xmlbeanfactorytests.java

spring的源代码

/*
 * Copyright 2002-2005 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.xml;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.lang.reflect.Method;
import java.net.URL;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;

import javax.mail.Session;
import javax.servlet.ServletException;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import org.xml.sax.InputSource;

import org.springframework.beans.DerivedTestBean;
import org.springframework.beans.FatalBeanException;
import org.springframework.beans.ITestBean;
import org.springframework.beans.IndexedTestBean;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.ResourceTestBean;
import org.springframework.beans.TestBean;
import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.BeanCurrentlyInCreationException;
import org.springframework.beans.factory.BeanDefinitionStoreException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanIsAbstractException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.DummyFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.UnsatisfiedDependencyException;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.MethodReplacer;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.core.io.UrlResource;
import org.springframework.core.io.support.EncodedResource;
import org.springframework.util.FileCopyUtils;
import org.springframework.util.SerializationTestUtils;
import org.springframework.util.StopWatch;

/**
 * Miscellaneous tests for XML bean definitions.
 *
 * @author Juergen Hoeller
 * @author Rod Johnson
 */
public class XmlBeanFactoryTests extends TestCase {

	public void testRefToSeparatePrototypeInstances() throws Exception {
		DefaultListableBeanFactory xbf = new DefaultListableBeanFactory();
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(xbf);
		reader.setValidating(false);
		reader.loadBeanDefinitions(new ClassPathResource("reftypes.xml", getClass()));

		assertTrue("7 beans in reftypes, not " + xbf.getBeanDefinitionCount(), xbf.getBeanDefinitionCount() == 7);
		TestBean emma = (TestBean) xbf.getBean("emma");
		TestBean georgia = (TestBean) xbf.getBean("georgia");
		ITestBean emmasJenks = emma.getSpouse();
		ITestBean georgiasJenks = georgia.getSpouse();
		assertTrue("Emma and georgia think they have a different boyfriend", emmasJenks != georgiasJenks);
		assertTrue("Emmas jenks has right name", emmasJenks.getName().equals("Andrew"));
		assertTrue("Emmas doesn't equal new ref", emmasJenks != xbf.getBean("jenks"));
		assertTrue("Georgias jenks has right name", emmasJenks.getName().equals("Andrew"));
		assertTrue("They are object equal", emmasJenks.equals(georgiasJenks));
		assertTrue("They object equal direct ref", emmasJenks.equals(xbf.getBean("jenks")));
	}

	public void testRefToSingleton() throws Exception {
		DefaultListableBeanFactory xbf = new DefaultListableBeanFactory();
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(xbf);
		reader.setValidating(false);
		Resource resource = new ClassPathResource("reftypes.xml", getClass());
		reader.loadBeanDefinitions(new EncodedResource(resource, "ISO-8859-1"));

		assertTrue("7 beans in reftypes, not " + xbf.getBeanDefinitionCount(), xbf.getBeanDefinitionCount() == 7);
		TestBean jen = (TestBean) xbf.getBean("jenny");
		TestBean dave = (TestBean) xbf.getBean("david");
		TestBean jenks = (TestBean) xbf.getBean("jenks");
		ITestBean davesJen = dave.getSpouse();
		ITestBean jenksJen = jenks.getSpouse();
		assertTrue("1 jen instance", davesJen == jenksJen);
		assertTrue("1 jen instance", davesJen == jen);
	}

	public void testInnerBeans() throws IOException {
		DefaultListableBeanFactory xbf = new DefaultListableBeanFactory();
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(xbf);
		reader.setValidating(false);
		InputStream inputStream = getClass().getResourceAsStream("reftypes.xml");
		try {
			reader.loadBeanDefinitions(new InputSource(inputStream));
		}
		finally {
			inputStream.close();
		}

		TestBean hasInnerBeans = (TestBean) xbf.getBean("hasInnerBeans");
		assertEquals(5, hasInnerBeans.getAge());
		TestBean inner1 = (TestBean) hasInnerBeans.getSpouse();
		assertNotNull(inner1);
		assertEquals("innerBean", inner1.getBeanName());
		assertEquals("inner1", inner1.getName());
		assertEquals(6, inner1.getAge());

		assertNotNull(hasInnerBeans.getFriends());
		Object[] friends = hasInnerBeans.getFriends().toArray();
		assertEquals(3, friends.length);
		DerivedTestBean inner2 = (DerivedTestBean) friends[0];
		assertEquals("inner2", inner2.getName());
		assertTrue(inner2.getBeanName().startsWith(DerivedTestBean.class.getName()));
		assertFalse(xbf.containsBean("innerBean"));
		assertNotNull(inner2);
		assertEquals(7, inner2.getAge());
		TestBean innerFactory = (TestBean) friends[1];
		assertEquals(DummyFactory.SINGLETON_NAME, innerFactory.getName());
		TestBean inner5 = (TestBean) friends[2];
		assertEquals("innerBean", inner5.getBeanName());

		assertNotNull(hasInnerBeans.getSomeMap());
		assertEquals(2, hasInnerBeans.getSomeMap().size());
		TestBean inner3 = (TestBean) hasInnerBeans.getSomeMap().get("someKey");
		assertEquals("Jenny", inner3.getName());
		assertEquals(30, inner3.getAge());
		TestBean inner4 = (TestBean) hasInnerBeans.getSomeMap().get("someOtherKey");
		assertEquals("inner4", inner4.getName());
		assertEquals(9, inner4.getAge());

		xbf.destroySingletons();
		assertTrue(inner1.wasDestroyed());
		assertTrue(inner2.wasDestroyed());
		assertTrue(innerFactory.getName() == null);
		assertTrue(inner5.wasDestroyed());
	}

	public void testSingletonInheritanceFromParentFactorySingleton() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		assertEquals(TestBean.class, child.getType("inheritsFromParentFactory"));
		TestBean inherits = (TestBean) child.getBean("inheritsFromParentFactory");
		// Name property value is overridden
		assertTrue(inherits.getName().equals("override"));
		// Age property is inherited from bean in parent factory
		assertTrue(inherits.getAge() == 1);
		TestBean inherits2 = (TestBean) child.getBean("inheritsFromParentFactory");
		assertTrue(inherits2 == inherits);
	}

	public void testInheritanceWithDifferentClass() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		assertEquals(DerivedTestBean.class, child.getType("inheritsWithClass"));
		DerivedTestBean inherits = (DerivedTestBean) child.getBean("inheritsWithDifferentClass");
		// Name property value is overridden
		assertTrue(inherits.getName().equals("override"));
		// Age property is inherited from bean in parent factory
		assertTrue(inherits.getAge() == 1);
		assertTrue(inherits.wasInitialized());
	}

	public void testInheritanceWithClass() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		assertEquals(DerivedTestBean.class, child.getType("inheritsWithClass"));
		DerivedTestBean inherits = (DerivedTestBean) child.getBean("inheritsWithClass");
		// Name property value is overridden
		assertTrue(inherits.getName().equals("override"));
		// Age property is inherited from bean in parent factory
		assertTrue(inherits.getAge() == 1);
		assertTrue(inherits.wasInitialized());
	}

	public void testPrototypeInheritanceFromParentFactoryPrototype() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		assertEquals(TestBean.class, child.getType("prototypeInheritsFromParentFactoryPrototype"));
		TestBean inherits = (TestBean) child.getBean("prototypeInheritsFromParentFactoryPrototype");
		// Name property value is overridden
		assertTrue(inherits.getName().equals("prototype-override"));
		// Age property is inherited from bean in parent factory
		assertTrue(inherits.getAge() == 2);
		TestBean inherits2 = (TestBean) child.getBean("prototypeInheritsFromParentFactoryPrototype");
		assertFalse(inherits2 == inherits);
		inherits2.setAge(13);
		assertTrue(inherits2.getAge() == 13);
		// Shouldn't have changed first instance
		assertTrue(inherits.getAge() == 2);
	}

	public void testPrototypeInheritanceFromParentFactorySingleton() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		TestBean inherits = (TestBean) child.getBean("protoypeInheritsFromParentFactorySingleton");
		// Name property value is overridden
		assertTrue(inherits.getName().equals("prototypeOverridesInheritedSingleton"));
		// Age property is inherited from bean in parent factory
		assertTrue(inherits.getAge() == 1);
		TestBean inherits2 = (TestBean) child.getBean("protoypeInheritsFromParentFactorySingleton");
		assertFalse(inherits2 == inherits);
		inherits2.setAge(13);
		assertTrue(inherits2.getAge() == 13);
		// Shouldn't have changed first instance
		assertTrue(inherits.getAge() == 1);
	}

	public void testAbstractParentBeans() {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		parent.preInstantiateSingletons();
		assertTrue(parent.isSingleton("inheritedTestBeanWithoutClass"));

		// abstract beans should not match
		Map tbs = parent.getBeansOfType(TestBean.class);
		assertEquals(2, tbs.size());
		assertTrue(tbs.containsKey("inheritedTestBeanPrototype"));
		assertTrue(tbs.containsKey("inheritedTestBeanSingleton"));

		// abstract bean should throw exception on creation attempt
		try {
			parent.getBean("inheritedTestBeanWithoutClass");
			fail("Should have thrown BeanIsAbstractException");
		}
		catch (BeanIsAbstractException ex) {
			// expected
		}

		// non-abstract bean should work, even if it serves as parent
		assertTrue(parent.getBean("inheritedTestBeanPrototype") instanceof TestBean);
	}

	public void testDependenciesMaterializeThis() throws Exception {
		XmlBeanFactory xbf = new XmlBeanFactory(new ClassPathResource("dependenciesMaterializeThis.xml", getClass()));
		DummyBoImpl bos = (DummyBoImpl) xbf.getBean("boSingleton");
		DummyBoImpl bop = (DummyBoImpl) xbf.getBean("boPrototype");
		assertNotSame(bos, bop);
		assertTrue(bos.dao == bop.dao);

		assertEquals(2, xbf.getBeansOfType(DummyBoImpl.class, true, true).size());
		assertEquals(1, xbf.getBeansOfType(DummyBoImpl.class, false, true).size());
		assertEquals(2, xbf.getBeansOfType(DummyBoImpl.class).size());
		assertEquals(3, xbf.getBeansOfType(DummyBo.class, true, true).size());
		assertEquals(2, xbf.getBeansOfType(DummyBo.class, true, false).size());
		assertEquals(3, xbf.getBeansOfType(DummyBo.class).size());
	}

	public void testChildOverridesParentBean() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		TestBean inherits = (TestBean) child.getBean("inheritedTestBean");
		// Name property value is overridden
		assertTrue(inherits.getName().equals("overrideParentBean"));
		// Age property is inherited from bean in parent factory
		assertTrue(inherits.getAge() == 1);
		TestBean inherits2 = (TestBean) child.getBean("inheritedTestBean");
		assertTrue(inherits2 == inherits);
	}

	/**
	 * Check that a prototype can't inherit from a bogus parent.
	 * If a singleton does this the factory will fail to load.
	 */
	public void testBogusParentageFromParentFactory() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		try {
			TestBean inherits = (TestBean) child.getBean("bogusParent");
			fail();
		}
		catch (BeanDefinitionStoreException ex) {
			// OK
			// check exception message contains the name
			assertTrue(ex.getMessage().indexOf("bogusParent") != -1);
			assertTrue(ex.getCause() instanceof NoSuchBeanDefinitionException);
		}
	}

	/**
	 * Note that prototype/singleton distinction is <b>not</b> inherited.
	 * It's possible for a subclass singleton not to return independent
	 * instances even if derived from a prototype
	 */
	public void testSingletonInheritsFromParentFactoryPrototype() throws Exception {
		XmlBeanFactory parent = new XmlBeanFactory(new ClassPathResource("parent.xml", getClass()));
		XmlBeanFactory child = new XmlBeanFactory(new ClassPathResource("child.xml", getClass()), parent);
		TestBean inherits = (TestBean) child.getBean("singletonInheritsFromParentFactoryPrototype");
		// Name property value is overriden
		assertTrue(inherits.getName().equals("prototype-override"));
		// Age property is inherited from bean in parent factory