1 files changed, 122 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/databinding-jaxb/src/test/java/org/apache/tuscany/sca/databinding/jaxb/JAXBContextCacheTestCase.java b/sca-java-2.x/tags/2.0.1-RC1/modules/databinding-jaxb/src/test/java/org/apache/tuscany/sca/databinding/jaxb/JAXBContextCacheTestCase.java
new file mode 100644
index 0000000000..9dd5892f7c
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+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/databinding-jaxb/src/test/java/org/apache/tuscany/sca/databinding/jaxb/JAXBContextCacheTestCase.java
@@ -0,0 +1,122 @@
+/*
+ * 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.sca.databinding.jaxb;
+
+import java.io.StringReader;
+import java.io.StringWriter;
+
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.JAXBException;
+import javax.xml.namespace.QName;
+import javax.xml.transform.Source;
+import javax.xml.transform.stream.StreamSource;
+
+import org.apache.tuscany.sca.common.java.collection.LRUCache;
+import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.example.ipo.jaxb.Address;
+import com.example.ipo.jaxb.PurchaseOrderType;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class JAXBContextCacheTestCase {
+    @Test
+    public void testCache() throws JAXBException {
+        JAXBContextCache cache = new JAXBContextCache(new DefaultExtensionPointRegistry());
+        JAXBContext context1 = cache.getJAXBContext(String.class);
+        JAXBContext context2 = cache.getJAXBContext(int.class);
+        JAXBContext context3 = cache.getJAXBContext(String[].class);
+        JAXBContext context4 = cache.getJAXBContext(Source.class);
+        Assert.assertSame(context1, context2);
+        Assert.assertNotSame(context2, context3);
+        Assert.assertSame(context1, context4);
+
+        QName name = new QName("http://example.com/ns1", "e1");
+        JAXBElement<String> element = new JAXBElement<String>(name, String.class, "123");
+        StringWriter sw = new StringWriter();
+        context4.createMarshaller().marshal(element, sw);
+        StreamSource source = new StreamSource(new StringReader(sw.toString()), null);
+        context4.createUnmarshaller().unmarshal(source, String.class);
+
+        JAXBContext context5 = cache.getJAXBContext(Address.class);
+        JAXBContext context6 = cache.getJAXBContext(PurchaseOrderType.class);
+        Assert.assertSame(context5, context6);
+    }
+
+    @Test
+    public void testLRUCache() {
+        LRUCache<String, String> cache = new LRUCache<String, String>(3);
+        cache.put("1", "A");
+        Assert.assertEquals(1, cache.size());
+        cache.put("2", "B");
+        Assert.assertEquals(2, cache.size());
+        cache.put("3", "C");
+        Assert.assertEquals(3, cache.size());
+        cache.put("4", "D");
+        Assert.assertEquals(3, cache.size());
+        String data = cache.get("1");
+        Assert.assertNull(data);
+        data = cache.get("2");
+        Assert.assertEquals("B", data);
+        cache.put("5", "E");
+        data = cache.get("2");
+        Assert.assertEquals("B", data);
+    }
+
+    @Test
+    public void testPerf() throws JAXBException {
+        JAXBContextCache cache = new JAXBContextCache(new DefaultExtensionPointRegistry());
+        
+        // Test JAXBContext for simple java classes
+        long start = System.currentTimeMillis();
+        for (int i = 0; i < 100; i++) {
+            JAXBContext context = JAXBContext.newInstance(String.class);
+        }
+        long end = System.currentTimeMillis();
+        long d1 = end - start;
+        start = System.currentTimeMillis();
+        for (int i = 0; i < 100; i++) {
+            JAXBContext context = cache.getJAXBContext(String.class);
+        }
+        end = System.currentTimeMillis();
+        long d2 = end - start;
+        System.out.println(d1 + "ms vs. " + d2 + "ms");
+        
+        // Test JAXBContext for generated JAXB classes
+        start = System.currentTimeMillis();
+        for (int i = 0; i < 20; i++) {
+            JAXBContext context = JAXBContext.newInstance(PurchaseOrderType.class);
+        }
+        end = System.currentTimeMillis();
+        d1 = end - start;
+        start = System.currentTimeMillis();
+        for (int i = 0; i < 20; i++) {
+            JAXBContext context = cache.getJAXBContext(PurchaseOrderType.class);
+        }
+        end = System.currentTimeMillis();
+        d2 = end - start;
+        System.out.println(d1 + "ms vs. " + d2 + "ms");
+
+    }
+}