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/**
*
* 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.tuscany.sdo.test;
import junit.framework.TestCase;
public class ImplSpecificTestCase extends TestCase {
public void testThreadSafeHashmapIsAvailable() {
// this will fail if using Java 1.4.x and the backport library has been removed from the classpath.
// It is here because ChangeSummaryImpl contains the same logic for finding a threadsafe hashmap implementation
// but it will fallback to a synchronized hashmap
// if no threadsafe hashmap is available, hence no test failure will occur, but a performance hit
// will. This test is here top show a failure with java 1.4 to ensure that no-one removes the backport
// dependency introduced for TUSCANY-1006.
assertNotNull(loadConcurrentHashMapClazz());
}
protected void setUp() throws Exception {
super.setUp();
}
private static String[] concurrentHashMapClazzNames = new String[] {
"java.util.concurrent.ConcurrentHashMap",
"edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap"};
private static Class loadConcurrentHashMapClazz()
{
Class mapClazz = null;
for (int i = 0; i < concurrentHashMapClazzNames.length; i++)
{
String concurrentHashMapClazzName = concurrentHashMapClazzNames[i];
try
{
mapClazz = Class.forName(concurrentHashMapClazzName, true, Thread.currentThread().getContextClassLoader());
}
catch (Exception ignored) {}
if (mapClazz != null)
{
break;
}
try
{
mapClazz = Class.forName(concurrentHashMapClazzName);
}
catch (Exception ignored) {}
if (mapClazz != null)
{
break;
}
}
// System.out.println("threadsafe hashmap = " + mapClazz.getName());
return mapClazz;
}
}
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