Java Representation类代码示例

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@GET
public Response getProducts() {
  final List<Representation> representations = dao.getAll()
      .map(p -> factory.newRepresentation()
          .withLink("self", "/products/" + p.getId(), null, p.getName(), null, null)
          .withBean(p))
      .collect(Collectors.toList());

  final Representation envelope = factory.newRepresentation("/products")
      .withProperty("page", 1)
      .withProperty("perPage", 10)
      .withProperty("totalCount", representations.size());

  representations.forEach(r -> envelope.withRepresentation("items", r));

  return Response.ok(envelope).build();
}
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
private void buildLink(Representation rep, Object targetObj, CanonicalObjectReader reader, ReferenceLink refLink) {

        CanonicalDataType cdt = refLink.getCDMProperty().getTargetDataType();
        ObjectResourceDefinition ord = ObjectResourceDefinitionRegistry.INSTANCE.getResourceDefinition(cdt);
        ObjectResource targetResource = ord.getResource(targetObj, reader);
        if (refLink.isDecorated()) {
            // Render decorated link in HAL as an embedded object.
            Representation refLinkRep = representationFactory.newRepresentation(targetResource.getURI());
            // add included properties
            for (RDMProperty prop : refLink.getIncludedProperties()) {
                refLinkRep.withProperty(prop.getName(), reader.getPropertyValue(targetObj, prop));
            }
            // embed the resource representation
            rep.withRepresentation(refLink.getName(), refLinkRep);
        } else {
            // Render naked link
            rep.withLink(refLink.getName(), targetResource.getURI());
        }
    }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Path(APPOINTMENT_PATH)
   @GET
   @Produces(HAL_JSON)
   public Response getAppointment(@PathParam("id") int id,
    @QueryParam("patientId") String patientId) {
Optional<Appointment> appointment = service.findAppointmentById(id,
	patientId);

if (appointment.isPresent()) {
    LOGGER.info("Found appointment with id: {}.", id);

    Appointment appt = appointment.get();

    Representation rep = repFactory.newAppointmentRepresentation(appt);

    return ok().entity(repFactory.convertToString(rep)).build();
}

LOGGER.error("No appointment found with id: {}.", id);

return noContent().status(NOT_FOUND).build();
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@GET
   @Produces(HAL_JSON)
   // @DateValidated
   public Response getSlots(@QueryParam("date") String date) {
Optional<List<Slot>> slots = service.findSlotsByDate(date);

if (slots.isPresent()) {
    List<Slot> l = slots.get();

    LOGGER.info("Found {} slots for the day: {}.", l.size(), date);

    Representation rep = repFactory.newSlotsRepresentation(l);

    return ok().entity(repFactory.convertToString(rep)).build();
}

LOGGER.info("Didn't find any slots for the day: {}.", date);

return noContent().status(NOT_FOUND).build();
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Path(AvailabilityRepresentationFactory.SLOT_PATH)
   @GET
   @Produces(HAL_JSON)
   public Response getSlot(@PathParam("id") int id) {
Optional<Slot> slot = service.findSlotById(id);

if (slot.isPresent()) {
    LOGGER.info("Found slot with id: {}.", id);

    Optional<Slot> previousSlot = service.findSlotById(id - 1);
    Optional<Slot> nextSlot = service.findSlotById(id + 1);

    Representation rep = repFactory.newSlotRepresentation(slot.get(),
	    previousSlot, nextSlot);

    return ok().entity(repFactory.convertToString(rep)).build();
}

LOGGER.info("Didn't find any slots with id: {}.", id);

return noContent().status(NOT_FOUND).build();
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Test
   public void testSlotRepresentationWithEditLinks() {
Slot thisSlot = newSlotStub(2);

Representation rep = factory.newSlotRepresentation(thisSlot,
	Optional.<Slot> empty(), Optional.<Slot> empty());

System.out.println(rep
	.toString(HAL_JSON, PRETTY_PRINT, COALESCE_ARRAYS));

List<Link> links = rep.getLinksByRel("edit");

links.stream().forEach(
	link -> {
	    String query = URI.create(link.getHref()).getQuery();

	    assertTrue("reserve=true".equals(query)
		    || "reserve=false".equals(query));
	});
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Test
   public void testSlotRepresentationWithNextAndPrevLinks()
    throws JsonProcessingException {
Slot thisSlot = newSlotStub(2);
Slot prevSlot = newSlotStub(1);
Slot nextSlot = newSlotStub(3);

Representation rep = factory.newSlotRepresentation(thisSlot,
	Optional.of(prevSlot), Optional.of(nextSlot));

System.out.println(rep
	.toString(HAL_JSON, PRETTY_PRINT, COALESCE_ARRAYS));

Link link = rep.getLinkByRel("prev");
assertEquals(slotUriBuilder.build(prevSlot.getId()).toString(),
	link.getHref());

link = rep.getLinkByRel("next");
assertEquals(slotUriBuilder.build(nextSlot.getId()).toString(),
	link.getHref());

String doctorId = rep.getValue("doctorId", "").toString();
assertEquals(thisSlot.getDoctorId(), doctorId);
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Test
   public void testSlotRepresentationWithPrevLink()
    throws JsonProcessingException {
Slot thisSlot = newSlotStub(2);
Slot prevSlot = newSlotStub(1);

Representation rep = factory.newSlotRepresentation(thisSlot,
	Optional.of(prevSlot), Optional.<Slot> empty());

System.out.println(rep
	.toString(HAL_JSON, PRETTY_PRINT, COALESCE_ARRAYS));

Link link = rep.getLinkByRel("prev");
assertEquals(slotUriBuilder.build(prevSlot.getId()).toString(),
	link.getHref());

link = rep.getLinkByRel("next");
assertNull(link);

String doctorId = rep.getValue("doctorId", "").toString();
assertEquals(thisSlot.getDoctorId(), doctorId);
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Test
   public void testSlotRepresentationWithNextLink()
    throws JsonProcessingException {
Slot thisSlot = newSlotStub(1);
Slot nextSlot = newSlotStub(2);

Representation rep = factory.newSlotRepresentation(thisSlot,
	Optional.<Slot> empty(), Optional.of(nextSlot));

System.out.println(rep
	.toString(HAL_JSON, PRETTY_PRINT, COALESCE_ARRAYS));

Link link = rep.getLinkByRel("next");
assertEquals(slotUriBuilder.build(nextSlot.getId()).toString(),
	link.getHref());

link = rep.getLinkByRel("prev");
assertNull(link);

String doctorId = rep.getValue("doctorId", "").toString();
assertEquals(thisSlot.getDoctorId(), doctorId);
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Test
   public void testSlotsRepresentation() {
List<Slot> slots = newSlotsStub();
Representation rep = factory.newSlotsRepresentation(slots);

System.out.println(rep
	.toString(HAL_JSON, PRETTY_PRINT, COALESCE_ARRAYS));

Link link = rep.getLinkByRel("self");

assertEquals(slotsUriBuilder.build().toString(), link.getHref());

link = rep.getLinkByRel("item");
String href = link.getHref();

assertTrue(slots.stream().anyMatch(
	slot -> href.endsWith(String.valueOf(slot.getId()))));

link = rep.getLinkByRel("start");
assertEquals(slotUriBuilder.build(slots.get(0).getId()).toString(),
	link.getHref());
   }
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
/**
 * Add all bean properties
 * from the supplied bean
 * to the representation
 * @param value
 * @return
 */
public ResponseEntityBuilder<ReadableRepresentation> withPage(Page<?> value, String uriTemplate, String... includeFields) {
	String[] fields = requestedFields == null ? includeFields : requestedFields;

	// Extract page data such as size, page number
	representation.withProperty("size", value.getSize());
	representation.withProperty("number", value.getNumber());
	representation.withProperty("numberOfElements", value.getNumberOfElements());
	representation.withProperty("totalElements", value.getTotalElements());

	// Next/back links
	if (value.hasNextPage()) {
		buildNextLink(representation, request);
	}
	if (value.hasPreviousPage()) {
		buildPreviousLink(representation, request);
	}

	// Build the content of the page
	for (Object object : value.getContent()) {
		Representation content = converter.convert(object, new UriTemplate(uriTemplate), fields);
		this.representation.withRepresentation("content", content);
	}
	return this;
}
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Test
public void testConvertEmbeddedManyToOne() {
	
	Customer customer = customer();
	Basket basket = basket(1);
	basket.setCustomer(customer);
	customer.getBaskets().add(basket);
	
	Representation representation = converter.convert(basket, new UriTemplate("/basket/{basketId}"));
	Assert.assertEquals("1", representation.getValue("basketId").toString());
	Collection<ReadableRepresentation> reps = representation.getResourceMap().get("customer");
	Assert.assertNotNull(reps);
	Assert.assertTrue(reps.size() == 1);
	
	System.out.println(representation.toString("application/hal+xml"));
}
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Override
public String serialize(ObjectResource res, CanonicalObjectReader reader) {
    objectCount = 0;
    // The object bound to this resource. .
    Object obj = res.getCanonicalObject();
    // The resource data model, with property exclusions and reference
    // treatments.
    ResourceDataModel rdm = res.getResourceDefinition().getResourceDataModel();
    Representation rep = createNewRepresentation(res);
    buildObjectRepresentation(rep, obj, reader, rdm, new Stack<Object>());
    return rep.toString(halFormat);
}
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
private Representation createNewRepresentation(Object canonicalObject, CanonicalObjectReader reader,
        ResourceDataModel rdm) {
    ObjectResourceDefinitionRegistry registry = ObjectResourceDefinitionRegistry.INSTANCE;
    ObjectResourceDefinition resourceDef = registry.getResourceDefinition(rdm.getCanonicalDataType());
    if (resourceDef != null) {
        return createNewRepresentation(resourceDef.getResource(canonicalObject, reader));
    } else {
        return representationFactory.newRepresentation();
    }
}
 

import com.theoryinpractise.halbuilder.api.Representation; //导入依赖的package包/类
@Override
public void representResource(Representation resource) {
	for (Link link : navigationLinks) {
		resource.withLink(link.getRel(), link.getUri());
	}
	resource.withProperty("startIndex", startIndex);
	resource.withProperty("itemCount", itemCount);
	StandardRepresentationFactory representationFactory = new StandardRepresentationFactory();
	for (BookmarkRepresentation bookmark : bookmarks) {
		resource.withRepresentation("item", 
				representationFactory.newRepresentation(bookmark.getSelfUri())
									.withLink(bookmark.getUrlLink().getRel(), bookmark.getUrlLink().getUri())
									.withProperty("name", bookmark.getName()));
	}
}