InterConnect 2016 Java EE 7 Overview (PEJ-5296)

PEJ-5296 Java EE 7 Overview Kevin Sutter, STSM WebSphere Java EE Architect Twitter: @kwsutter LinkedIn: https://www.linkedin.com/in/kevinwsutter

Please Note:

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•  IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion.

•  Information regarding potential future products is intended to outline our general product direction and it should not be relied on in

making a purchasing decision. •  The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any

material, code or functionality. Information about potential future products may not be incorporated into any contract. •  The development, release, and timing of any future features or functionality described for our products remains at our sole discretion. •  Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual

throughput or performance that any user will experience will vary depending upon many factors, including considerations such as the amount of multiprogramming in the user’s job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.

Java: Broadest Industry Adoption

10,000,000 JAVA DEVELOPERS

DEPLOYING TO 18 COMPLIANT APPLICATION SERVERS

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Java EE 7 Platform Jun 12, 2013

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The Year of Java EE 7

Note: Unsupported Platforms

Note: Unsupported platforms “WebLogic 12.2.1 with full support for Java EE 7 is slated to be released in just months (the officially sanctioned timeline states calendar year 2015 which means the end of this year at the very latest)” https://blogs.oracle.com/reza/entry/the_ghosts_of_java_ee, 8 June 2015

IBM Marketing Announce

WAS V8.0 – First fully-supported Java EE 6 Server WAS V8.5.5.6 – First fully-supported Java EE 7 Server

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Java EE 7 Themes

§  Batch §  Concurrency §  Simplified JMS

§  More annotated POJOs §  Less boilerplate code §  Cohesive integrated

platform

DEVELOPER PRODUCTIVITY

§  WebSockets §  JSON §  Servlet 3.1 NIO §  REST

MEETING ENTERPRISE DEMANDS

Java EE 7

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Top Ten Features in Java EE 7

1.  WebSocket client/server endpoints 2.  Batch Applications 3.  JSON Processing 4.  Concurrency Utilities 5.  Simplified JMS API 6.  @Transactional and @TransactionScoped7.  JAX-RS Client API 8.  Default Resources 9.  More annotated POJOs 10.  Faces Flow

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Java API for WebSocket 1.0/1.1

•  Server and Client WebSocket Endpoint

– Annotated: @ServerEndpoint, @ClientEndpoint

– Programmatic: Endpoint

•  Lifecycle events support

•  Standard Packaging and Deployment

@ServerEndpoint("/chat") public class ChatServer { @OnMessage public void chat(String m) { . . . } }

Available Liberty v8.5.5.6 and WAS v9 Beta!

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Java API for WebSocket 1.0

@ServerEndpoint("/chat")

public class ChatBean {

static Set<Session> peers = Collections.synchronizedSet(...); @OnOpen public void onOpen(Session peer) { peers.add(peer); } @OnClose public void onClose(Session peer) { peers.remove(peer); } . . .

Chat Server

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Java API for WebSocket 1.0

. . . @OnMessage

public void message(String message) {

for (Session peer : peers) { peer.getRemote().sendObject(message); } } }

Chat Server (contd.)

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JSON Processing 1.0

•  API to parse and generate JSON

•  Streaming API

–  Low-level, efficient way to parse/generate JSON

–  Similar to StAX API in XML world

•  Object Model API

–  Simple, easy to use high-level API

–  Similar to DOM API in XML world


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{

"firstName": "John", "lastName": "Smith", "age": 25, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ] }

JsonParser p = Json.createParser(...); JsonParser.Event event = p.next(); // START_OBJECT event = p.next(); // KEY_NAME event = p.next(); // VALUE_STRING String name = p.getString(); // "John”

Java API for JSON Processing 1.0

Streaming API

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Batch Applications for Java Platform 1.0

•  Suited for non-interactive, bulk-oriented, and long-running tasks

•  Batch execution: sequential, parallel, decision-based

•  Processing Styles

–  Item-oriented: Chunked (primary)

–  Task-oriented: Batchlet


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Batch Applications 1.0

Concepts

Metadata for jobs

Manage batch process

Batch process

Independent sequential phase of job

Chunk

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<step id="sendStatements"> <chunk item-count="3"> <reader ref="accountReader"/> <processor ref="accountProcessor"/> <writer ref="emailWriter"/></step>

...implements ItemReader { public Object readItem() { // read account using JPA}

...implements ItemProcessor {Public Object processItems(Object account) { // read Account, return Statement}

...implements ItemWriter {public void writeItems(List statements) { // use JavaMail to send email}

Batch Applications 1.0

Chunked Job Specification

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Concurrency Utilities for Java EE 1.0

•  Extension of Java SE Concurrency Utilities API

•  Provide asynchronous capabilities to Java EE application components

•  Provides 4 types of managed objects

–  ManagedExecutorService

–  ManagedScheduledExecutorService

–  ManagedThreadFactory

–  ContextService

•  Context Propagation


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Concurrency Utilities for Java EE 1.0

public class TestServlet extends HttpPServlet { @Resource(name="java:comp/DefaultManagedExecutorService") ManagedExecutorService executor; Future future = executor.submit(new MyTask()); class MyTask implements Runnable { public void run() { . . . // task logic } } }

Submit Tasks to ManagedExecutorService using JNDI

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Java Message Service 2.0

•  New JMSContext interface

•  AutoCloseable JMSContext, Connection, Session, …

•  Use of runtime exceptions

•  Method chaining on JMSProducer

•  Simplified message sending

Get More from Less Java EE 7


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@Resource(lookup = "myConnectionFactory") ConnectionFactory connectionFactory;

@Resource(lookup = "myQueue") Queue myQueue;

public void sendMessage (String payload) { Connection connection = null; try { connection = connectionFactory.createConnection(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); MessageProducer messageProducer = session.createProducer(myQueue); TextMessage textMessage = session.createTextMessage(payload); messageProducer.send(textMessage); } catch (JMSException ex) { //. . . } finally { if (connection != null) { try { connection.close(); } catch (JMSException ex) {

//. . . } } } }

Application Server Specific Resources

Boilerplate Code

Exception Handling


Sending a Message using JMS 1.1

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@Inject JMSContext context;

@Resource(lookup = "java:global/jms/demoQueue") Queue demoQueue;

public void sendMessage(String payload) { context.createProducer().send(demoQueue, payload); }

Sending a Message

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Java API for RESTful Web Services 2.0

•  Client API • Message Filters and Entity Interceptors •  Asynchronous Processing – Server and Client •  Common Configuration


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Java API for RESTful Web Services 2.0

// Get instance of Client Client client = ClientBuilder.newClient(); // Get customer name for the shipped products String name = client.target("../orders/{orderId}/customer") .resolveTemplate("orderId", "10") .queryParam("shipped", "true") .request() .get(String.class);

Client API

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Contexts and Dependency Injection 1.1

•  Automatic enablement for beans with scope annotation and EJBs – “beans.xml” is optional

•  Bean discovery mode – all: All types – annotated: Types with bean defining annotation (default) – none: Disable CDI

•  @Vetoed for programmatic disablement of classes • Global ordering/priority of interceptors and decorators


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Bean Validation 1.1

•  Alignment with Dependency Injection • Method-level validation

– Constraints on parameters and return values – Check pre-/post-conditions

•  Integration with JAX-RS

Java EE 7 Available Liberty v8.5.5.6 and WAS v9 Beta!

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Built-in

Custom

@Future public Date getAppointment() { //. . . }

public void placeOrder( @NotNull String productName, @NotNull @Max("10") Integer quantity, @Customer String customer) { //. . . }

Bean Validation 1.1

Method Parameter and Result Validation

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Java Persistence API 2.1

•  Schema Generation – javax.persistence.schema-generation.* properties

•  Unsynchronized Persistence Contexts •  Bulk update/delete using Criteria•  User-defined functions using FUNCTION •  Stored Procedure Query •  Entity Graphs


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Servlet 3.1

•  Non-blocking I/O •  Protocol Upgrade

– HttpUpgradeHandler – necessary for Web Sockets •  Security Enhancements

– <deny-uncovered-http-methods>: Deny request to HTTP methods not explicitly covered by specified constaints


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Servlet 3.1

public class TestServlet extends HttpServlet protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { ServletInputStream input = request.getInputStream(); byte[] b = new byte[1024]; int len = -1; while ((len = input.read(b)) != -1) { . . . } } }

Non-blocking I/O Traditional

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Servlet 3.1

AsyncContext context = request.startAsync(); ServletInputStream input = request.getInputStream(); input.setReadListener( new MyReadListener(input, context));

Non-blocking I/O: doGet

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Servlet 3.1

@Override public void onDataAvailable() { try { StringBuilder sb = new StringBuilder(); int len = -1; byte b[] = new byte[1024]; while (input.isReady() && (len = input.read(b)) != -1) { String data = new String(b, 0, len); System.out.println("--> " + data); } } catch (IOException ex) { . . . } } . . .

Non-blocking read

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JavaServer Faces 2.2

•  Faces Flow •  Resource Library Contracts •  HTML5 Friendly Markup Support

– Pass through attributes and elements •  Cross Site Request Forgery Protection •  Loading Facelets via ResourceHandler•  h:inputFile: New File Upload Component


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Java Transaction API 1.2

§ @Transactional: Define transaction boundaries on CDI managed beans

•  @TransactionScoped: CDI scope for bean instances scoped to the active JTA transaction

Java EE 7


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EJB 3.2

Servlet 3.1

CDI Extensions

Bea

n Va

lidat

ion

1.1

Batch 1.0

Web Fragments

Java EE 7 JSRs

JCA 1.7 JMS 2.0 JPA 2.1

Managed Beans 1.0

Concurrency 1.0 Common Annotations 1.1

Interceptors 1.2, JTA 1.2 CDI 1.1

JSF 2.2, JSP 2.3, EL 3.0

JAX-RS 2.0, JAX-WS 2.2 JSON 1.0 WebSocket

1.0

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WebSphere Application Server Java EE 7 Roadmap

Liberty features – including Java EE 7

zOS

ND

Core

Base

New in 1Q16

New in 4Q15

New in 2Q15

New in 3Q15

zosConnect-1.2 zosLocalAdapters-1.0 zosSecurity-1.0 zosTransaction-1.0 zosWlm-1.0

scalingController-1.0 scalingMember-1.0 dynamicRouting-1.0

collectiveController-1.0 clusterMember-1.0 healthManager-1.0 healthAnalyzer-1.0

Java EE 6 subset

couchdb-1.0 mongodb-2.0 wsSecurity-1.1

javaee-7.0 batchManagement-1.0

rtcomm-1.0 rtcommGateway-1.0 sipServlet-1.0 wsSecuritySaml-1.1 mediaServerControl-1.0

wsAtomicTransaction-1.2

webProfile-6.0

distributedMap-1.0

openid-2.0

openidConnectServer-1.0 openidConnectClient-1.0

osgiAppIntegration-1.0

spnego-1.0

collectiveMember-1.0 restConnector-1.0

sessionDatabase-1.0

ldapRegistry-3.0

webCache-1.0 javaMail-1.5

osgiConsole-1.0 json-1.0

timedOperations-1.0 monitor-1.0 oauth-2.0

serverStatus-1.0 wab-1.0 blueprint-1.0

webProfile-7.0

eventLogging-1.0 requestTiming-1.0

adminCenter-1.0 concurrent-1.0

bells-1.0 samlWeb-2.0

httpWhiteboard-1.0

federatedRepository-1.0 constrainedDelegation-1.0

osgiBundle-1.0 passwordUtilities-1.0 bluemixUtility-1.0

apiDiscovery-1.0 logstashCollector-1.0

scim-1.0

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Liberty features – Java EE 6 Web Profile

zOS

ND

Core

Base

New in 1Q16

New in 4Q15

New in 2Q15

New in 3Q15




Java EE 6 subset





webProfile-6.0

distributedMap-1.0

openid-2.0



spnego-1.0


sessionDatabase-1.0

ldapRegistry-3.0





webProfile-7.0




httpWhiteboard-1.0




scim-1.0

servlet-3.0 jsp-2.0 jsf-2.0 ejbLite-3.1 jdbc-4.0

jndi-1.0 appSecurity-2.0 managedBeans-1.0

ssl-1.0 beanValidation-1.0 cdi-1.0 jpa-2.0

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Liberty features – Java EE 7 Web Profile

zOS

ND

Core

Base

New in 1Q16

New in 4Q15

New in 2Q15

New in 3Q15




Java EE 6 subset





webProfile-6.0

distributedMap-1.0

openid-2.0



spnego-1.0


sessionDatabase-1.0

ldapRegistry-3.0





webProfile-7.0




httpWhiteboard-1.0




scim-1.0

servlet-3.1 jsp-2.3 jsf-2.2 ejbLite-3.2 jdbc-4.1

jndi-1.0 appSecurity-2.0 managedBeans-1.0

ssl-1.0 beanValidation-1.1 cdi-1.2 jpa-2.1 el-3.0 websocket-1.1

websocket-1.0 jsonp-1.0 jaxrs-2.0 jaxrsClient-2.0

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Liberty features – Java EE 6

zOS

ND

Core

Base

New in 1Q16

New in 4Q15

New in 2Q15

New in 3Q15




Java EE 6 subset





webProfile-6.0

distributedMap-1.0

openid-2.0



spnego-1.0


sessionDatabase-1.0

ldapRegistry-3.0





webProfile-7.0




httpWhiteboard-1.0




servlet-3.0 jsp-2.2 jsf-2.0

jdbc-4.0 jndi-1.0 appSecurity-2.0 managedBeans-1.0

ssl-1.0 beanValidation-1.0 cdi-1.0 jpa-2.0

jaxrs-1.1

jca-1.6 jms-1.1 jaxws-2.2 jaxb-2.2

wmqJmsClient-1.1 wasJmsClient-1.1

mdb-3.1

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Liberty features – Java EE 7 Full Platform

zOS

ND

Core

Base

New in 1Q16

New in 4Q15

New in 2Q15

New in 3Q15




Java EE 6 subset





webProfile-6.0

distributedMap-1.0

openid-2.0



spnego-1.0


sessionDatabase-1.0

ldapRegistry-3.0





webProfile-7.0




httpWhiteboard-1.0




servlet-3.1 jsp-2.3 jsf-2.2 ejbLite-3.2

jdbc-4.1 jndi-1.0 appSecurity-2.0 managedBeans-1.0

ssl-1.0 beanValidation-1.1 cdi-1.2 jpa-2.1 el-3.0

websocket-1.1 websocket-1.0

jsonp-1.0 jaxrs-2.0 jaxrsClient-2.0

concurrent-1.0

appClientSupport-1.0 ejbPersistentTimer-1.0

ejbHome-3.2 ejbRemote-3.2 ejb-3.2 mdb-3.2

j2eeManagement-1.1 jacc-1.5 jaspic-1.1 jca-1.7 jms-2.0

wmqJmsClient-2.0 wasJmsClient-2.0

jaxws-2.2 jaxb-2.2

batch-1.0 javaMail-1.5

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• WebSphere Application Server Liberty – v8.5.5.6 – Full Java EE 7 platform support – Available since 2Q2015 –  https://developer.ibm.com/wasdev/downloads/#asset/runtimes-8.5.5-wlp-javaee7

• WebSphere Application Server traditional – vNext – Full Java EE 7 platform support – Cloud v9 Beta:

https://console.ng.bluemix.net/catalog/services/websphere-application-server/ – On-Premise v9 Beta:

https://www-01.ibm.com/marketing/iwm/iwmdocs/web/cc/earlyprograms/websphere/wasob/index.shtml

WebSphere Support for Java EE 7

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Overview Java EE 8 Introduction

•  Java EE 8 Platform (JSR 366) – Very early in development cycle

•  Content and schedule still likely to change

– Few child specifications have early draft reviews available – Target date is 1H2017 for GA of platform specifications

Java EE 8 Introduction

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•  JCache 1.0 (JSR 107) –  Standard Cache API for Java objects –  First spec to finalize (03/2015)

•  MVC 1.0 (JSR 371) –  Model-View-Controller –  Utilize existing Java EE technologies when applicable

•  Model (cdi, bv), View (jsp, facelets), Controller (jax-rs)

•  JSON-B 1.0 (JSR 367) –  Binding complement to JSON-P in Java EE 7

•  Java EE Security 1.0 (JSR 375) –  Modernization of security-related JSRs

•  Java EE Management 1.0 (JSR 373) –  Supersede JSR 77 and utilize rest-based services (vs ejb) –  Also, provide JSR 88-like deployment services

Java EE 8 – Major New Specifications

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•  Servlet 4.0 (JSR 369) –  HTTP 2 Support –  Continued improvements to HTTP 1.1 support

•  CDI 2.0 (JSR 365) –  Java SE model (not part of JDK) –  More modular

•  JSF 2.3 (JSR 372) –  Better integration with CDI and JSON via Ajax API –  Integration with MVC 1.0

•  JSON-P 1.1 (JSR 374) –  Complementary support for JSON-B 1.0 –  Java SE 8 support

•  JAX-RS 2.1 (JSR 370) –  Server-Sent Events (SSE) –  Integration with CDI, JSON-B, MVC, etc

Java EE 8 – Major Updated Specifications

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Resources

Java EE Samples •  WASDev GitHub site

–  https://github.com/WASdev?utf8=%E2%9C%93&query=sample.javaee7 –  Java EE 7 samples with instructions on deploying to both WebSphere Liberty and WebSphere traditional v9 Beta –  The README.md file (as well as the GitHub page) have helpful configuration information –  Following technologies are currently available with complete instructions for WebSphere

•  Web Sockets 1.0/1.1

•  Concurrency 1.0

•  JTA 1.2 •  JMS 2.0

•  Servlet 3.1 •  EL 3.0

•  JSON-P 1.0

•  JAX-RS 2.0 •  Java Batch 1.0

•  WASDev Posts to help you get started –  https://developer.ibm.com/wasdev/docs/running-java-ee-7-samples-liberty-using-eclipse/ –  https://developer.ibm.com/wasdev/docs/running-the-java-ee-7-samples-on-was-liberty/

•  Official Java EE 7 GitHub site –  https://github.com/javaee-samples/javaee7-samples

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Sampling of Related Sessions… •  PEJ-5296: Java EE 7 Overview

–  Monday, 10:30am-11:30am, Mandalay Bay North, South Pacific Ballroom A

•  PEJ-2876: Configuring WebSphere Application Server for Enterprise Messaging Needs –  Monday, 12:00pm-1:00pm, Mandalay Bay North, Islander Ballroom G

•  PEJ-2139: Technical Deep Dive into IBM WebSphere Liberty –  Monday, 3:00pm-4:00pm, Mandalay Bay North, South Pacific Ballroom A

•  PEJ-1603: IBM WebSphere Liberty in the Wild –  Tuesday, 1:15pm-2:15pm, Mandalay Bay North, South Pacific Ballroom A

•  PEJ-6480: Don’t Wait! Developing Responsive Applications with Java EE 7 –  Tuesday, 1:15pm-2:15pm, Mandalay Bay North, Islander Ballroom G

•  PEJ-2151: Agile Development Using Java EE 7 with WebSphere Liberty Profile (LAB) –  Wednesday, 8:30am-9:30am, MGM Grand Room 306

•  PEJ-1973: WAS Migration: Benefits, Planning, and Best Practices –  Wednesday, 12:00pm-1:00pm, Mandalay Bay North, South Pacific Ballroom A

•  PEJ-1902: Migrate Java EE Applications to Cloud with Cloud Migration Toolkit –  Wednesday, 2:30pm-12:15pm, Mandalay Bay North, Islander Ballroom G

•  PEJ-5303: OpenJPA and EclipseLink Usage Scenarios Explained –  Thursday, 11:30am-12:15pm, Mandalay Bay North, South Pacific Ballroom A

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Questions?

Notices and Disclaimers

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Copyright © 2016 by International Business Machines Corporation (IBM). No part of this document may be reproduced or transmitted in any form without written permission from IBM.

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Information in these presentations (including information relating to products that have not yet been announced by IBM) has been reviewed for accuracy as of the date of initial publication and could include unintentional technical or typographical errors. IBM shall have no responsibility to update this information. THIS DOCUMENT IS DISTRIBUTED "AS IS" WITHOUT ANY WARRANTY, EITHER EXPRESS OR IMPLIED. IN NO EVENT SHALL IBM BE LIABLE FOR ANY DAMAGE ARISING FROM THE USE OF THIS INFORMATION, INCLUDING BUT NOT LIMITED TO, LOSS OF DATA, BUSINESS INTERRUPTION, LOSS OF PROFIT OR LOSS OF OPPORTUNITY. IBM products and services are warranted according to the terms and conditions of the agreements under which they are provided.

Any statements regarding IBM's future direction, intent or product plans are subject to change or withdrawal without notice.

Performance data contained herein was generally obtained in a controlled, isolated environments. Customer examples are presented as illustrations of how those customers have used IBM products and the results they may have achieved. Actual performance, cost, savings or other results in other operating environments may vary.

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Notices and Disclaimers Con’t.

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InterConnect 2016 Java EE 7 Overview (PEJ-5296)