1 files changed, 74 insertions, 0 deletions
diff --git a/sdo-java/branches/sdo-1.1-incubating/impl/src/test/java/org/apache/tuscany/sdo/test/ImplSpecificTestCase.java b/sdo-java/branches/sdo-1.1-incubating/impl/src/test/java/org/apache/tuscany/sdo/test/ImplSpecificTestCase.java
new file mode 100644
index 0000000000..d5117c3fed
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+++ b/sdo-java/branches/sdo-1.1-incubating/impl/src/test/java/org/apache/tuscany/sdo/test/ImplSpecificTestCase.java
@@ -0,0 +1,74 @@
+/**
+ *
+ *  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;
+    }
+
+}