![@Path("customers") public class DemoOverviewResource {
@GET @Path("{username}")
@Produces(APPLICATION_JSON)
public CustomerOverview retrieve(
@PathParam("username") String username) {
Customer customer = getCustomerInfo(username);
Contract[] contracts = getContracts(customer);
Communication[] communications = getCommunications(customer);
return createOverview(
customer,
contracts,
communications);
}](https://image.slidesharecdn.com/nljug-reactive-java8-141118043153-conversion-gate01/85/Reactive-programming-met-Java-8-en-Java-EE-7-Martijn-Blankestijn-4-320.jpg)
Reactive programming met Java 8 en Java EE 7 - Martijn Blankestijn
- 1. Reactive programming met Java SE 8 en Java EE 7 Martijn Blankestijn
- 2. Agenda ● Context ● Sequence, zonder futures ● Futures ● CompletableFuture ● Round-up
- 4. @Path("customers") public class DemoOverviewResource { @GET @Path("{username}") @Produces(APPLICATION_JSON) public CustomerOverview retrieve( @PathParam("username") String username) { Customer customer = getCustomerInfo(username); Contract[] contracts = getContracts(customer); Communication[] communications = getCommunications(customer); return createOverview( customer, contracts, communications); }
- 5. Customer Contract Communications TIME Sequential
- 6. A Future represents the result of an asynchronous computation
- 7. public interface Future<V> { boolean isDone(); V get() V get(long timeout, TimeUnit unit)
- 9. Customer Contract Communications TIME Sequential Futures
- 11. Reactive programming is a programming paradigm oriented around data flows and the propagation of change
- 13. CompletableFuture A Future that may be explicitly completed and may trigger actions upon its completion.
- 14. Chaining methods run thenAccept thenApply thenCompose whenComplete
- 15. Joining methods runAfterBoth thenAcceptBoth thenCombine ... allOf
- 16. Model the flow
- 18. Customer Contract Communications TIME Sequential Futures Completable Futures
- 19. Links ● Demo: https://github.com/martijnblankestijn/reactive-rest-demo ● JAX-RS ● Completable Future ● ManagedExecutor: JSR 236 Concurrency Utilities for Java EE ● Reactive Manifesto