/**
 * Copyright (c) 2018 人人开源 All rights reserved.
 *
 * https://www.renren.io
 *
 * 版权所有，侵权必究！
 */

package com.example.server.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import java.util.Map;

/**
 * Spring Context 工具类
 *
 * @author Mark sunlightcs@gmail.com
 */
@Component
public class SpringContextUtils implements ApplicationContextAware {
    public static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextUtils.applicationContext = applicationContext;
    }

    public static Object getBean(String name) {
        return applicationContext.getBean(name);
    }

    public static <T> T getBean(Class<T> requiredType) {
        return applicationContext.getBean(requiredType);
    }

    public static <T> T getBean(String name, Class<T> requiredType) {
        return applicationContext.getBean(name, requiredType);
    }

    public static boolean containsBean(String name) {
        return applicationContext.containsBean(name);
    }

    public static boolean isSingleton(String name) {
        return applicationContext.isSingleton(name);
    }

    public static Class<? extends Object> getType(String name) {
        return applicationContext.getType(name);
    }

    /**
     * 获取接口的实现类实例。
     *
     * @param clazz
     * @return
     */
    public static <T> Map<String, T> getImplInstance(Class<T> clazz) {
        return applicationContext.getBeansOfType(clazz);
    }

}