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Spring Framework example source code file (JmsNamespaceHandlerTests.java)

This example Spring Framework source code file (JmsNamespaceHandlerTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

componentdefinition, compositecomponentdefinition, compositecomponentdefinition, connectionfactory, defaultmessagelistenercontainer, iterator, messagelistener, messagelistener, parser, parser, testbean, textmessage, textmessage, toolingtestapplicationcontext, util

The Spring Framework JmsNamespaceHandlerTests.java source code

/*
 * Copyright 2002-2008 the original author or authors.
 * 
 * Licensed 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.springframework.jms.config;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import javax.jms.ConnectionFactory;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

import junit.framework.TestCase;
import org.easymock.MockControl;

import org.springframework.beans.BeansException;
import org.springframework.beans.TestBean;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.parsing.ComponentDefinition;
import org.springframework.beans.factory.parsing.CompositeComponentDefinition;
import org.springframework.beans.factory.parsing.EmptyReaderEventListener;
import org.springframework.beans.factory.parsing.PassThroughSourceExtractor;
import org.springframework.beans.factory.parsing.ReaderEventListener;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jca.endpoint.GenericMessageEndpointManager;
import org.springframework.jms.listener.DefaultMessageListenerContainer;
import org.springframework.jms.listener.endpoint.JmsMessageEndpointManager;

/**
 * @author Mark Fisher
 * @author Juergen Hoeller
 * @author Christian Dupuis
 */
public class JmsNamespaceHandlerTests extends TestCase {

	private static final String DEFAULT_CONNECTION_FACTORY = "connectionFactory";

	private static final String EXPLICIT_CONNECTION_FACTORY = "testConnectionFactory";

	private ToolingTestApplicationContext context;


	protected void setUp() throws Exception {
		this.context = new ToolingTestApplicationContext("jmsNamespaceHandlerTests.xml", getClass());
	}

	protected void tearDown() throws Exception {
		this.context.close();
	}


	public void testBeansCreated() {
		Map containers = context.getBeansOfType(DefaultMessageListenerContainer.class);
		assertEquals("Context should contain 3 JMS listener containers", 3, containers.size());

		containers = context.getBeansOfType(GenericMessageEndpointManager.class);
		assertEquals("Context should contain 3 JCA endpoint containers", 3, containers.size());
	}

	public void testContainerConfiguration() throws Exception {
		Map containers = context.getBeansOfType(DefaultMessageListenerContainer.class);
		ConnectionFactory defaultConnectionFactory = (ConnectionFactory) context.getBean(DEFAULT_CONNECTION_FACTORY);
		ConnectionFactory explicitConnectionFactory = (ConnectionFactory) context.getBean(EXPLICIT_CONNECTION_FACTORY);

		int defaultConnectionFactoryCount = 0;
		int explicitConnectionFactoryCount = 0;

		Iterator iter = containers.values().iterator();
		while (iter.hasNext()) {
			DefaultMessageListenerContainer container = (DefaultMessageListenerContainer) iter.next();
			if (container.getConnectionFactory().equals(defaultConnectionFactory)) {
				defaultConnectionFactoryCount++;
			}
			else if (container.getConnectionFactory().equals(explicitConnectionFactory)) {
				explicitConnectionFactoryCount++;
			}
		}

		assertEquals("1 container should have the default connectionFactory", 1, defaultConnectionFactoryCount);
		assertEquals("2 containers should have the explicit connectionFactory", 2, explicitConnectionFactoryCount);
	}

	public void testListeners() throws Exception {
		TestBean testBean1 = (TestBean) context.getBean("testBean1");
		TestBean testBean2 = (TestBean) context.getBean("testBean2");
		TestMessageListener testBean3 = (TestMessageListener) context.getBean("testBean3");

		assertNull(testBean1.getName());
		assertNull(testBean2.getName());
		assertNull(testBean3.message);

		MockControl control1 = MockControl.createControl(TextMessage.class);
		TextMessage message1 = (TextMessage) control1.getMock();
		control1.expectAndReturn(message1.getText(), "Test1");
		control1.replay();

		MessageListener listener1 = getListener("listener1");
		listener1.onMessage(message1);
		assertEquals("Test1", testBean1.getName());
		control1.verify();

		MockControl control2 = MockControl.createControl(TextMessage.class);
		TextMessage message2 = (TextMessage) control2.getMock();
		control2.expectAndReturn(message2.getText(), "Test2");
		control2.replay();

		MessageListener listener2 = getListener("listener2");
		listener2.onMessage(message2);
		assertEquals("Test2", testBean2.getName());
		control2.verify();

		MockControl control3 = MockControl.createControl(TextMessage.class);
		TextMessage message3 = (TextMessage) control3.getMock();
		control3.replay();

		MessageListener listener3 = getListener(DefaultMessageListenerContainer.class.getName() + "#0");
		listener3.onMessage(message3);
		assertSame(message3, testBean3.message);
		control3.verify();
	}

	private MessageListener getListener(String containerBeanName) {
		DefaultMessageListenerContainer container = (DefaultMessageListenerContainer) this.context.getBean(containerBeanName);
		return (MessageListener) container.getMessageListener();
	}

	public void testComponentRegistration() {
		assertTrue("Parser should have registered a component named 'listener1'", context.containsComponentDefinition("listener1"));
		assertTrue("Parser should have registered a component named 'listener2'", context.containsComponentDefinition("listener2"));
		assertTrue("Parser should have registered a component named 'listener3'", context.containsComponentDefinition("listener3"));
		assertTrue("Parser should have registered a component named '" + DefaultMessageListenerContainer.class.getName() + "#0'", 
			context.containsComponentDefinition(DefaultMessageListenerContainer.class.getName() + "#0"));
		assertTrue("Parser should have registered a component named '" + JmsMessageEndpointManager.class.getName() + "#0'", 
			context.containsComponentDefinition(JmsMessageEndpointManager.class.getName() + "#0"));
	}

	public void testSourceExtraction() {
		Iterator iterator = context.getRegisteredComponents();
		while (iterator.hasNext()) {
			ComponentDefinition compDef = (ComponentDefinition) iterator.next();
			if (compDef instanceof CompositeComponentDefinition) {
				assertNotNull("CompositeComponentDefinition '" + compDef.getName()+ "' has no source attachment", ((CompositeComponentDefinition) compDef).getSource());
			}
			validateComponentDefinition(compDef);
		}
	}

	private void validateComponentDefinition(ComponentDefinition compDef) {
		BeanDefinition[] beanDefs = compDef.getBeanDefinitions();
		for (int i = 0; i < beanDefs.length; i++) {
			if (beanDefs[i] instanceof AbstractBeanDefinition) {
				assertNotNull("AbstractBeanDefinition has no source attachment", ((AbstractBeanDefinition) beanDefs[i]).getSource());
			}
		}
	}


	public static class TestMessageListener implements MessageListener {

		public Message message;

		public void onMessage(Message message) {
			this.message = message;
		}
	}
	

	/**
	 * Internal extension that registers a {@link ReaderEventListener} to store
	 * registered {@link ComponentDefinition}s.
	 */
	private static class ToolingTestApplicationContext extends ClassPathXmlApplicationContext {
		
		private static final Set REGISTERED_COMPONENTS = new HashSet();
		
		public ToolingTestApplicationContext(String path, Class clazz)
				throws BeansException {
			super(path, clazz);
		}

		protected void initBeanDefinitionReader(
				XmlBeanDefinitionReader beanDefinitionReader) {
			beanDefinitionReader.setEventListener(new StoringReaderEventListener(REGISTERED_COMPONENTS));
			beanDefinitionReader.setSourceExtractor(new PassThroughSourceExtractor());
		}
		
		public boolean containsComponentDefinition(String name) {
			Iterator iterator = REGISTERED_COMPONENTS.iterator();
			while (iterator.hasNext()) {
				ComponentDefinition cd = (ComponentDefinition) iterator.next();
				if (cd instanceof CompositeComponentDefinition) {
					ComponentDefinition[] innerCds = ((CompositeComponentDefinition) cd)
							.getNestedComponents();
					for (int i = 0; i < innerCds.length; i++) {
						if (innerCds[i].getName().equals(name)) {
							return true;
						}
					}
				}
				else {
					if (cd.getName().equals(name)) {
						return true;
					}
				}
			}
			return false;
		}
		
		public Iterator getRegisteredComponents() {
			return REGISTERED_COMPONENTS.iterator();
		}
	}
	

	private static class StoringReaderEventListener extends EmptyReaderEventListener {
		
		protected Set registeredComponents = null;
		
		public StoringReaderEventListener(Set registeredComponents) {
			this.registeredComponents = registeredComponents;
			this.registeredComponents.clear();
		}
		
		public void componentRegistered(ComponentDefinition componentDefinition) {
			this.registeredComponents.add(componentDefinition);
		}
	}

}

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