Spring Framework example source code file (FactoryBeanTests.java)

This example Spring Framework source code file (FactoryBeanTests.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

alpha, alpha, beta, beta, classpathxmlapplicationcontext, classpathxmlapplicationcontext, exception, factorybean, gamma, gamma, initializingbean, object, string, xmlbeanfactory

The Spring Framework FactoryBeanTests.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 junit.framework.TestCase;

import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;
import org.springframework.util.Assert;

/**
 * @author Rob Harrop
 * @author Juergen Hoeller
 */
public class FactoryBeanTests extends TestCase {

	public void testFactoryBeanReturnsNull() throws Exception {
		XmlBeanFactory factory = new XmlBeanFactory(new ClassPathResource("factoryBeanReturnsNull.xml", getClass()));
		Object result = factory.getBean("factoryBean");
		assertNull(result);
	}

	public void testFactoryBeansWithAutowiring() throws Exception {
		ClassPathXmlApplicationContext factory =
				new ClassPathXmlApplicationContext("factoryBeansWithAutowiring.xml", getClass());
		Alpha alpha = (Alpha) factory.getBean("alpha");
		Beta beta = (Beta) factory.getBean("beta");
		Gamma gamma = (Gamma) factory.getBean("gamma");
		Gamma gamma2 = (Gamma) factory.getBean("gammaFactory");
		assertSame(beta, alpha.getBeta());
		assertSame(gamma, beta.getGamma());
		assertSame(gamma2, beta.getGamma());
		assertEquals("yourName", beta.getName());
	}

	public void testFactoryBeansWithIntermediateFactoryBeanAutowiringFailure() throws Exception {
		ClassPathXmlApplicationContext factory =
				new ClassPathXmlApplicationContext("factoryBeansWithAutowiring.xml", getClass());
		Beta beta = (Beta) factory.getBean("beta");
		Alpha alpha = (Alpha) factory.getBean("alpha");
		Gamma gamma = (Gamma) factory.getBean("gamma");
		assertSame(beta, alpha.getBeta());
		assertSame(gamma, beta.getGamma());
	}


	public static class NullReturningFactoryBean implements FactoryBean {

		public Object getObject() {
			return null;
		}

		public Class getObjectType() {
			return null;
		}

		public boolean isSingleton() {
			return true;
		}
	}


	public static class Alpha implements InitializingBean {

		private Beta beta;

		public void setBeta(Beta beta) {
			this.beta = beta;
		}

		public Beta getBeta() {
			return beta;
		}

		public void afterPropertiesSet() {
			Assert.notNull(beta, "'beta' property is required");
		}
	}


	public static class Beta implements InitializingBean {

		private Gamma gamma;

		private String name;

		public void setGamma(Gamma gamma) {
			this.gamma = gamma;
		}

		public Gamma getGamma() {
			return gamma;
		}

		public void setName(String name) {
			this.name = name;
		}

		public String getName() {
			return name;
		}

		public void afterPropertiesSet() {
			Assert.notNull(gamma, "'gamma' property is required");
		}
	}


	public static class Gamma {
	}


	public static class BetaFactoryBean implements FactoryBean {

		private Beta beta;

		public void setBeta(Beta beta) {
			this.beta = beta;
		}

		public Object getObject() {
			return this.beta;
		}

		public Class getObjectType() {
			return null;
		}

		public boolean isSingleton() {
			return true;
		}
	}

}