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@Component public interface TaskDao extends PagingAndSortingRepository<Task, Long>, JpaSpecificationExecutor<Task> { Page<Task> findByUserId(Long id, Pageable pageRequest); @Modifying @Query("delete from Task task where task.user.id=?1") void deleteByUserId(Long id); }
public Page<Task> getUserTask(Long userId, Map<String, Object> searchParams, int pageNumber, int pageSize, String sortType) { PageRequest pageRequest = buildPageRequest(pageNumber, pageSize, sortType); Specification<Task> spec = buildSpecification(userId, searchParams); return taskDao.findAll(spec, pageRequest); } /** * 创建分页请求. */ private PageRequest buildPageRequest(int pageNumber, int pagzSize, String sortType) { Sort sort = null; if ("auto".equals(sortType)) { sort = new Sort(Direction.DESC, "id"); } else if ("title".equals(sortType)) { sort = new Sort(Direction.ASC, "title"); } return new PageRequest(pageNumber - 1, pagzSize, sort); } /** * 创建动态查询条件组合. */ private Specification<Task> buildSpecification(Long userId, Map<String, Object> searchParams) { Map<String, SearchFilter> filters = SearchFilter.parse(searchParams); filters.put("user.id", new SearchFilter("user.id", Operator.EQ, userId)); Specification<Task> spec = DynamicSpecifications.bySearchFilter(filters.values(), Task.class); return spec; }
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原文地址:http://www.cnblogs.com/quanfu2326/p/4290721.html