package com.newyetai.mybatis.config;

import java.util.List;

import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.type.TypeHandlerRegistry;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;

import com.github.pagehelper.autoconfigure.PageHelperAutoConfiguration;
import com.newyetai.mybatis.handle.BaseEnumTypeHandler;
import com.newyetai.mybatis.interceptor.MyPageInterceptor;

import lombok.extern.slf4j.Slf4j;

/**
 * @author guhong
 * @date 2019/8/19
 * 设置mapper扫描的包
 */
@Configuration
@Slf4j
public class MybatisConfig {

  @Autowired
  private List<SqlSessionFactory> sqlSessionFactoryList;

  /**
   * 添加自定义的分页插件，pageHelper 的分页插件PageInterceptor是用@PostConstruct添加的，自定义的应该在其后面添加
   * 真正执行时顺序是反过来，先执行MyPageInterceptor，再执行 PageInterceptor
   *
   * 所以要保证 PageHelperAutoConfiguration 先执行
   */
  @Autowired
  public void addPageInterceptor(PageHelperAutoConfiguration pageHelperAutoConfiguration) {
    MyPageInterceptor interceptor = new MyPageInterceptor();
    for (SqlSessionFactory sqlSessionFactory : sqlSessionFactoryList) {
      sqlSessionFactory.getConfiguration().addInterceptor(interceptor);
      log.info("注册自定义分页插件成功");
      // 取得类型转换注册器
      TypeHandlerRegistry typeHandlerRegistry = sqlSessionFactory.getConfiguration().getTypeHandlerRegistry();
      // 注册默认枚举转换器
      typeHandlerRegistry.setDefaultEnumTypeHandler(BaseEnumTypeHandler.class);
    }
  }

}