com.liferay.arkadiko.bean.AKBeanDefinition.java Source code

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Here is the source code for com.liferay.arkadiko.bean.AKBeanDefinition.java

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/**
 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.arkadiko.bean;

import com.liferay.arkadiko.internal.Constants;
import com.liferay.arkadiko.sr.ServiceRegistry;

import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.GenericBeanDefinition;

/**
 * @author Raymond Aug
 */
public class AKBeanDefinition extends GenericBeanDefinition {

    /**
     * Instantiates a new Arkadiko bean definition.
     *
     * @param beanPostProcessor the bean post processor
     * @param abstractBeanDefinition the bean definition
     * @param beanName the bean name
     * @param interfaces the interfaces
     * @param serviceRegistry the service registry
     */
    public AKBeanDefinition(AKBeanPostProcessor beanPostProcessor, AbstractBeanDefinition abstractBeanDefinition,
            String beanName, ServiceRegistry serviceRegistry) {

        super(abstractBeanDefinition);

        _beanPostProcessor = beanPostProcessor;
        _abstractBeanDefinition = abstractBeanDefinition;
        _beanName = beanName;
        _serviceRegistry = serviceRegistry;
        _originalClassName = abstractBeanDefinition.getBeanClassName();
    }

    /**
     * Clone bean definition.
     *
     * @return the aK bean definition
     */
    @Override
    public AKBeanDefinition cloneBeanDefinition() {
        return new AKBeanDefinition(_beanPostProcessor, _abstractBeanDefinition.cloneBeanDefinition(), _beanName,
                _serviceRegistry);
    }

    /**
     * Gets the proxy.
     *
     * @return the proxy
     */
    public Object getProxy() {
        String className = _originalClassName;

        if (className == null) {
            return null;
        }

        if (_proxyMap.get() == null) {
            _proxyMap.set(new HashMap<String, Object>());
        }

        String mapKey = _beanName.concat(Constants.POUND).concat(className);

        if ((_proxy == null) && _proxyMap.get().containsKey(mapKey)) {
            _proxy = _proxyMap.get().get(mapKey);
        }

        if (_proxy != null) {
            setBeanClass(_proxy.getClass());

            return _proxy;
        }

        try {
            Class<?>[] interfaces = getInterfaces(className);

            _proxy = _serviceRegistry.createTrackingProxy(null, _beanName, interfaces);

            setBeanClass(_proxy.getClass());

            _proxyMap.get().put(mapKey, _proxy);
        } catch (Exception e) {
            if (_log.isLoggable(Level.SEVERE)) {
                _log.log(Level.SEVERE, e.getMessage(), e);
            }
        }

        return _proxy;
    }

    /**
     * Resolve bean class.
     *
     * @param classLoader the class loader
     * @return the class
     * @throws ClassNotFoundException the class not found exception
     */
    @Override
    public Class resolveBeanClass(ClassLoader classLoader) throws ClassNotFoundException {

        Object proxy = getProxy();

        if (proxy == null) {
            throw new ClassNotFoundException(getBeanClassName());
        }

        return proxy.getClass();
    }

    protected Class<?>[] getInterfaces(String className) throws ClassNotFoundException {

        Class<?> interfaceClass = Class.forName(className);

        if (!interfaceClass.isInterface()) {
            throw new IllegalArgumentException(className + " is not an interface");
        }

        return new Class<?>[] { interfaceClass };
    }

    private static Logger _log = Logger.getLogger(AKBeanDefinition.class.getName());

    private AbstractBeanDefinition _abstractBeanDefinition;
    private String _beanName;
    private AKBeanPostProcessor _beanPostProcessor;
    private String _originalClassName;
    private Object _proxy;
    private ServiceRegistry _serviceRegistry;

    private static ThreadLocal<Map<String, Object>> _proxyMap = new ThreadLocal<Map<String, Object>>();

}