package com.lili.office.utils;

import java.util.List;

import javax.annotation.PostConstruct;

import com.google.common.collect.Lists;
import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * @author JamieChyi
 */
@Component
public class MyBatisBatchExecutorUtil {
    private static final Logger logger = LoggerFactory.getLogger(MyBatisBatchExecutorUtil.class);

    @Autowired
    private SqlSessionFactory sqlSessionFactory;
    private static MyBatisBatchExecutorUtil utils;

    @PostConstruct
    public void init() {
        utils = this;
        utils.sqlSessionFactory = this.sqlSessionFactory;
    }

    /**
     * 批量提交數(shù)據(jù)
     *
     * @param mapperClass     Mapper 類
     * @param mybatisSqlId    SQL 語句在 Mapper XML 文件中的 ID
     * @param dataList        要提交的數(shù)據(jù)列表
     */
    public static <T> void batchCommit(Class<?> mapperClass, String mybatisSqlId, List<T> dataList) {
        if (dataList == null || dataList.isEmpty()) {
            return;
        }

        SqlSession session = null;
        int commitCountEveryTime = 500;
        try {
            long startTime = System.currentTimeMillis();
            session = utils.sqlSessionFactory.openSession(ExecutorType.BATCH, false);
            List<List<T>> groupList = Lists.partition(dataList, commitCountEveryTime);
            for (List<T> tempList : groupList) {
                session.insert(mapperClass.getName() + "." + mybatisSqlId, tempList);
                session.commit();
                session.clearCache();
            }
            long endTime = System.currentTimeMillis();
            logger.info("批量插入數(shù)據(jù)耗時(shí)：" + (endTime - startTime) + "毫秒");
        } catch (Exception e) {
            logger.error("batchCommit error!", e);
            if (session != null) {
                session.rollback();
            }
        } finally {
            if (session != null) {
                session.close();
            }
        }
    }

    public static <T> void batchCommit(Class<?> mapperClass, List<T> dataList) {
        batchCommit(mapperClass, "insertPOBatch", dataList);
    }
}

public static <T> void batchCommit(Class<?> mapperClass, String mybatisSqlId, List<T> dataList) {
    // 處理邏輯
}

public static <T> void batchCommit(Class<?> mapperClass, List<T> dataList) {
    batchCommit(mapperClass, "insertPOBatch", dataList);
}

long startTime = System.currentTimeMillis();
// 執(zhí)行批量操作
long endTime = System.currentTimeMillis();
logger.info("批量插入數(shù)據(jù)耗時(shí)：" + (endTime - startTime) + "毫秒");

catch (Exception e) {
    logger.error("batchCommit error!", e);
    if (session != null) {
        session.rollback();
    }
}