Spring Data REST custom query integration

Question

I want to create a REST link for an Employee entity that will basically be a findByAllFields query. Of course this should be combined with Pa

Answer 1

Spring HATEOAS has changed the name of Resource, PagedResources and some other classes. See here. Below is a working version in 2020.

@RepositoryRestController
public class EmployeeSearchController {
    @Autowired
    private EmployeeRepository employeRepository;

    @Autowired
    private PagedResourcesAssembler<Employee> pagedAssembler;

    @RequestMapping(value = "/employees/search/all", method = RequestMethod.GET)
    public ResponseEntity<PagedModel<EntityModel<Employee>>> getEmployees(PersistentEntityResourceAssembler entityAssembler,,
                                                                          EmployeeCriteria filterCriteria,
                                                                          Pageable pageable) {

        Specification<Employee> specification = new EmployeeSpecification(filterCriteria);

        Page<Employee> employees = employeeRepository.findAll(specification, pageable);
        return ResponseEntity.ok(pagedAssembler.toModel(plants, (RepresentationModelAssembler) entityAssembler));
    }
}

Answer 2

The code by @Stackee007 works but the resource won't include self links. In order to do that, a little more is required.

@Autowired
PagedResourcesAssembler<Appointment> pagedResourcesAssembler;

@RequestMapping(value = "/findTodaysSchedule")
public HttpEntity<PagedResources<Resource<Appointment>>> getTodaysSchedule(
        PersistentEntityResourceAssembler entityAssembler, Pageable pageable) {
    Page<Appointment> todaysSchedule = apptRepo.findByStartTimeBetween(beginningOfDay, endOfDay, pageable);

    @SuppressWarnings({ "unchecked", "rawtypes" })
    PagedResources<Resource<Appointment>> resource = pagedResourcesAssembler.toResource(todaysSchedule,
                (ResourceAssembler) entityAssembler);

    return new ResponseEntity<>(resource, HttpStatus.OK);
}

Answer 3

Try autowring PagedResourcesAssembler as a class member and change method signature something like below

@RepositoryRestController
public class EmployeeSearchController {

    @Autowired
    private EmployeeRepository employeRepository;

    @Autowired
    private PagedResourcesAssembler<Employee> pagedAssembler;

    @RequestMapping(value = "/employees/search/all/search/all", method = RequestMethod.GET)
    public ResponseEntity<Resources<Resource<Employee>>> getEmployees(EmployeeCriteria filterCriteria, Pageable pageable) {

        //EmployeeSpecification uses CriteriaAPI to form dynamic query with the fields from filterCriteria
        Specification<Employee> specification = new EmployeeSpecification(filterCriteria);

        Page<Employee> employees = employeeRepository.findAll(specification, pageable);
        return assembler.toResource(employees);
    }
}

This works perfectly with Spring Data Rest 2.1.4.RELEASE