Spring Framework example source code file (SimpleBeanFactoryAwareAspectInstanceFactory.java)

This example Spring Framework source code file (SimpleBeanFactoryAwareAspectInstanceFactory.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

aspectinstancefactory, aspectinstancefactory, beanfactory, beanfactoryaware, classloader, configurablebeanfactory, configurablebeanfactory, illegalargumentexception, object, object, ordered, ordered, simplebeanfactoryawareaspectinstancefactory, string

The Spring Framework SimpleBeanFactoryAwareAspectInstanceFactory.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.config;

import org.springframework.aop.aspectj.AspectInstanceFactory;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.core.Ordered;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;

/**
 * Implementation of {@link AspectInstanceFactory} that locates the aspect from the
 * {@link org.springframework.beans.factory.BeanFactory} using a configured bean name.
 *
 * @author Rob Harrop
 * @author Juergen Hoeller
 * @since 2.0
 */
public class SimpleBeanFactoryAwareAspectInstanceFactory implements AspectInstanceFactory, BeanFactoryAware {

	private String aspectBeanName;

	private BeanFactory beanFactory;


	/**
	 * Set the name of the aspect bean. This is the bean that is returned when calling
	 * {@link #getAspectInstance()}.
	 */
	public void setAspectBeanName(String aspectBeanName) {
		this.aspectBeanName = aspectBeanName;
	}

	public void setBeanFactory(BeanFactory beanFactory) {
		this.beanFactory = beanFactory;
		if (!StringUtils.hasText(this.aspectBeanName)) {
			throw new IllegalArgumentException("'aspectBeanName' is required");
		}
	}


	/**
	 * Look up the aspect bean from the {@link BeanFactory} and returns it.
	 * @see #setAspectBeanName
	 */
	public Object getAspectInstance() {
		return this.beanFactory.getBean(this.aspectBeanName);
	}

	public ClassLoader getAspectClassLoader() {
		if (this.beanFactory instanceof ConfigurableBeanFactory) {
			return ((ConfigurableBeanFactory) this.beanFactory).getBeanClassLoader();
		}
		else {
			return ClassUtils.getDefaultClassLoader();
		}
	}

	public int getOrder() {
		if (this.beanFactory.isSingleton(this.aspectBeanName) &&
				this.beanFactory.isTypeMatch(this.aspectBeanName, Ordered.class)) {
			return ((Ordered) this.beanFactory.getBean(this.aspectBeanName)).getOrder();
		}
		return Ordered.LOWEST_PRECEDENCE;
	}

}