Spring Framework example source code file (BeanNameAutoProxyCreatorTests.java)

This example Spring Framework source code file (BeanNameAutoProxyCreatorTests.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

countingbeforeadvice, introduction, io, ioexception, itestbean, itestbean, lockable, lockable, lockedexception, mixin, nopinterceptor, nopinterceptor, testbean, timestamped, timestamped

The Spring Framework BeanNameAutoProxyCreatorTests.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.aop.framework.autoproxy;

import java.io.IOException;

import junit.framework.TestCase;

import org.springframework.aop.framework.Advised;
import org.springframework.aop.framework.CountingBeforeAdvice;
import org.springframework.aop.framework.Lockable;
import org.springframework.aop.framework.LockedException;
import org.springframework.aop.framework.TimeStamped;
import org.springframework.aop.interceptor.NopInterceptor;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.ITestBean;
import org.springframework.beans.TestBean;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author Rod Johnson
 * @author Rob Harrop
 */
public class BeanNameAutoProxyCreatorTests extends TestCase {

	private BeanFactory beanFactory;

	protected void setUp() throws IOException {
		// Note that we need an ApplicationContext, not just a BeanFactory,
		// for post-processing and hence auto-proxying to work.
		this.beanFactory = new ClassPathXmlApplicationContext("beanNameAutoProxyCreatorTests.xml", getClass());
	}

	public void testNoProxy() {
		TestBean tb = (TestBean) beanFactory.getBean("noproxy");
		assertFalse(AopUtils.isAopProxy(tb));
		assertEquals("noproxy", tb.getName());
	}

	public void testJdkProxyWithExactNameMatch() {
		ITestBean tb = (ITestBean) beanFactory.getBean("onlyJdk");
		jdkAssertions(tb, 1);
		assertEquals("onlyJdk", tb.getName());
	}

	public void testJdkProxyWithDoubleProxying() {
		ITestBean tb = (ITestBean) beanFactory.getBean("doubleJdk");
		jdkAssertions(tb, 2);
		assertEquals("doubleJdk", tb.getName());
	}

	public void testJdkIntroduction() {
		ITestBean tb = (ITestBean) beanFactory.getBean("introductionUsingJdk");
		NopInterceptor nop = (NopInterceptor) beanFactory.getBean("introductionNopInterceptor");
		assertEquals(0, nop.getCount());
		assertTrue(AopUtils.isJdkDynamicProxy(tb));
		int age = 5;
		tb.setAge(age);
		assertEquals(age, tb.getAge());
		assertTrue("Introduction was made", tb instanceof TimeStamped);
		assertEquals(0, ((TimeStamped) tb).getTimeStamp());
		assertEquals(3, nop.getCount());		
		assertEquals("introductionUsingJdk", tb.getName());

		ITestBean tb2 = (ITestBean) beanFactory.getBean("second-introductionUsingJdk");

		// Check two per-instance mixins were distinct
		Lockable lockable1 = (Lockable) tb;
		Lockable lockable2 = (Lockable) tb2;
		assertFalse(lockable1.locked());
		assertFalse(lockable2.locked());
		tb.setAge(65);
		assertEquals(65, tb.getAge());
		lockable1.lock();
		assertTrue(lockable1.locked());
		// Shouldn't affect second
		assertFalse(lockable2.locked());
		// Can still mod second object
		tb2.setAge(12);
		// But can't mod first
		try {
			tb.setAge(6);
			fail("Mixin should have locked this object");
		}
		catch (LockedException ex) {
			// Ok
		}
	}

	public void testJdkIntroductionAppliesToCreatedObjectsNotFactoryBean() {
		ITestBean tb = (ITestBean) beanFactory.getBean("factory-introductionUsingJdk");
		NopInterceptor nop = (NopInterceptor) beanFactory.getBean("introductionNopInterceptor");
		assertEquals("NOP should not have done any work yet", 0, nop.getCount());
		assertTrue(AopUtils.isJdkDynamicProxy(tb));
		int age = 5;
		tb.setAge(age);
		assertEquals(age, tb.getAge());
		assertTrue("Introduction was made", tb instanceof TimeStamped);
		assertEquals(0, ((TimeStamped) tb).getTimeStamp());
		assertEquals(3, nop.getCount());		
	
		ITestBean tb2 = (ITestBean) beanFactory.getBean("second-introductionUsingJdk");
			
		// Check two per-instance mixins were distinct
		Lockable lockable1 = (Lockable) tb;
		Lockable lockable2 = (Lockable) tb2;
		assertFalse(lockable1.locked());
		assertFalse(lockable2.locked());
		tb.setAge(65);
		assertEquals(65, tb.getAge());
		lockable1.lock();
		assertTrue(lockable1.locked());
		// Shouldn't affect second
		assertFalse(lockable2.locked());
		// Can still mod second object
		tb2.setAge(12);
		// But can't mod first
		try {
			tb.setAge(6);
			fail("Mixin should have locked this object");
		}
		catch (LockedException ex) {
			// Ok
		}
	}

	public void testJdkProxyWithWildcardMatch() {
		ITestBean tb = (ITestBean) beanFactory.getBean("jdk1");
		jdkAssertions(tb, 1);
		assertEquals("jdk1", tb.getName());
	}

	public void testCglibProxyWithWildcardMatch() {
		TestBean tb = (TestBean) beanFactory.getBean("cglib1");
		cglibAssertions(tb);
		assertEquals("cglib1", tb.getName());
	}

	public void testWithFrozenProxy() {
		ITestBean testBean = (ITestBean) beanFactory.getBean("frozenBean");
		assertTrue(((Advised)testBean).isFrozen());
	}

	private void jdkAssertions(ITestBean tb, int nopInterceptorCount)  {
		NopInterceptor nop = (NopInterceptor) beanFactory.getBean("nopInterceptor");
		assertEquals(0, nop.getCount());
		assertTrue(AopUtils.isJdkDynamicProxy(tb));
		int age = 5;
		tb.setAge(age);
		assertEquals(age, tb.getAge());
		assertEquals(2 * nopInterceptorCount, nop.getCount());
	}

	/**
	 * Also has counting before advice.
	 */
	private void cglibAssertions(TestBean tb) {
		CountingBeforeAdvice cba = (CountingBeforeAdvice) beanFactory.getBean("countingBeforeAdvice");
		NopInterceptor nop = (NopInterceptor) beanFactory.getBean("nopInterceptor");
		assertEquals(0, cba.getCalls());
		assertEquals(0, nop.getCount());
		assertTrue(AopUtils.isCglibProxy(tb));
		int age = 5;
		tb.setAge(age);
		assertEquals(age, tb.getAge());
		assertEquals(2, nop.getCount());
		assertEquals(2, cba.getCalls());		
	}

}