ziin
994d71a10c
- 将UserController中置顶/取消置顶逻辑下沉到PkPinService，统一事务与异常处理 - UserDao新增原子增减积分方法，避免并发扣减问题 - VVTools抽取SECONDS_PER_HOUR常量并修复向上取整计算 - 新增EpochSecondProvider等接口与实现，为后续测试提供时钟桩 - 补充PkPinServiceImplTests单元测试，覆盖置顶成功、积分不足、重复取消等场景
33 lines
1.2 KiB
Java
33 lines
1.2 KiB
Java
package vvpkassistant.User.mapper;
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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import com.baomidou.mybatisplus.core.toolkit.Wrappers;
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import org.apache.ibatis.annotations.Mapper;
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import vvpkassistant.User.model.UserModel;
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@Mapper
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public interface UserDao extends BaseMapper<UserModel> {
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// 原子扣减积分：当 points >= cost 时扣减，返回受影响行数(1=成功，0=积分不足/用户不存在)
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default int decreasePointsIfEnough(Integer userId, int cost) {
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return update(null, Wrappers.<UserModel>lambdaUpdate()
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.eq(UserModel::getId, userId)
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.ge(UserModel::getPoints, cost)
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.setSql("points = points - " + cost));
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}
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// 原子增加积分：返回受影响行数(1=成功，0=用户不存在)
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default int increasePoints(Integer userId, int amount) {
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return update(null, Wrappers.<UserModel>lambdaUpdate()
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.eq(UserModel::getId, userId)
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.setSql("points = points + " + amount));
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}
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// 根据用户的手机号查询用户
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default UserModel queryWithPhoneNumber(String phoneNumber) {
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return selectOne(Wrappers.<UserModel>lambdaQuery()
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.eq(UserModel::getMobile, phoneNumber));
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}
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}
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