Java EE 8 What s coming? David Delabassee Oracle May 17, 2017

Transcription

1 Java EE 8 What s coming? David Delabassee Oracle May 17, 2017

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3 Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle.

4 Java EE APIs - Backbone of Leading Open Source Projects Web Frameworks REST Microservices Web Containers Java EE Containers PaaS

5 Java EE 8

6 JAX-RS 2.1 Reactive Client API Server-sent events Hypermedia API enhancements Integration with other JSRs and frameworks

7 JAX-RS 2.0 client newclient(); name client.target(" ).get( class); //... client.close();

8 JAX-RS 2.0 // myresource client.target(" "joe").queryparam("dpt", "1").header("some-header", "true"); response myresource.request( ).get(); //...

9 JAX-RS 2.0 client newclient(); myresource client target(" response myresource request( ).async().get( class); //...

10 JAX-RS 2.0 myresource client target(" fcustomer myresource request( ).async().get( () { ); ( customer) { // work on the customer ( throwable) { // Oops!

11 JAX-RS 2.0

12 JAX-RS 2.0 destination.path("recommended").request().header("rx-user", "Async").async().get( InvocationCallback<List<Destination>>() { completed( List<Destination> recommended) { CountDownLatch innerlatch = CountDownLatch(recommended.size()); Map<String, Forecast> forecasts = Collections.synchronizedMap( HashMap<>()); ( Destination dest : recommended) { forecast.resolvetemplate("dest", dest.getdestination()).request().async().get( InvocationCallback<Forecast>() { completed( Forecast forecast) { forecasts.put(dest.getdestination(), forecast); innerlatch.countdown();

13 JAX-RS 2.0 failed( Throwable throwable) { innerlatch.countdown(); ); { (!innerlatch.await(10, TimeUnit.SECONDS)) { // timeout ( InterruptedException e) { // Ooops, interrupted! // Continue with processing failed( Throwable throwable) { // Recommendation error );

14 JAX-RS 2.1 response newclient().target(" fresponse newclient().target(" csresponse newclient().target("

15 JAX-RS 2.1 csp client target("price/{destination").resolvetemplate("destination", "Paris").request().rx().get( class); csf client target("forecast/{destination").resolvetemplate("destination", "Paris").request().rx().get( class); csp thencombine( csf, (price, forecast) reserveifafforadble(price, forecast) );

16 JAX-RS 2.1 Server-Sent Events Persistent, one-way communication channel Text protocol, special media type "text/event-stream" Server can send multiple messages (events) to a client Can contain id, name, comment retry interval Supported in all modern browsers

17 JAX-RS 2.1 SSE SseEvent ID, Name, Comment, OutboundSseEvent Server-side representation of a Server-sent event OutboundSseEvent.Builder() InboundSseEvent Client-side representation of a Server-sent event

18 JAX-RS 2.1 SSE Server side SseEventSink Outbound Server-Sent Events public void sse) { eventsink.send( sse.newevent("an event") ); eventsink.send( sse.newevent("another event") );... eventsink.close();

19 JAX-RS 2.1 SSE Client side SseEventSource Client for processing incoming Server-Sent Events es.target(sse_target).reconnectingevery(5, ).build(); es.register( out println); // InboundSseEvent consumer es.open();... es.close();

20 JSON-P 1.1 Update JSON-P spec to stay current with emerging standards RFC The JavaScript Object Notation (JSON) Data Interchange Format RFC 6901 JSON Pointer RFC 6902 JSON Patch RFC 7396 JSON Merge Patch Add editing/transformation operations to JsonObject and JsonArray Add JSON Collectors Big JSON support

21 JSON-P 1.1 JSON-Pointer IETF RFC 6901 String syntax for referencing a JSON value E.g. "/0/user/address"

22 JSON-P 1.1 contacts pointer ("/0/name"); value pointer getvalue(contacts); [ { "name":"duke", "gender":"m", "phones":{ "home":" ", "mobile":" ", { "name":"jane", "gender":"f", "phones":{ "mobile":" " ]

23 JSON-P 1.1 JSON-Pointer IETF RFC 6901 String syntax for referencing a JSON value E.g. "/0/user/address Methods getvalue(), add(), replace(), remove() pointer ("/0/name"); result pointer replace(contacts, createvalue("joe"));

24 JSON-P 1.1 JSON-Patch IETF RFC 6902 Patch is a JSON document Array of objects / operations for modifying a JSON document Add, replace, remove, move, copy, test

25 JSON-P 1.1 [ ] { "op" : "replace", "path" : "/0/phones/mobile", "value" : " ", { "op" : "remove", "path" : "/1" [ ] { "name" : "Duke", "gender" : "M", "phones" : { "home" : " ", "mobile" : " ", { "name" : "Jane", "gender" : "F", "phones" : { "mobile" : "

26 JSON-P 1.1 [ ] { "op" : "replace", "path" : "/0/phones/mobile", "value" : " ", { "op" : "remove", "path" : "/1" [ ] { "name" : "Duke", "gender" : "M", "phones" : { "home" : " ", "mobile" : " ", { "name" : "Jane", "gender" : "F", "phones" : { "mobile" : "

27 JSON-P 1.1 [ ] { "op" : "replace", "path" : "/0/phones/mobile", "value" : " ", { "op" : "remove", "path" : "/1" [ ] { "name" : "Duke", "gender" : "M", "phones" : { "home" : " ", "mobile" : " ", { "name" : "Jane", "gender" : "F", "phones" : { "mobile" : "

28 JSON-P 1.1 [ ] { "op" : "replace", "path" : "/0/phones/mobile", "value" : " ", { "op" : "remove", "path" : "/1" [ ] { "name" : "Duke", "gender" : "M", "phones" : { "home" : " ", "mobile" : " ", { "name" : "Jane", "gender" : "F", "phones" : { "mobile" : "

29 JSON-P 1.1 [ ] { "op" : "replace", "path" : "/0/phones/mobile", "value" : " ", { "op" : "remove", "path" : "/1" [ ] { "name" : "Duke", "gender" : "M", "phones" : { "home" : " ", "mobile" : " ", { "name" : "Jane", "gender" : "F", "phones" : { "mobile" : "

30 JSON-P 1.1 [ ] { "op" : "replace", "path" : "/0/phones/mobile", "value" : " ", { "op" : "remove", "path" : "/1" [ ] { "name" : "Duke", "gender" : "M", "phones" : { "home" : " ", "mobile" : " "

31 JSON-P 1.1 target ; patch ; jsonpatch (patch); result jsonpatch.apply(target); builder (); result builder.add("/joe/phones/office", " ").remove("/Amy/age").apply(target);

32 JSON-P 1.1 JSON-Patch & JSON-Merge Patch Diff output diff(original, target); diff diff(original, target);

33 JSON-B 1.0 JAXB-like API to marshal/unmarshal Java objects to/from JSON documents Default mapping between classes and JSON Customization APIs Runtime configuration builder Allows to swap providers Natural follow on to JSON-P closes the JSON support gap

34 JSON-B 1.0 phone1 (); phone1 setbrand("apple"); phone1 setmodel("iphone 7"); phone1 setstock(1); inventory (); inventory add(phone1); inventory add(phone2); jsonb create(); stock = jsonb tojson(inventory); [ ] { "brand" : "Apple", "model" : "iphone 7", "stock" : 1, { "brand" : "Samsung", "model" : "Galaxy Note 7", "stock" : 666

35 JSON-B 1.0 Customizations Customer { id; ("name") firstname; Customer { id; getfirstname() { firstname;

36 JSON-B 1.0 Customizations Naming strategies Property ordering Property to ignore Null handling Custom instantiation Fields visibility Date/Number Formats Adapters

37 JSON-B 1.0 Customizations jsonb create(); //Ordering, naming strategy, encoding, Locale, config ().withformatting( ).withadapters( ()); jsonb create(config); jsonb newbuilder("myprovider");

38 Servlet 4.0 Support for HTTP/2 Request/response multiplexing Server push Upgrade from HTTP 1.1 Smaller community-requested improvements Allow setting the default context-path without resorting to container specific config Allow setting the jsp-file programmatically Allow encoding to be set from deployment descriptor Servlet Mapping API

39 HTTP/2 Binary Framing over single TCP connection Request/Response multiplexing Stream Prioritization Server Push Upgrade from HTTP 1.1 Header Compression Preserve HTTP semantic Flow Control

40 Servlet 4.0 PushBuilder builder = myrequest.newpushbuilder(); builder.addheader("x-pusher", ); builder.path("resource").push();

41 JSF 2.3 Better CDI Integration Way more things are injectable Finally marking legacy managed beans as deprecated Java Time support WebSocket Integration Ajax Method Invocation Class Level Bean Validation UIData and UIRepeat improvements

42 CDI 2.0 Define behavior of CDI outside of a Java EE container API to bootstrap a CDI container in Java SE Spec split into 3 parts: CDI Core CDI for Java SE CDI for Java EE Apply Interceptor on Producer Observers ordering Asynchronous events

43 CDI Event<PaymentEvent> debitevent; // producer debitevent.fire(somepayload); // consumer public void Payload p) {

44 CDI 2.0 // consumer A public void anobesrver(@observes Payload p) { // consumer B public void anotherobesrver(@observes Payload p) {

45 CDI 2.0 // consumer A public void Payload p) { // consumer B public void Payload p) {

46 CDI Event<PaymentEvent> debitevent; // async producer debitevent.fireasync(somepayload); // async consumer public void Payload p) {

47 Bean Validation 2.0 Embrace Java SE 8 Support for new Date/Time API Constraints applied to collection elements Optional wrappers Repeatable annotations Introduce new Additional features requested from community

48 Bean Validation > primaryaddressbycustomer; > = "fr", groups = Default.class, message = "unvalid = "fr", groups = SuperUser.class, message = "zip nok ") zipcode;

49 Security API for Java EE Authentication Mechanism Simplify application-accessible authentication mechanisms Identity Store Standardize application-accessible Identity Store Validate Caller's credentials and accessing related identity attributes Used by an authentication mechanism Security Context Standardize a platform-wide Security Context Programmatic access point

50 Wrap-up

51 Java EE 8 Batch Dependency Injection JACC JAXR JSTL Management Bean Validation Deployment JASPIC JMS JTA Servlet CDI EJB JAX-RPC JSF JPA Web Services Common Annotations EL JAX-RS JSON-P JavaMail Web Services Metadata Concurrency EE Interceptors JAX-WS JSP Managed Beans WebSocket Connector JSP Debugging JAXB JSON-B Security (*) MRs Releases not listed

52 Java EE 8 - Summary Work in progress Final Release - July 2017 (plan) Open Source Reference Implementations Contribute! Adopt A JSR Stay tuned

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