带有QuerydslBinderCustomizer的多个别名

Question

我在RestController中对一个实体使用QuerydslPredicate，它有一个date对象，我希望能够查询给定日期之前/之后/之间的日期，希望有类似的东西

null

@Repository
public interface ProblemRepository extends JpaRepository<Problem, String>, QueryDslPredicateExecutor<Problem>,
        QuerydslBinderCustomizer<QProblem> {

            ....

    @Override
    default void customize(QuerydslBindings bindings, QProblem root) {
        bindings.bind(root.createdOn).as("createdOnAfter").first(TemporalExpression::after);
        bindings.bind(root.createdOn).as("createdOnBefore").first(TemporalExpression::before);
    }
}

Answer 1

为什么不使用QueryDSL谓词？你可以做：

@GetMapping("/problems")
@Timed
public ResponseEntity<List<ProblemDTO>> getAllProblems(
      @RequestParam(required = false) LocalDateTime createdOnAfter, 
      @RequestParam(required = false) LocalDateTime createdOnBefore,
      @ApiParam Pageable pageable) {
    BooleanBuilder where = new BooleanBuilder();
    if (startDate != null) {
        where = where.and(problem.createdOn.after(createdOnAfter));
    }
    if (endDate != null) {
        where = where.and(problem.createdOn.before(createdOnBefore));
    }
    Page<Donnee> page = problemRepository.findAll(where, pageable);
    return new ResponseEntity<>(problemMapper.toDTO(page.getContent())), null, HttpStatus.OK);
}

希望有帮助，问候