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Spring Framework example source code file (AutoProxyCreatorTests.java)

This example Spring Framework source code file (AutoProxyCreatorTests.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

factorybean, itestbean, itestbean, messagesource, mutablepropertyvalues, object, reflection, rootbeandefinition, staticapplicationcontext, staticapplicationcontext, testautoproxycreator, testautoproxycreator, testbean, testbean, testinterceptor

The Spring Framework AutoProxyCreatorTests.java source code

/*
 * Copyright 2002-2006 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.lang.reflect.Proxy;

import junit.framework.TestCase;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

import org.springframework.aop.TargetSource;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.ITestBean;
import org.springframework.beans.IndexedTestBean;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.TestBean;
import org.springframework.beans.factory.DummyFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.MessageSource;
import org.springframework.context.support.StaticApplicationContext;
import org.springframework.context.support.StaticMessageSource;

/**
 * @author Juergen Hoeller
 * @since 09.12.2003
 */
public class AutoProxyCreatorTests extends TestCase {

	public void testBeanNameAutoProxyCreator() {
		StaticApplicationContext sac = new StaticApplicationContext();
		sac.registerSingleton("testInterceptor", TestInterceptor.class);

		RootBeanDefinition proxyCreator = new RootBeanDefinition(BeanNameAutoProxyCreator.class);
		proxyCreator.getPropertyValues().addPropertyValue("interceptorNames", "testInterceptor");
		proxyCreator.getPropertyValues().addPropertyValue("beanNames", "singletonToBeProxied,innerBean,singletonFactoryToBeProxied");
		sac.getDefaultListableBeanFactory().registerBeanDefinition("beanNameAutoProxyCreator", proxyCreator);

		RootBeanDefinition bd = new RootBeanDefinition(TestBean.class, RootBeanDefinition.AUTOWIRE_BY_TYPE);
		RootBeanDefinition innerBean = new RootBeanDefinition(TestBean.class);
		bd.getPropertyValues().addPropertyValue("spouse", new BeanDefinitionHolder(innerBean, "innerBean"));
		sac.getDefaultListableBeanFactory().registerBeanDefinition("singletonToBeProxied", bd);

		sac.registerSingleton("singletonFactoryToBeProxied", DummyFactory.class);
		sac.registerSingleton("autowiredIndexedTestBean", IndexedTestBean.class);

		sac.refresh();

		MessageSource messageSource = (MessageSource) sac.getBean("messageSource");
		ITestBean singletonToBeProxied = (ITestBean) sac.getBean("singletonToBeProxied");
		assertFalse(Proxy.isProxyClass(messageSource.getClass()));
		assertTrue(Proxy.isProxyClass(singletonToBeProxied.getClass()));
		assertTrue(Proxy.isProxyClass(singletonToBeProxied.getSpouse().getClass()));

		// test whether autowiring succeeded with auto proxy creation
		assertEquals(sac.getBean("autowiredIndexedTestBean"), singletonToBeProxied.getNestedIndexedBean());

		TestInterceptor ti = (TestInterceptor) sac.getBean("testInterceptor");
		// already 2: getSpouse + getNestedIndexedBean calls above
		assertEquals(2, ti.nrOfInvocations);
		singletonToBeProxied.getName();
		singletonToBeProxied.getSpouse().getName();
		assertEquals(5, ti.nrOfInvocations);

		ITestBean tb = (ITestBean) sac.getBean("singletonFactoryToBeProxied");
		assertTrue(AopUtils.isJdkDynamicProxy(tb));
		assertEquals(5, ti.nrOfInvocations);
		tb.getAge();
		assertEquals(6, ti.nrOfInvocations);

		ITestBean tb2 = (ITestBean) sac.getBean("singletonFactoryToBeProxied");
		assertSame(tb, tb2);
		assertEquals(6, ti.nrOfInvocations);
		tb2.getAge();
		assertEquals(7, ti.nrOfInvocations);
	}

	public void testBeanNameAutoProxyCreatorWithFactoryBeanProxy() {
		StaticApplicationContext sac = new StaticApplicationContext();
		sac.registerSingleton("testInterceptor", TestInterceptor.class);

		RootBeanDefinition proxyCreator = new RootBeanDefinition(BeanNameAutoProxyCreator.class);
		proxyCreator.getPropertyValues().addPropertyValue("interceptorNames", "testInterceptor");
		proxyCreator.getPropertyValues().addPropertyValue("beanNames", "singletonToBeProxied,&singletonFactoryToBeProxied");
		sac.getDefaultListableBeanFactory().registerBeanDefinition("beanNameAutoProxyCreator", proxyCreator);

		RootBeanDefinition bd = new RootBeanDefinition(TestBean.class);
		sac.getDefaultListableBeanFactory().registerBeanDefinition("singletonToBeProxied", bd);

		sac.registerSingleton("singletonFactoryToBeProxied", DummyFactory.class);

		sac.refresh();

		ITestBean singletonToBeProxied = (ITestBean) sac.getBean("singletonToBeProxied");
		assertTrue(Proxy.isProxyClass(singletonToBeProxied.getClass()));

		TestInterceptor ti = (TestInterceptor) sac.getBean("testInterceptor");
		assertEquals(0, ti.nrOfInvocations);
		singletonToBeProxied.getName();
		assertEquals(1, ti.nrOfInvocations);

		FactoryBean factory = (FactoryBean) sac.getBean("&singletonFactoryToBeProxied");
		assertTrue(Proxy.isProxyClass(factory.getClass()));
		TestBean tb = (TestBean) sac.getBean("singletonFactoryToBeProxied");
		assertFalse(AopUtils.isAopProxy(tb));
		assertEquals(3, ti.nrOfInvocations);
		tb.getAge();
		assertEquals(3, ti.nrOfInvocations);
	}

	public void testCustomAutoProxyCreator() {
		StaticApplicationContext sac = new StaticApplicationContext();
		sac.registerSingleton("testAutoProxyCreator", TestAutoProxyCreator.class);
		sac.registerSingleton("singletonNoInterceptor", TestBean.class);
		sac.registerSingleton("singletonToBeProxied", TestBean.class);
		sac.registerPrototype("prototypeToBeProxied", TestBean.class);
		sac.refresh();

		MessageSource messageSource = (MessageSource) sac.getBean("messageSource");
		ITestBean singletonNoInterceptor = (ITestBean) sac.getBean("singletonNoInterceptor");
		ITestBean singletonToBeProxied = (ITestBean) sac.getBean("singletonToBeProxied");
		ITestBean prototypeToBeProxied = (ITestBean) sac.getBean("prototypeToBeProxied");
		assertFalse(AopUtils.isCglibProxy(messageSource));
		assertTrue(AopUtils.isCglibProxy(singletonNoInterceptor));
		assertTrue(AopUtils.isCglibProxy(singletonToBeProxied));
		assertTrue(AopUtils.isCglibProxy(prototypeToBeProxied));

		TestAutoProxyCreator tapc = (TestAutoProxyCreator) sac.getBean("testAutoProxyCreator");
		assertEquals(0, tapc.testInterceptor.nrOfInvocations);
		singletonNoInterceptor.getName();
		assertEquals(0, tapc.testInterceptor.nrOfInvocations);
		singletonToBeProxied.getAge();
		assertEquals(1, tapc.testInterceptor.nrOfInvocations);
		prototypeToBeProxied.getSpouse();
		assertEquals(2, tapc.testInterceptor.nrOfInvocations);
	}

	public void testAutoProxyCreatorWithFactoryBean() {
		StaticApplicationContext sac = new StaticApplicationContext();
		sac.registerSingleton("testAutoProxyCreator", TestAutoProxyCreator.class);
		sac.registerSingleton("singletonFactoryToBeProxied", DummyFactory.class);
		sac.refresh();

		TestAutoProxyCreator tapc = (TestAutoProxyCreator) sac.getBean("testAutoProxyCreator");
		tapc.testInterceptor.nrOfInvocations = 0;

		FactoryBean factory = (FactoryBean) sac.getBean("&singletonFactoryToBeProxied");
		assertTrue(AopUtils.isCglibProxy(factory));

		TestBean tb = (TestBean) sac.getBean("singletonFactoryToBeProxied");
		assertTrue(AopUtils.isCglibProxy(tb));
		assertEquals(2, tapc.testInterceptor.nrOfInvocations);
		tb.getAge();
		assertEquals(3, tapc.testInterceptor.nrOfInvocations);
	}

	public void testAutoProxyCreatorWithFactoryBeanAndPrototype() {
		StaticApplicationContext sac = new StaticApplicationContext();
		sac.registerSingleton("testAutoProxyCreator", TestAutoProxyCreator.class);

		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue("singleton", "false");
		sac.registerSingleton("prototypeFactoryToBeProxied", DummyFactory.class, pvs);

		sac.refresh();

		TestAutoProxyCreator tapc = (TestAutoProxyCreator) sac.getBean("testAutoProxyCreator");
		tapc.testInterceptor.nrOfInvocations = 0;

		FactoryBean prototypeFactory = (FactoryBean) sac.getBean("&prototypeFactoryToBeProxied");
		assertTrue(AopUtils.isCglibProxy(prototypeFactory));
		TestBean tb = (TestBean) sac.getBean("prototypeFactoryToBeProxied");
		assertTrue(AopUtils.isCglibProxy(tb));

		assertEquals(2, tapc.testInterceptor.nrOfInvocations);
		tb.getAge();
		assertEquals(3, tapc.testInterceptor.nrOfInvocations);
	}

	public void testAutoProxyCreatorWithFactoryBeanAndProxyObjectOnly() {
		StaticApplicationContext sac = new StaticApplicationContext();

		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue("proxyFactoryBean", "false");
		sac.registerSingleton("testAutoProxyCreator", TestAutoProxyCreator.class, pvs);

		sac.registerSingleton("singletonFactoryToBeProxied", DummyFactory.class);

		sac.refresh();

		TestAutoProxyCreator tapc = (TestAutoProxyCreator) sac.getBean("testAutoProxyCreator");
		tapc.testInterceptor.nrOfInvocations = 0;

		FactoryBean factory = (FactoryBean) sac.getBean("&singletonFactoryToBeProxied");
		assertFalse(AopUtils.isAopProxy(factory));

		TestBean tb = (TestBean) sac.getBean("singletonFactoryToBeProxied");
		assertTrue(AopUtils.isCglibProxy(tb));
		assertEquals(0, tapc.testInterceptor.nrOfInvocations);
		tb.getAge();
		assertEquals(1, tapc.testInterceptor.nrOfInvocations);

		TestBean tb2 = (TestBean) sac.getBean("singletonFactoryToBeProxied");
		assertSame(tb, tb2);
		assertEquals(1, tapc.testInterceptor.nrOfInvocations);
		tb2.getAge();
		assertEquals(2, tapc.testInterceptor.nrOfInvocations);
	}

	public void testAutoProxyCreatorWithFactoryBeanAndProxyFactoryBeanOnly() {
		StaticApplicationContext sac = new StaticApplicationContext();

		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue("proxyObject", "false");
		sac.registerSingleton("testAutoProxyCreator", TestAutoProxyCreator.class, pvs);

		pvs = new MutablePropertyValues();
		pvs.addPropertyValue("singleton", "false");
		sac.registerSingleton("prototypeFactoryToBeProxied", DummyFactory.class, pvs);

		sac.refresh();

		TestAutoProxyCreator tapc = (TestAutoProxyCreator) sac.getBean("testAutoProxyCreator");
		tapc.testInterceptor.nrOfInvocations = 0;

		FactoryBean prototypeFactory = (FactoryBean) sac.getBean("&prototypeFactoryToBeProxied");
		assertTrue(AopUtils.isCglibProxy(prototypeFactory));
		TestBean tb = (TestBean) sac.getBean("prototypeFactoryToBeProxied");
		assertFalse(AopUtils.isCglibProxy(tb));

		assertEquals(2, tapc.testInterceptor.nrOfInvocations);
		tb.getAge();
		assertEquals(2, tapc.testInterceptor.nrOfInvocations);
	}


	public static class TestAutoProxyCreator extends AbstractAutoProxyCreator {

		private boolean proxyFactoryBean = true;

		private boolean proxyObject = true;

		public TestInterceptor testInterceptor = new TestInterceptor();

		public TestAutoProxyCreator() {
			setProxyTargetClass(true);
			setOrder(0);
		}

		public void setProxyFactoryBean(boolean proxyFactoryBean) {
			this.proxyFactoryBean = proxyFactoryBean;
		}

		public void setProxyObject(boolean proxyObject) {
			this.proxyObject = proxyObject;
		}

		protected Object[] getAdvicesAndAdvisorsForBean(Class beanClass, String name, TargetSource customTargetSource) {
			if (StaticMessageSource.class.equals(beanClass)) {
				return DO_NOT_PROXY;
			}
			else if (name.endsWith("ToBeProxied")) {
				boolean isFactoryBean = FactoryBean.class.isAssignableFrom(beanClass);
				if ((this.proxyFactoryBean && isFactoryBean) || (this.proxyObject && !isFactoryBean)) {
					return new Object[] {this.testInterceptor};
				}
				else {
					return DO_NOT_PROXY;
				}
			}
			else {
				return PROXY_WITHOUT_ADDITIONAL_INTERCEPTORS;
			}
		}
	}


	/**
	 * Interceptor that counts the number of non-finalize method calls.
	 */
	public static class TestInterceptor implements MethodInterceptor {

		public int nrOfInvocations = 0;

		public Object invoke(MethodInvocation invocation) throws Throwable {
			if (!invocation.getMethod().getName().equals("finalize")) {
				this.nrOfInvocations++;
			}
			return invocation.proceed();
		}
	}

}

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