Spring Framework example source code file (AutoProxyUtils.java)

This example Spring Framework source code file (AutoProxyUtils.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

autoproxyutils, autoproxyutils, beandefinition, beandefinition, preserve_target_class_attribute, preserve_target_class_attribute, string, string

The Spring Framework AutoProxyUtils.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 org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.core.Conventions;

/**
 * Utilities for auto-proxy aware components.
 * Mainly for internal use within the framework.
 *
 * @author Juergen Hoeller
 * @since 2.0.3
 * @see AbstractAutoProxyCreator
 */
public abstract class AutoProxyUtils {

	/**
	 * Bean definition attribute that may indicate whether a given bean is supposed
	 * to be proxied with its target class (in case of it getting proxied in the first
	 * place). The value is <code>Boolean.TRUE or Boolean.FALSE.
	 * <p>Proxy factories can set this attribute if they built a target class proxy
	 * for a specific bean, and want to enforce that that bean can always be cast
	 * to its target class (even if AOP advices get applied through auto-proxying).
	 */
	public static final String PRESERVE_TARGET_CLASS_ATTRIBUTE =
			Conventions.getQualifiedAttributeName(AutoProxyUtils.class, "preserveTargetClass");


	/**
	 * Determine whether the given bean should be proxied with its target
	 * class rather than its interfaces. Checks the
	 * {@link #PRESERVE_TARGET_CLASS_ATTRIBUTE "preserveTargetClass" attribute}
	 * of the corresponding bean definition.
	 * @param beanFactory the containing ConfigurableListableBeanFactory
	 * @param beanName the name of the bean
	 * @return whether the given bean should be proxied with its target class
	 */
	public static boolean shouldProxyTargetClass(ConfigurableListableBeanFactory beanFactory, String beanName) {
		if (beanFactory.containsBeanDefinition(beanName)) {
			BeanDefinition bd = beanFactory.getBeanDefinition(beanName);
			return Boolean.TRUE.equals(bd.getAttribute(PRESERVE_TARGET_CLASS_ATTRIBUTE));
		}
		return false;
	}

}