/**
* 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.store.kahadb.disk.index;
import java.io.File;
import java.io.IOException;
import junit.framework.TestCase;
import org.apache.activemq.store.kahadb.disk.page.PageFile;
import org.apache.activemq.store.kahadb.disk.page.Transaction;
import org.apache.activemq.util.IOHelper;
import org.junit.After;
import org.junit.Test;
/**
* Test a HashIndex
*/
public abstract class IndexTestSupport extends TestCase {
private static final int COUNT = 10000;
protected Index<String,Long> index;
protected File directory;
protected PageFile pf;
protected Transaction tx;
@Override
@After
public void tearDown() throws Exception {
if( pf!=null ) {
pf.unload();
pf.delete();
}
}
public File getDirectory() {
if (directory != null) {
IOHelper.delete(directory);
}
directory = new File(IOHelper.getDefaultDataDirectory() + System.currentTimeMillis());
IOHelper.delete(directory);
return directory;
}
protected void createPageFileAndIndex(int pageSize) throws Exception {
pf = new PageFile(getDirectory(), getClass().getName());
pf.setPageSize(pageSize);
pf.load();
tx = pf.tx();
this.index = createIndex();
}
abstract protected Index<String, Long> createIndex() throws Exception;
@Test(timeout=60000)
public void testIndex() throws Exception {
createPageFileAndIndex(500);
this.index.load(tx);
tx.commit();
doInsert(COUNT);
this.index.unload(tx);
tx.commit();
this.index.load(tx);
tx.commit();
checkRetrieve(COUNT);
doRemove(COUNT);
this.index.unload(tx);
tx.commit();
this.index.load(tx);
tx.commit();
doInsert(COUNT);
doRemoveHalf(COUNT);
doInsertHalf(COUNT);
this.index.unload(tx);
tx.commit();
this.index.load(tx);
tx.commit();
checkRetrieve(COUNT);
this.index.unload(tx);
tx.commit();
}
void doInsert(int count) throws Exception {
for (int i = 0; i < count; i++) {
index.put(tx, key(i), (long)i);
tx.commit();
}
}
protected String key(int i) {
return "key:"+i;
}
void checkRetrieve(int count) throws IOException {
for (int i = 0; i < count; i++) {
Long item = index.get(tx, key(i));
assertNotNull("Key missing: "+key(i), item);
}
}
void doRemoveHalf(int count) throws Exception {
for (int i = 0; i < count; i++) {
if (i % 2 == 0) {
assertNotNull("Expected remove to return value for index "+i, index.remove(tx, key(i)));
tx.commit();
}
}
}
void doInsertHalf(int count) throws Exception {
for (int i = 0; i < count; i++) {
if (i % 2 == 0) {
index.put(tx, key(i), (long)i);
tx.commit();
}
}
}
void doRemove(int count) throws Exception {
for (int i = 0; i < count; i++) {
assertNotNull("Expected remove to return value for index "+i, index.remove(tx, key(i)));
tx.commit();
}
for (int i = 0; i < count; i++) {
Long item = index.get(tx, key(i));
assertNull(item);
}
}
void doRemoveBackwards(int count) throws Exception {
for (int i = count - 1; i >= 0; i--) {
index.remove(tx, key(i));
tx.commit();
}
for (int i = 0; i < count; i++) {
Long item = index.get(tx, key(i));
assertNull(item);
}
}
}