javaone2015報告会 in okinawa

JavaOne 2015 フィードバック

日本オラクル株式会社 Fusion Middleware事業統括本部伊藤敬 Dec. 20th, 2015

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Java EE 8 アップデート

3


Java Specification Request ステータス

JSR 366 – Java EE 8 Platform Early Draft Review (EDR)

JSR 369 – Servlet 4.0 – HTTP/2 EDR

JSR 365 – CDI 2.0 – CDI for Java SE, modularity & events EDR 完了

JSR 367 – JSON-B 1.0 – JSON Binding for Java Objects EDR 完了

JSR 371 – MVC 1.0 – Model View Controller, Action-Based, HTML framework EDR

JSR 368 – JMS 2.1 – MDB Improvements, CDI Managed Bean integration EDR

JSR 372 – JSF 2.3 – Integration with WebSocket, MVC, CDI, Java 8 DateTime EDR

JSR 374 – JSON-P 1.1 – Query enhancements, Java SE 8 improvements EDR 完了

JSR 375 – Security 1.0 – Simplifications, Cloud enhancements Early Draft策定中

JSR 370 – JAX-RS 2.1 – NIO, Server-Sent Events Early Draft策定中

JSR 373 – Management 2.0 – REST based Management Early Draft策定中

Java EE 8 仕様策定の状況 (as of 25/10/2015)

4


Java EE 8 主要テーマ

• HTML5 / Web Tier 機能拡張

•開発をより容易に / CDI のさらなる活用

• クラウドの実行・管理環境化


HTML5のサポート / Web Tier機能拡張

• JSON Binding

• JSON Processing 機能拡張

• Action-based MVC

• HTTP/2のサポート – Servlet 4.0

• Server-sent Events

– JAX-RS 2.1


JSON-B

• Javaオブジェクト / JSON間のマーシャル/アンマーシャルを実現するAPI – XMLのJAXBランタイムAPIと類似

•既存のJSON Binding実装の成果を活用 – MOXy, Jackson, GSON, Genson, Xstream, …

– JSON Bindingプロバイダの変更を可能にする

8

Java API for JSON Binding


JSON-B 1.0 @Entity public class Person { @Id String name; String gender; @ElementCollection Map<String,String> phones; ... // getters and setters } Person duke = new Person(); duke.setName("Duke"); duke.setGender("M"); phones = new HashMap<String,String>(); phones.put("home", "650-123-4567"); phones.put("mobile", "650-234-5678"); duke.setPhones(phones); Jsonb jsonb = JsonbBuilder.create(); jsonb.toJson(duke, System.out) ;

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-234-5678"}

}


• JSONデータがクライアントからデータベースまで連続的に処理可能に – JSON-Bによって、JAX-RSで“application/json”メディアタイプが標準的に利用

JSON-B 1.0

JPA JSON-B

Data Source

JSON Java Objects


JSON-P 1.1

• JSON-P の継続的な更新を維持

•新しい標準への対応

• JsonObject、JsonArrayに編集機能を追加する

• Java SE 8のStream処理を使いやすくするHelperクラス、メソッドの追加

Java API for JSON Processing


JSON-P 1.1

• JSON-Pointer – IETF RFC 6901

– JSON文書の中の特定の値を参照するための文字列の構文を規定する

"/0/phones/mobile"

新しい標準への対応


JSON-P 1.1 JsonArray contacts = Json.createArrayBuilder()

.add(Json.createObjectBuilder()

.add("name", "Duke")

.add("gender", "M")

.add("phones", Json.createObjectBuilder()

.add("home", "650-123-4567")

.add("mobile", "650-234-5678")))

.add(Json.createObjectBuilder()

.add("name", "Jane")

.add("gender", "F")

.add("phones", Json.createObjectBuilder()

.add("mobile", "707-555-9999")))

.build();

[

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-234-5678"}},

{

"name":"Jane",

"gender":"F",

"phones":{

"mobile":"707-555-9999"}}

]


JSON-P 1.1

JsonArray contacts = ...;

JsonPointer p =

new JsonPointer("/0/phones/mobile");

JsonValue v = p.getValue(contacts);

[

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-234-5678"}},

{

"name":"Jane",

"gender":"F",

"phones":{

"mobile":"707-555-9999"}}

]


JSON-P 1.1


JsonPointer p =


contacts = p.replace(contacts, "650-555-1212");

[

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-234-5678"}},

{

"name":"Jane",

"gender":"F",

"phones":{

"mobile":"707-555-9999"}}

]


JSON-P 1.1


JsonPointer p =


contacts = p.replace(contacts, "650-555-1212");

[

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-555-1212"}},

{

"name":"Jane",

"gender":"F",

"phones":{

"mobile":"707-555-9999"}}

]


JSON-P 1.1

• JSON-Patch – IETF RFC 6902

• Patch is a JSON document

– JSONドキュメントを修整するためのオブジェクト / 処理の配列

– add, replace, remove, move, copy, test

–必ず “op” フィールドと “path” フィールドが必要

[

{"op":"replace", "path":"/0/phones/mobile", "value":"650-111-2222"},

{"op":"remove", "path":"/1"}

]

新しい標準への対応


JSON-P 1.1 JsonPatchBuilder builder = new JsonPatchBuilder();

JsonArray patch =

builder.replace("0/phones/mobile", "650-111-2222")

.remove("/1")

.build();

[

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-234-5678"}},

{

"name":"Jane",

"gender":"F",

"phones":{

"mobile":"707-555-9999"}}

]



JsonArray patch =


.remove("/1")

.build();

JsonArray result = patch.apply(contacts);

[

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-111-2222"}},

{

"name":"Jane",

"gender":"F",

"phones":{

"mobile":"707-555-9999"}}

]



JsonArray patch =


.remove("/1")

.build();

JsonArray result = patch.apply(contacts);

[

{

"name":"Duke",

"gender":"M",

"phones":{

"home":"650-123-4567",

"mobile":"650-111-2222"}}

]


Model View Controller (MVC)

• Component-based MVC

–コンポーネントフレームワークを活用するタイプ

– Controller はフレームワークが提供する

– JSF, Wicket, Tapestry…

• Action-based MVC

– Controllerはアプリケーションで定義される

– Struts 2, Spring MVC…

2つのタイプ


MVC 1.0

• アクション・ベースのModel-View-Controller アーキテクチャの追加

•既存のJava EEテクノロジーを組み合わせて実現： – Model

• CDI, Bean Validation, JPA

– View • Facelets, JSP

– Controller • JAX-RS リソースメソッド

Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | 27

JSP, Facelets CDI Bean

JAX-RS Resource Methods

Bean Validation


MVC 1.0

@Path("hello")

public class HelloController {

@Inject

private Greeting greeting;

@GET

@Controller

public String hello() {

greeting.setMessage("Hello there!");

return "hello.jsp";

}

}

JAX-RS controller


MVC 1.0

@Path("hello")

public class HelloController {

@Inject

private Greeting greeting;

@GET

@Controller

public String hello() {

greeting.setMessage("Hello there!");

return "hello.jsp";

}

}

JAX-RS controller Model

@Named

@RequestScoped

public class Greeting {

private String message;

public String getMessage() {

return message;

}

public void setMessage(message) {

this.message = message;

}

}


MVC 1.0

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

<title>Hello</title>

</head>

<body>

<h1>${greeting.message}</h1>

</body>

</html>

View


JSP, Facelets CDI Bean

JAX-RS Resource Methods

Bean Validation


HTTP/2

• 一つのTCP接続を多重化

• リクエストは “Stream"と呼ばれるデータ単位で送受信

– 多重化

– Stream単位で重み付け

• バイナリフレームレイヤ

–Server Push

• ヘッダ圧縮

Multiplexed Binary Frames POST /upload HTTP/1.1 Host: www.test.com Content-Type: application/json Content-Length: 15 {“name”:“duke”}

HTTP 1.1 HTTP/2

HEADERS frame

DATA frame

http://www.test.com

http://www.test.com


HTTP/2 サーバプッシュ

client server

.html

.js

.png

.css

• SSE/WebSocketとは用途が異なる

• 関連リソースをサーバプッシュ

• htmlの要求がきたら

• 関連のjs, png, css もプッシュする


34


35


Servlet 4.0 HTTP/2 サーバプッシュのサンプル

public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { PushBuilder builder = request.getPushBuilder(); builder.setPath(“/style.css”); builder.push(); res.setContentType(“text/html”); PrintWriter out = res.getPrintWriter(); out.println(“<html>”); out.println(“<head>”) out.println(“<link rel=¥”stylesheet¥” type=¥”text/css¥” href=¥“style.css¥”>”); … }


開発をより容易に

• CDI 活用範囲の拡大

• Security インターセプタ

• JMS : Message-Briven Beanのメッセージ処理を簡素化

• JAX-RS injection の導入

• WebSocket スコープ

• Pruning - EJB 2.x client view, IIOPとの互換性

37


CDI 2.0

• Modularity

• Java SE support

• Asynchronous Events

• Event ordering

• …

利用範囲の拡大と機能強化

38

http://www.slideshare.net/dblevins1/2015-javaone-ejbcdi-alignment


https://published-rs.lanyonevents.com/published/oracleus2015/sessionsFiles/2550/CON2391_Paumard-The%20Path%20to%20CDI%202.0.pdf


Java EE仕様策定に貢献しませんか？？

• Adopt a JSR

– http://glassfish.org/adoptajsr

• Join an Expert Group project

– http://javaee-spec.java.net

– https://java.net/projects/javaee-spec/pages/Specifications

• The Aquarium

– http://blogs.oracle.com/theaquarium

• Java EE 8 Reference Implementation

– http://glassfish.org

興味ある方は是非参画ください！！！

http://glassfish.org/adoptajsr




http://javaee-spec.java.net



https://java.net/projects/javaee-spec/pages/Specifications






http://blogs.oracle.com/theaquarium

http://glassfish.org

javaone2015報告会 in okinawa

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