com.techtrip.spring.beans.factory.ContextAwareBeanFactory.java Source code

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Here is the source code for com.techtrip.spring.beans.factory.ContextAwareBeanFactory.java

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/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* 
* This program 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 General Public License for more details.
* 
* See <http://www.gnu.org/licenses/>.
*/
package com.techtrip.spring.beans.factory;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * A factory for creating ContextAwareBean objects.
 */
@Component
public class ContextAwareBeanFactory implements ApplicationContextAware, BeanFactoryPostProcessor {

    /** The app context. */
    private ApplicationContext appContext;

    /** The factory. */
    private ConfigurableListableBeanFactory factory;

    /** The registry. */
    private BeanDefinitionRegistry registry;

    /* (non-Javadoc)
     * @see org.springframework.beans.factory.config.BeanFactoryPostProcessor#postProcessBeanFactory(org.springframework.beans.factory.config.ConfigurableListableBeanFactory)
     */
    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        this.factory = beanFactory;

        registry = ((BeanDefinitionRegistry) factory);
    }

    /* (non-Javadoc)
     * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
     */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.appContext = applicationContext;
    }

    /**
     * Gets the app context.
     *
     * @return the app context
     */
    public ApplicationContext getAppContext() {
        return appContext;
    }

    /**
     * Gets the factory.
     *
     * @return the factory
     */
    public ConfigurableListableBeanFactory getFactory() {
        return factory;
    }

    /**
     * Register bean.
     *
     * @param beanToRegister the bean to register
     * @param beanName the bean name
     * @param scope the scope
     * @param setLazyInit the set lazy init
     * @param setAutowireCandidate the set autowire candidate
     */
    public void registerBean(Class<?> beanToRegister, String beanName, String scope /* "session" */,
            boolean setLazyInit, boolean setAutowireCandidate) {
        GenericBeanDefinition beanDefinition = new GenericBeanDefinition();
        beanDefinition.setBeanClass(beanToRegister);
        beanDefinition.setLazyInit(setLazyInit);
        beanDefinition.setAbstract(false);
        beanDefinition.setAutowireCandidate(setAutowireCandidate);
        beanDefinition.setScope(scope);

        registry.registerBeanDefinition(beanName, beanDefinition);
    }

    /**
     * Gets the bean.
     *
     * @param beanName the bean name
     * @return the bean
     */
    public Object getBean(String beanName) {
        Object bean = this.appContext.getBean(beanName);

        return bean;
    }
}