package com.atguigu.springcloud.dao;

import com.atguigu.springcloud.entities.Payment;

import com.atguigu.springcloud.entities.PaymentExample;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import org.apache.ibatis.annotations.Param;

@Mapper  //使用了@mapper 标记这是一个映射接口

public interface PaymentMapper {

    int countByExample(PaymentExample example);

    int deleteByExample(PaymentExample example);

    int deleteByPrimaryKey(Long id);

    int insert(Payment record);

    int insertSelective(Payment record);

    List<Payment> selectByExample(PaymentExample example);

    Payment selectByPrimaryKey(Long id);

    int updateByExampleSelective(@Param("record") Payment record, @Param("example") PaymentExample example);

    int updateByExample(@Param("record") Payment record, @Param("example") PaymentExample example);

    int updateByPrimaryKeySelective(Payment record);

    int updateByPrimaryKey(Payment record);

}

//UserDAO

import org.apache.ibatis.annotations.Mapper;

import org.apache.ibatis.annotations.Param;

import org.apache.ibatis.annotations.Select;

import entity.User;

/**

 * 添加了@Mapper注解之后这个接口在编译时会生成相应的实现类

 *

 * 需要注意的是：这个接口中不可以定义同名的方法，因为会生成相同的id

 * 也就是说这个接口是不支持重载的

 */

@Mapper

public interface UserDAO {

    @Select("select * from user where name = #{name}")

    public User find(String name);

    @Select("select * from user where name = #{name} and pwd = #{pwd}")

    /**

      * 对于多个参数来说，每个参数之前都要加上@Param注解，

      * 要不然会找不到对应的参数进而报错

      */

    public User login(@Param("name")String name, @Param("pwd")String pwd);

}