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Adding controller implementations

Pragya Keshap answered on February 18, 2023 Popularity 1/10 Helpfulness 1/10

answer Adding controller implementations

Adding controller implementations

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REST controller interfaces are already generated by the OpenAPI Codegen tool. We can now create an implementation of those interfaces. The only different thing this time is having the Reactive pipelines to call the services and assemblers. You should also only return ResponseEntity objects wrapped in either Mono or Flux based on the generated contract.

@RestController
public class OrderController implements OrderApi {
  private final OrderRepresentationModelAssembler assembler;
  private OrderService service;
  public OrderController(OrderService service, 
             OrderRepresentationModelAssembler assembler) {
    this.service = service;
    this.assembler = assembler;
  }
  @Override
public Mono<ResponseEntity<Order>> addOrder(@Valid Mono<NewOrder> newOrder,
    ServerWebExchange exchange) {
  return service.addOrder(newOrder.cache())
      .zipWhen(x -> service.updateMapping(x))
      .map(t -> status(HttpStatus.CREATED)
        .body(assembler.entityToModel(t.getT2(), exchange)))
      .defaultIfEmpty(notFound().build());
}
  @Override
public Mono<ResponseEntity<Flux<Order>>>     getOrdersByCustomerId(@NotNull @Valid String customerId,    ServerWebExchange exchange) {
  return Mono.just(ok(assembler.toListModel(
    service.getOrdersByCustomerId(customerId), exchange)));
}
@Override
public Mono<ResponseEntity<Order>> getByOrderId(String id,     ServerWebExchange exchange) {
  return service.getByOrderId(id).map(o ->                           assembler.entityToModel(o, exchange))
      .map(ResponseEntity::ok)
      .defaultIfEmpty(notFound().build());
}

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java

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Contributed on Feb 18 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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