java ee 8 adopt a jsr : json-p 1.1 & mvc 1.0

@delabassee#JavaEE8

Adopt A JSR - Java EE 8

David Delabassee @delabassee Oracle

Copyright © 2015, Oracle and/or its affiliates. All rights reserved. @delabassee#JavaEE8

Agenda

• Java EE 8 • Adopt JSON-‐P 1.1 (JSR 374) • Adopt MVC 1.0 (JSR 371)

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Java EE 8 Themes

• HTML5 / Web Tier Enhancements • Ease of Development • Infrastructure for running in the Cloud

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Java EE 8 Themes


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HTML5 Support / Web Tier Enhancements

• JSON Binding • JSON Processing enhancements • Server-‐sent Events • Action-‐based MVC • HTTP/2 support

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HTML5 Support / Web Tier Enhancements

• JSON Binding • JSON Processing enhancements • Server-‐sent Events • Action-‐based MVC • HTTP/2 support

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Java EE 8 Themes


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Ease of Development

• CDI alignment • JAX-‐RS injection alignment • Simplified messaging through CDI-‐based “MDBs” • WebSocket scopes • Pruning of EJB 2.x client view and IIOP interoperability • Security interceptors • …

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Java EE 8 Themes


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Modernize the Infrastructure

• Java EE Management 2.0 – REST-‐based APIs for Management and Deployment

• Java EE Security 1.0 – Authorization – Password Aliasing – User Management – Role Mapping – Authentication – REST Authentication

For On-‐Premise and for in the Cloud

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Java EE 8 JSRs

• MVC 1.0 (JSR 371) * • CDI 2.0 (JSR 365) • JSON-‐P 1.1 (JSR 374) • JSF 2.3 (JSR 372) • Java EE Security 1.0 (JSR 375) • JSON Binding 1.0 (JSR 367)

• JMS 2.1 (JSR 368) • Java Servlet 4.0 (JSR 369) • JAX-‐RS 2.1 (JSR 370) • Java EE Management 2.0 (JSR 373) • Java EE 8 Platform (JSR 366)

So far…..

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And More to Follow…

• JCache • Bean Validation • JPA • Connector Architecture • WebSocket • Interceptors

• EJB • JTA • Batch • Concurrency Utilities • JavaMail • …

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Roadmap• Tentative Delivery Schedule –Q3 2014: Expert Group formed –Q3 2015: Early Draft –Q4 2015: Public Review –Q2 2016: Proposed Final Draft – H1 2017: Final Release

• Contribute!

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How to Get Involved

• Join an Expert Group – http://javaee-‐spec.java.net

• Adopt a JSR – http://glassfish.org/adoptajsr

• The Aquarium – http://blogs.oracle.com/theaquarium

• Java EE Reference Implementation – http://glassfish.org

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http://javaee-spec.java.net

http://glassfish.org/adoptajsr




http://blogs.oracle.com/theaquarium

http://glassfish.org


JSON-‐P 1.1

• Keep JSON-‐P spec up-‐to-‐date • Track new standards • Add editing operations to JsonObject and JsonArray • Java SE 8 • JSON Big Data

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JSR 374


JSON-‐P 1.1

• String syntax for referencing a JSON value "/0/phone/mobile"

JSON-‐Pointer – IETF RFC 6901

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JSON-‐P 1.1JsonArray contacts = … JsonPointer pointer = new JsonPointer("/0/name"); JsonValue value = pointer.getValue(contacts);

[ { "name":"Duke", "gender":"M", "phones":{ "home":"650-‐123-‐4567", "mobile":"650-‐234-‐5678"}}, { "name":"Jane", "gender":"F", "phones":{ "mobile":"707-‐555-‐9999"}} ]

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JSON-‐P 1.1

• String syntax for referencing a JSON value “/0/name"

• Methods – getValue() – JSON operations: add(), replace(), remove()

JSON-‐Pointer – IETF RFC 6901

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JsonPointer pointer = new JsonPointer("/0/name"); JsonArray result = pointer.replace(contacts, Json.createValue("Alex"));


JSON-‐P 1.1

• Patch is a JSON document – Array of objects / operations for modifying a JSON document – add, replace, remove, move, copy, test

JSON-‐Patch – IETF RFC 6902

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JSON-‐P 1.1[ { "op":"replace", "path":"/0/phones/mobile", "value":"650-‐111-‐2222"}, { "op":"remove", "path":"/1"} ]


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[ { "name":"Duke", "gender":"M", "phones":{ "home":"650-‐123-‐4567", "mobile":"650-‐111-‐2222"}} ]

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JsonArray target = …; JsonArray patch = …; JsonPatch jsonpatch = new JsonPatch(patch); JsonArray result = jsonpatch.apply(target);

JSON-‐P 1.1

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JsonPatchBuilder builder = new JsonPatchBuilder(); JsonArray result = builder.add("/Joe/phones/office", "1234-‐567") .remove("/Amy/age") .apply(contacts);


JSON-‐P 1.1 { "title": "Hello!", "phoneNumber": "+01-‐123-‐456-‐7890", "author": { "familyName": null }, "tags": [ "example" ] }

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{ "title": "Goodbye!", "author": { "givenName": "John", "familyName": "Doe" }, "tags": [ "example", "sample" ], "content": "This will be unchanged" }

{ "title": "Hello!", "author": { "givenName": "John" }, "tags": [ "example" ], "content": "This will be unchanged", "phoneNumber": "+01-‐123-‐456-‐7890" }

JSON-‐Merge Patch – IETF RFC 7386


JSON-‐P 1.1

• Reverse operation – Given two objects returns the patch to apply (diff)

JSON-‐Patch & JSON-‐Merge Patch Diff

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JsonValue output = JsonMergePatch.diff(original, target); JsonArray diff = JsonPatch.diff(original, target);


JSON-‐P 1.1JSON Query collecting results in JsonArray

JsonArray cars = ...; JsonArray audis = cars.getValuesAs(JsonObject.class).stream() .filter(x-‐>"Audi".equals(x.getString("brand"))) .map(x-‐>(x.getString("serial")) .collect(JsonCollectors.toJsonArray());

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JSON-‐P 1.1Getting Started

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• JSR 374 - https://json-‐processing-‐spec.java.net

• JIRA - https://java.net/jira/browse/JSON_PROCESSING_SPEC

• Repos - git://java.net/json-‐processing-‐spec~git - git://java.net/jsonp~git

https://json-processing-spec.java.net

https://java.net/jira/browse/JSON_PROCESSING_SPEC

git://java.net/json-processing-spec~git

git://java.net/jsonp~git


JSON-‐P 1.1Getting Started

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• Build the standalone RI - git://java.net/jsonp~git

• Check JSR374 tests and the Javadocs - https://json-‐processing-‐spec.java.net/nonav/snapshots/1.1/javadocs/

• Follow the EG users list - JSON Big Data

git://java.net/jsonp~git

https://json-processing-spec.java.net/nonav/snapshots/1.1/javadocs/

Copyright © 2015, Oracle and/or its affiliates. All rights reserved.

Model-‐View-‐Controller (MVC 1.0) Specification

• “Action-‐based” MVC 1.0 JSR • Why? – UI landscape is not one size fits all – Java EE 8 Community Survey – Talking to our customers, etc.

• EG –Oracle, RedHat, innoQ, IBM, Caelum, LifeRay, and 6 individuals members

JSR 371

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MVC 1.0

• Model – CDI, Bean Validation, JPA

• View – Facelets, JSP, SPI?

• Controller – Invent new technology Vs. Leverage existing technologies?

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Glues together key Java EE technologies


Controller• Combine data models and views to produce web application pages

@Path("hello") public class HelloController {

@GET@Controllerpublic String hello() {

return "hello.xhtml";}

}

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Controller• Class/method decorated with @Controller

@Path(“hello") @Controller public class HelloController {

@GET@View(“hello.ftl")public void hello() { }

}

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Controller

@Path(“hello") @Controller public class HelloController {

@GETpublic Viewable hello() {

return new Viewable("hello.jsp"); } }

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Controller

… @GET @Controller public Response getById(@PathParam("id") String id) { if (id.length() == 0) { return Response.status(Response.Status.BAD_REQUEST) .entity(“error.xhtml") .build(); } }

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Model• “Refers to the data” • javax.mvc.Models interface • CDI @Named bean (recommended)

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Model @Named(“greeting”) @RequestScoped public class Greeting {

private String message;

public String getMessage() { return message;

} public void setMessage(String message) { this.message = message; } }

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Model

@Path(“hello”) public class HelloController {

@Inject private Models models;

@GET @Controller public String hello() { models.put(“greeting”, new Greeting(“Hi JPrime”)); return “hello.ftl”; } }

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View• Define the structure of the output • Can refer to model(s) • Rendered by a View Engine – JSP – Facelets

• Not accessible as static resources – /WEB-‐INF/views/

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View

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<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC …> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html"> <h:head> <title>Facelet!</title> </h:head> <h:body> <p>${greeting.message} to all</p> </h:body> </html>


View

<%@ page contentType=“text/html;charset=UTF-8” language=“java” %> <html> <head> <title>Hello</title> </head> <body> <p>${greeting.message}</p> </body> </html>

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View Engine• CDI based extension mechanism • javax.mvc.engine.ViewEngine interface

boolean supports(String view);

void processView(ViewEngineContext context)

throws ViewEngineException;

• Ozark – JSP & Facelets – FreeMarker, Velocity, Thymeleaf, Mustache & Handlebars

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JSR 371• View Engine – JSP & Facelets – FreeMarker, Velocity, Thymeleaf, Mustache, Handlebars & Pebble

• Validation • Exception Mapping Providers • Bootstrap via javax.ws.rs.core.Application • @Produces • CDI Events

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Early Draft Review


MVC 1.0

• JSR 371 - http://mvc-‐spec.java.net/

- https://jcp.org/en/jsr/detail?id=371 - https://java.net/jira/browse/MVC_SPEC

- https://java.net/projects/mvc-‐spec/lists/users/archive

• Ozark - https://ozark.java.net - git://java.net/ozark~sources + https://github.com/spericas/ozark

Getting Started

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http://mvc-spec.java.net/

https://jcp.org/en/jsr/detail?id=371

https://java.net/jira/browse/MVC_SPEC

https://java.net/projects/mvc-spec/lists/users/archive

https://ozark.java.net

git://java.net/ozark~sources

https://github.com/spericas/ozark


MVC 1.0

• Docker script - https://ozark.java.net/download.html

• Samples - http://<container-‐ip>:8080/samples

• GF console (admin/ozark) - http://<container-‐ip>:4848

Getting Started

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https://ozark.java.net/download.html




MVC 1.0

• GlassFish 4.1 nightly - http://dlc-‐cdn.sun.com/glassfish/4.1/nightly/glassfish-‐4.1-‐b14-‐06_12_2015.zip

• Bundle Ozark with your App • Maven Central

<groupId>javax.mvc</groupId> <artifactId>javax.mvc-‐api</artifactId> <version>1.0-‐edr1</version>

Getting Started

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http://dlc-cdn.sun.com/glassfish/4.1/nightly/glassfish-4.1-b14-06_12_2015.zip


MVC 1.0

• Full blown samples • Additional templating engine • Logging, monitoring, i.e. improving event mechanism in place • Internationalization/localization • …

Getting Started

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Devoxx UK

• JCP, Adopt-‐a-‐JSR & You -‐ Thursday at 12:50 (Room BC) • Java EE 8, a snapshot overview -‐ Thursday at 11:50 (Auditorium) • Java EE Game Changers -‐ Friday at 10:00 (Room A) • HTTP/2 comes to Java -‐ Friday at 11:10 12:00 (Auditorium) • CDI 2.0: what is in the work? -‐ Friday at 15:00 (Auditorium) • Finally, Security API JSR 375 -‐ Friday at 16:20 (Room DEF)

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Thanks!

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Safe Harbor Statement

The precding 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.


java ee 8 adopt a jsr : json-p 1.1 & mvc 1.0

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