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ActiveMQ example source code file (HashTest.java)
The ActiveMQ HashTest.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.index.hash; import java.io.File; import java.io.IOException; import java.util.concurrent.atomic.AtomicLong; import junit.framework.TestCase; import org.apache.activemq.kaha.Store; import org.apache.activemq.kaha.impl.index.IndexItem; import org.apache.activemq.kaha.impl.index.IndexManager; import org.apache.activemq.util.IOHelper; /** * Test a HashIndex */ public class HashTest extends TestCase { private static final int COUNT = 10000; private HashIndex hashIndex; private File directory; private IndexManager indexManager; /** * @throws java.lang.Exception * @see junit.framework.TestCase#setUp() */ protected void setUp() throws Exception { super.setUp(); directory = new File(IOHelper.getDefaultDataDirectory()); IOHelper.mkdirs(directory); IOHelper.deleteChildren(directory); indexManager = new IndexManager(directory, "im-hash-test", "rw", null, new AtomicLong()); this.hashIndex = new HashIndex(directory, "testHash", indexManager); this.hashIndex.setNumberOfBins(12); this.hashIndex.setPageSize(32 * 1024); this.hashIndex.setKeyMarshaller(Store.STRING_MARSHALLER); } public void testHashIndex() throws Exception { doTest(300); hashIndex.clear(); hashIndex.unload(); doTest(600); hashIndex.clear(); hashIndex.unload(); doTest(128); } public void doTest(int pageSize) throws Exception { String keyRoot = "key:"; hashIndex.setPageSize(pageSize); this.hashIndex.load(); doInsert(keyRoot); this.hashIndex.unload(); this.hashIndex.load(); checkRetrieve(keyRoot); doRemove(keyRoot); this.hashIndex.unload(); this.hashIndex.load(); doInsert(keyRoot); doRemoveHalf(keyRoot); doInsertHalf(keyRoot); this.hashIndex.unload(); this.hashIndex.load(); checkRetrieve(keyRoot); this.hashIndex.unload(); } void doInsert(String keyRoot) throws Exception { for (int i = 0; i < COUNT; i++) { IndexItem value = indexManager.createNewIndex(); indexManager.storeIndex(value); hashIndex.store(keyRoot + i, value); } } void checkRetrieve(String keyRoot) throws IOException { for (int i = 0; i < COUNT; i++) { IndexItem item = (IndexItem) hashIndex.get(keyRoot + i); assertNotNull(item); } } void doRemoveHalf(String keyRoot) throws Exception { for (int i = 0; i < COUNT; i++) { if (i % 2 == 0) { hashIndex.remove(keyRoot + i); } } } void doInsertHalf(String keyRoot) throws Exception { for (int i = 0; i < COUNT; i++) { if (i % 2 == 0) { IndexItem value = indexManager.createNewIndex(); indexManager.storeIndex(value); hashIndex.store(keyRoot + i, value); } } } void doRemove(String keyRoot) throws Exception { for (int i = 0; i < COUNT; i++) { hashIndex.remove(keyRoot + i); } for (int i = 0; i < COUNT; i++) { IndexItem item = (IndexItem) hashIndex.get(keyRoot + i); assertNull(item); } } void doRemoveBackwards(String keyRoot) throws Exception { for (int i = COUNT - 1; i >= 0; i--) { hashIndex.remove(keyRoot + i); } for (int i = 0; i < COUNT; i++) { IndexItem item = (IndexItem) hashIndex.get(keyRoot + i); assertNull(item); } } /** * @throws java.lang.Exception * @see junit.framework.TestCase#tearDown() */ protected void tearDown() throws Exception { super.tearDown(); File[] files = directory.listFiles(); for (File file : files) { file.delete(); } } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ HashTest.java source code file: |
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