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【功能优化】全局：增加 selectFirstOne 方法，解决容易出现并发场景下的查询

This commit is contained in:
YunaiV 2025-03-16 16:31:36 +08:00
parent 36165e72fc
commit 2dc8071faa
3 changed files with 35 additions and 13 deletions
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30
yudao-framework/yudao-spring-boot-starter-mybatis/src/main/java/cn/iocoder/yudao/framework/mybatis/core/mapper/BaseMapperX.java
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@ -92,10 +92,36 @@ public interface BaseMapperX<T> extends MPJBaseMapper<T> {
default T selectOne(SFunction<T, ?> field1, Object value1, SFunction<T, ?> field2, Object value2,
SFunction<T, ?> field3, Object value3) {
return selectOne(new LambdaQueryWrapper<T>().eq(field1, value1).eq(field2, value2)
.eq(field3, value3));
return selectOne(new LambdaQueryWrapper<T>().eq(field1, value1).eq(field2, value2).eq(field3, value3));
}
/**
* 获取满足条件的第 1 条记录
*
* 目的：解决并发场景下，插入多条记录后，使用 selectOne 会报错的问题
*
* @param field 字段名
* @param value 字段值
* @return 实体
*/
default T selectFirstOne(SFunction<T, ?> field, Object value) {
// 如果明确使用 MySQL 等场景，可以考虑使用 LIMIT 1 进行优化
List<T> list = selectList(new LambdaQueryWrapper<T>().eq(field, value));
return CollUtil.getFirst(list);
}
default T selectFirstOne(SFunction<T, ?> field1, Object value1, SFunction<T, ?> field2, Object value2) {
List<T> list = selectList(new LambdaQueryWrapper<T>().eq(field1, value1).eq(field2, value2));
return CollUtil.getFirst(list);
}
default T selectFirstOne(SFunction<T,?> field1, Object value1, SFunction<T,?> field2, Object value2,
SFunction<T,?> field3, Object value3) {
List<T> list = selectList(new LambdaQueryWrapper<T>().eq(field1, value1).eq(field2, value2).eq(field3, value3));
return CollUtil.getFirst(list);
}
default Long selectCount() {
return selectCount(new QueryWrapper<>());
}

5
yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/dal/mysql/history/ProductBrowseHistoryMapper.java
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@ -21,9 +21,8 @@ import java.util.Collection;
public interface ProductBrowseHistoryMapper extends BaseMapperX<ProductBrowseHistoryDO> {
default ProductBrowseHistoryDO selectByUserIdAndSpuId(Long userId, Long spuId) {
return selectOne(new LambdaQueryWrapperX<ProductBrowseHistoryDO>()
.eq(ProductBrowseHistoryDO::getUserId, userId)
.eq(ProductBrowseHistoryDO::getSpuId, spuId));
return selectFirstOne(ProductBrowseHistoryDO::getUserId, userId,
ProductBrowseHistoryDO::getSpuId, spuId);
}
default PageResult<ProductBrowseHistoryDO> selectPage(ProductBrowseHistoryPageReqVO reqVO) {

13
yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/social/SocialUserMapper.java
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@ -5,23 +5,20 @@ import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
import cn.iocoder.yudao.framework.mybatis.core.query.LambdaQueryWrapperX;
import cn.iocoder.yudao.module.system.controller.admin.socail.vo.user.SocialUserPageReqVO;
import cn.iocoder.yudao.module.system.dal.dataobject.social.SocialUserDO;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface SocialUserMapper extends BaseMapperX<SocialUserDO> {
default SocialUserDO selectByTypeAndCodeAnState(Integer type, String code, String state) {
return selectOne(new LambdaQueryWrapper<SocialUserDO>()
.eq(SocialUserDO::getType, type)
.eq(SocialUserDO::getCode, code)
.eq(SocialUserDO::getState, state));
return selectOne(SocialUserDO::getType, type,
SocialUserDO::getCode, code,
SocialUserDO::getState, state);
}
default SocialUserDO selectByTypeAndOpenid(Integer type, String openid) {
return selectOne(new LambdaQueryWrapper<SocialUserDO>()
.eq(SocialUserDO::getType, type)
.eq(SocialUserDO::getOpenid, openid));
return selectFirstOne(SocialUserDO::getType, type,
SocialUserDO::getOpenid, openid);
}
default PageResult<SocialUserDO> selectPage(SocialUserPageReqVO reqVO) {