Spring Framework example source code file (ConcurrentBeanFactoryTests.java)

This example Spring Framework source code file (ConcurrentBeanFactoryTests.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

classpathresource, concurrentbean, concurrentbean, concurrentbeanfactorytests, customdateeditor, date, date, simpledateformat, testrun, testrun, text, thread, throwable, util, xmlbeanfactory, xmlbeanfactory

The Spring Framework ConcurrentBeanFactoryTests.java source code

/*
 * Copyright 2002-2007 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.beans.factory;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Collections;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

import junit.framework.TestCase;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.core.io.ClassPathResource;

/**
 * @author Guillaume Poirier
 * @author Juergen Hoeller
 * @since 10.03.2004
 */
public class ConcurrentBeanFactoryTests extends TestCase {

	private static final Log logger = LogFactory.getLog(ConcurrentBeanFactoryTests.class);

	private static final SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd");

	private static final Date date1;

	private static final Date date2;

	static {
		try {
			date1 = df.parse("2004/08/08");
			date2 = df.parse("2000/02/02");
		}
		catch (ParseException e) {
			throw new RuntimeException(e);
		}
	}

	private BeanFactory factory;

	private Set set = Collections.synchronizedSet(new HashSet());

	private Throwable ex = null;

	protected void setUp() throws Exception {
		XmlBeanFactory factory = new XmlBeanFactory(new ClassPathResource("concurrent.xml", getClass()));
		CustomDateEditor editor = new CustomDateEditor(df, false);
		factory.registerCustomEditor(Date.class, editor);
		this.factory = factory;
	}

	public void testSingleThread() {
		for (int i = 0; i < 100; i++) {
			performTest();
		}
	}

	public void testConcurrent() {
		for (int i = 0; i < 100; i++) {
			TestRun run = new TestRun();
			run.setDaemon(true);
			set.add(run);
		}
		for (Iterator it = new HashSet(set).iterator(); it.hasNext();) {
			TestRun run = (TestRun) it.next();
			run.start();
		}
		logger.info("Thread creation over, " + set.size() + " still active.");
		synchronized (set) {
			while (!set.isEmpty() && ex == null) {
				try {
					set.wait();
				}
				catch (InterruptedException e) {
					logger.info(e.toString());
				}
				logger.info(set.size() + " threads still active.");
			}
		}
		if (ex != null) {
			fail(ex.getMessage());
		}
	}

	private void performTest() {
		ConcurrentBean b1 = (ConcurrentBean) factory.getBean("bean1");
		ConcurrentBean b2 = (ConcurrentBean) factory.getBean("bean2");

		assertEquals(b1.getDate(), date1);
		assertEquals(b2.getDate(), date2);
	}


	private class TestRun extends Thread {

		public void run() {
			try {
				for (int i = 0; i < 10000; i++) {
					performTest();
				}
			}
			catch (Throwable e) {
				ex = e;
			}
			finally {
				synchronized (set) {
					set.remove(this);
					set.notifyAll();
				}
			}
		}
	}


	public static class ConcurrentBean {

		private Date date;

		public Date getDate() {
			return date;
		}

		public void setDate(Date date) {
			this.date = date;
		}
	}

}