java 春天jpa dao样本

Posted 2021-05-07

public interface CompositeGroupMappingRepository extends JpaRepository<CompositeGroupMapping, Serializable>, JpaSpecificationExecutor<CompositeGroupMapping> {
    /**
     * 根据groupId删除对应的mapping实体
     */
    @Modifying
    @Query("delete from CompositeGroupMapping ur where ur.compositeId=?1")
    void deleteByCompositeId(Long compositeId);
    
        /**
     * 查询所有聚合DTO
     *
     * @return
     */
    @Query("select new com.*.*.dto.CompositeGroupMappingCacheDTO(cgm.id,cgm.groupId,cgm.compositeId) from CompositeGroupMapping cgm")
    List<CompositeGroupMappingCacheDTO> findAllDTO();
    
}