juplo.de Git - demos/example-siren/blob - provider/src/main/java/io/pactflow/example/sirenprovider/controllers/OrderController.java

   1 package io.pactflow.example.sirenprovider.controllers;
   2
   3 import io.pactflow.example.sirenprovider.models.Order;
   4 import org.springframework.hateoas.CollectionModel;
   5 import org.springframework.hateoas.EntityModel;
   6 import org.springframework.hateoas.Link;
   7 import org.springframework.hateoas.RepresentationModel;
   8 import org.springframework.hateoas.server.ExposesResourceFor;
   9 import org.springframework.http.ResponseEntity;
  10 import org.springframework.web.bind.annotation.DeleteMapping;
  11 import org.springframework.web.bind.annotation.GetMapping;
  12 import org.springframework.web.bind.annotation.PathVariable;
  13 import org.springframework.web.bind.annotation.PutMapping;
  14 import org.springframework.web.bind.annotation.RequestMapping;
  15 import org.springframework.web.bind.annotation.RestController;
  16
  17 import java.util.Random;
  18
  19 import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.afford;
  20 import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
  21 import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
  22
  23 @RestController
  24 @ExposesResourceFor(Order.class)
  25 @RequestMapping(value = "/orders")
  26 public class OrderController {
  27
  28   @GetMapping
  29   public ResponseEntity<RepresentationModel<?>> orders() {
  30     Long id = Math.abs(new Random().nextLong());
  31     Order order = new Order(id);
  32     Link selfLink = actions(order);
  33     EntityModel<Order> model = EntityModel.of(order, selfLink);
  34     RepresentationModel<?> orders = CollectionModel.of(model);
  35     orders.add(linkTo(methodOn(OrderController.class).orders()).withSelfRel());
  36     return ResponseEntity.ok(orders);
  37   }
  38
  39   @GetMapping(value = "/{id}")
  40   public ResponseEntity<EntityModel<Order>> order(@PathVariable(value = "id", required = true) Long id) {
  41     Order order = new Order(id);
  42     Link selfLink = actions(order);
  43     EntityModel<Order> model = EntityModel.of(order, selfLink);
  44     return ResponseEntity.ok(model);
  45   }
  46
  47   @PutMapping("/{id}")
  48   public EntityModel<Order> update(@PathVariable(value = "id", required = true) Long id, Order order) {
  49     Link selfLink = actions(order);
  50     return EntityModel.of(order, selfLink);
  51   }
  52
  53   private Link actions(Order order) {
  54     return linkTo(methodOn(OrderController.class).order(order.getId())).withSelfRel()
  55       .andAffordance(afford(methodOn(OrderController.class).update(order.getId(), null)))
  56       .andAffordance(afford(methodOn(OrderController.class).delete(order.getId())))
  57       .andAffordance(afford(methodOn(OrderController.class).changeStatus(order.getId(), null)));
  58   }
  59
  60   @PutMapping("/{id}/status")
  61   public EntityModel<Order> changeStatus(@PathVariable(value = "id", required = true) Long id, String status) {
  62     Order order = new Order(id);
  63     Link selfLink = actions(order);
  64     return EntityModel.of(order, selfLink);
  65   }
  66
  67   @DeleteMapping("/{id}")
  68   public ResponseEntity<Void> delete(@PathVariable(value = "id", required = true) Long id) {
  69     return ResponseEntity.ok().build();
  70   }
  71 }