spring-boot-realworld-example-app/src/main/java/io/spring/infrastructure/mybatis/mapper/UserMapper.java

package io.spring.infrastructure.mybatis.mapper;

import io.spring.core.user.FollowRelation;
import io.spring.core.user.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Component;

@Component
@Mapper
public interface UserMapper {
    void insert(@Param("user") User user);

    User findByUsername(@Param("username") String username);
    User findByEmail(@Param("email") String email);

    User findById(@Param("id") String id);

    void update(@Param("user") User user);

    FollowRelation findRelation(@Param("userId") String userId, @Param("targetId") String targetId);

    void saveRelation(@Param("followRelation") FollowRelation followRelation);

    void deleteRelation(@Param("followRelation") FollowRelation followRelation);
}