com.shigengyu.common.springextension.SpringBeanSet.java Source code

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/*******************************************************************************
 * Copyright 2013-2014 Gengyu Shi
 *
 * 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 com.shigengyu.common.springextension;

import java.util.List;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;

import com.google.common.collect.Lists;

public abstract class SpringBeanSet<T> implements BeanPostProcessor {

    private final List<T> beans;

    private final Class<? extends T> clazz;

    protected SpringBeanSet(Class<? extends T> clazz) {
        this.clazz = clazz;
        beans = Lists.newArrayList();
    }

    public List<T> getBeans() {
        return beans;
    }

    @Override
    public final Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        return bean;
    }

    @Override
    public final Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        if (clazz.isAssignableFrom(bean.getClass())) {
            beans.add(clazz.cast(bean));
        }
        return bean;
    }
}