org.jdal.aop.SerializableProxyAdvisor.java Source code

Introduction

Here is the source code for org.jdal.aop.SerializableProxyAdvisor.java

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/*
 * Copyright 2009-2014 Jose Luis Martin.
 *
 * 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.jdal.aop;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jdal.annotation.SerializableProxy;
import org.springframework.aop.framework.autoproxy.ProxyCreationContext;
import org.springframework.aop.support.DefaultIntroductionAdvisor;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.core.annotation.AnnotationUtils;

/**
 * Advisor for SerializableProxy annotation on types.
 * 
 * @author Jose Luis Martin.
 * @since 2.0
 */
public class SerializableProxyAdvisor extends DefaultIntroductionAdvisor implements BeanFactoryAware {

    private static final Log log = LogFactory.getLog(SerializableProxyAdvisor.class);
    private ConfigurableListableBeanFactory beanFactory;

    public SerializableProxyAdvisor() {
        super(new SerializableIntroductionInterceptor());
    }

    /**
     * Checks for {@link SerializableProxy} anntation at type level.
     * @return true if annotation found.
     */
    @Override
    public boolean matches(Class<?> clazz) {
        SerializableProxy ann = AnnotationUtils.findAnnotation(clazz, SerializableProxy.class);

        if (ann != null && !SerializableAopProxy.class.isAssignableFrom(clazz)) {
            String beanName = ProxyCreationContext.getCurrentProxiedBeanName();
            if (beanName != null && !beanName.startsWith(SerializableProxyUtils.TARGET_NAME_PREFIX)) {
                configureReference(ann, beanName);
                return true;
            }
        }

        return false;
    }

    /**
     * Configure the serializable reference with annotation parameters and target bean name.
     * @param ann annotation.
     */
    private void configureReference(SerializableProxy ann, String beanName) {
        if (log.isDebugEnabled())
            log.debug("Configuring serializable reference for bean [" + beanName + "]");

        SerializableIntroductionInterceptor advice = (SerializableIntroductionInterceptor) getAdvice();
        SerializableReference reference = advice.getReference();
        reference.setTargetBeanName(beanName);
        reference.setBeanFactory(beanFactory);
        reference.setProxyTargetClass(ann.proxyTargetClass());
        reference.setUseMemoryCache(ann.useCache());
    }

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.beanFactory = (ConfigurableListableBeanFactory) beanFactory;

    }

}