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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.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");
}
}
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