| /** |
| * 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.index; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import org.apache.activemq.kaha.impl.DataManager; |
| import org.apache.activemq.kaha.impl.data.DataManagerImpl; |
| import org.apache.activemq.kaha.impl.data.Item; |
| import org.apache.activemq.util.IOHelper; |
| |
| |
| public class DiskIndexLinkedListTest extends VMIndexLinkedListTest { |
| |
| private IndexManager im; |
| protected IndexLinkedList createList(IndexItem root) throws IOException { |
| String dirName = System.getProperty("basedir", ".") + "/target/activemq-data/testIndex"; |
| File file = new File(dirName); |
| file.mkdirs(); |
| IOHelper.deleteChildren(file); |
| DataManager dm = new DataManagerImpl(file,"test",new AtomicLong()); |
| im = new IndexManager(file,"test","rw",dm,new AtomicLong()); |
| root = im.createNewIndex(); |
| im.storeIndex(root); |
| return new DiskIndexLinkedList(im,root); |
| } |
| |
| IndexItem createIndex(IndexLinkedList indexList,int offset) throws IOException { |
| IndexItem result = im.createNewIndex(); |
| im.storeIndex(result); |
| return result; |
| } |
| |
| protected void addToList(IndexLinkedList list,IndexItem item) throws IOException { |
| IndexItem root = list.getRoot(); |
| IndexItem prev = list.getLast(); |
| prev = prev != null ? prev : root; |
| IndexItem next = list.getNextEntry(prev); |
| prev.setNextItem(item.getOffset()); |
| item.setPreviousItem(prev.getOffset()); |
| im.updateIndexes(prev); |
| if (next != null) { |
| next.setPreviousItem(item.getOffset()); |
| item.setNextItem(next.getOffset()); |
| im.updateIndexes(next); |
| } |
| im.storeIndex(item); |
| list.add(item); |
| } |
| |
| protected void insertToList(IndexLinkedList list,int pos,IndexItem item) throws IOException { |
| IndexItem root = list.getRoot(); |
| IndexItem prev = null; |
| IndexItem next = null; |
| if (pos <= 0) { |
| prev = root; |
| next = list.getNextEntry(root); |
| } else if (pos >= list.size()) { |
| prev = list.getLast(); |
| if (prev==null) { |
| prev=root; |
| } |
| next = null; |
| } else { |
| prev = list.get(pos); |
| prev = prev != null ? prev : root; |
| next = list.getNextEntry(prev); |
| } |
| prev.setNextItem(item.getOffset()); |
| item.setPreviousItem(prev.getOffset()); |
| im.updateIndexes(prev); |
| if (next != null) { |
| next.setPreviousItem(item.getOffset()); |
| item.setNextItem(next.getOffset()); |
| im.updateIndexes(next); |
| } |
| im.storeIndex(item); |
| list.setRoot(root); |
| list.add(pos,item); |
| } |
| |
| protected void insertFirst(IndexLinkedList list,IndexItem item) throws IOException { |
| IndexItem root = list.getRoot(); |
| IndexItem prev = root; |
| IndexItem next = list.getNextEntry(prev); |
| prev.setNextItem(item.getOffset()); |
| item.setPreviousItem(prev.getOffset()); |
| im.updateIndexes(prev); |
| if (next != null) { |
| next.setPreviousItem(item.getOffset()); |
| item.setNextItem(next.getOffset()); |
| im.updateIndexes(next); |
| } |
| im.storeIndex(item); |
| list.addFirst(item); |
| } |
| |
| protected synchronized void remove(IndexLinkedList list,IndexItem item) throws IOException { |
| IndexItem root = list.getRoot(); |
| IndexItem prev = list.getPrevEntry(item); |
| IndexItem next = list.getNextEntry(item); |
| list.remove(item); |
| |
| prev = prev == null ? root : prev; |
| next = (next == null || !next.equals(root)) ? next : null; |
| |
| if (next != null) { |
| prev.setNextItem(next.getOffset()); |
| next.setPreviousItem(prev.getOffset()); |
| im.updateIndexes(next); |
| } else { |
| prev.setNextItem(Item.POSITION_NOT_SET); |
| } |
| im.updateIndexes(prev); |
| } |
| } |