContainerImpl container, IndexLinkedList list, IndexItem start) { super(container, list, start); } /* * (non-Javadoc) * * @see java.util.ListIterator#hasPrevious() */ public boolean hasPrevious() { synchronized (container) { nextItem = (IndexItem)list.refreshEntry(nextItem); return list.getPrevEntry(nextItem) != null; } } /* * (non-Javadoc) * * @see java.util.ListIterator#previous() */ public Object previous() { synchronized (container) { nextItem = (IndexItem)list.refreshEntry(nextItem); nextItem = list.getPrevEntry(nextItem); return nextItem != null ? container.getValue(nextItem) : null; } } /* * (non-Javadoc) * * @see java.util.ListIterator#nextIndex() */ public int nextIndex() { int result = -1; if (nextItem != null) { synchronized (container) { nextItem = (IndexItem)list.refreshEntry(nextItem); StoreEntry next = list.getNextEntry(nextItem); if (next != null) { result = container.getInternalList().indexOf(next); } } } return result; } /* * (non-Javadoc) * * @see java.util.ListIterator#previousIndex() */ public int previousIndex() { int result = -1; if (nextItem != null) { synchronized (container) { nextItem = (IndexItem)list.refreshEntry(nextItem); StoreEntry prev = list.getPrevEntry(nextItem); if (prev != null) { result = container.getInternalList().indexOf(prev); } } } return result; } /* * (non-Javadoc) * * @see java.util.ListIterator#set(E) */ public void set(Object o) { IndexItem item = ((ListContainerImpl)container).internalSet(previousIndex() + 1, o); nextItem = item; } /* * (non-Javadoc) * * @see java.util.ListIterator#add(E) */ public void add(Object o) { IndexItem item = ((ListContainerImpl)container).internalAdd(previousIndex() + 1, o); nextItem = item; } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ ContainerListIterator.java source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.