package com.cityos.civilization.city.config;

import com.baomidou.mybatisplus.extension.handlers.JacksonTypeHandler;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.type.TypeHandlerRegistry;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Map;

/**
 * 对于List和Map类型，使用JacksonTypeHandler来处理，主要用来解决json类型的字段
 */
@Component
public class CustomTypeHandlerParser implements ApplicationContextAware {
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        //从spring容器获取sqlSessionFactory
        SqlSessionFactory sqlSessionFactory = applicationContext.getBean(SqlSessionFactory.class);
        //获取typeHandler注册器
        TypeHandlerRegistry typeHandlerRegistry = sqlSessionFactory.getConfiguration().getTypeHandlerRegistry();
        //注册List的typeHandler
        typeHandlerRegistry.register(List.class, JacksonTypeHandler.class);
        typeHandlerRegistry.register(Map.class, JacksonTypeHandler.class);
    }
}