package com.qidi.platform.base.service;

import java.util.List;

import org.apache.ibatis.mapping.ResultMap;
import org.apache.ibatis.mapping.ResultMapping;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;

public abstract class BaseService {

	Logger logger = Logger.getLogger(BaseService.class);
	
	@Autowired
	SqlSessionFactory sessionFactory; // myBatis核心工厂

	/**
	 * 方法名: propertyToColumn 功能描述: property转Column
	 *
	 * @author yangtao
	 * @since 2016年10月10日 下午5:44:48
	 *
	 * @param
	 * @return String
	 */
	public String propertyToColumn(String resultMapId, String property){
		ResultMap resultMap = sessionFactory.getConfiguration().getResultMap(resultMapId);
		if (null == resultMap) {
			logger.error("resultMap 对象为空");
			return null;
		}

		List<ResultMapping> resultMappings = resultMap.getResultMappings();

		if (null == resultMappings) {
			logger.error("resultMappings 对象为空");
			return null;
		}
		
		Object[] resultMapping = resultMappings.stream().filter(map -> property.equals(map.getProperty())).map(ResultMapping::getColumn).toArray();
		
		if (resultMapping.length < 1){
			return null;
		}else {
			return resultMapping[0].toString();
		}
	}
}