as novidades do java ee 7: do html5 ao jms 2.0

Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 132

As novidades do Java EE 7:do HTML5 ao JMS 2.0Bruno BorgesOracle Product ManagerJava Evangelist

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Bruno Borges

● Oracle Product Manager / Evangelist

● Desenvolvedor, Gamer

● Entusiasta em Java Embedded e JavaFX

● Twitter: @brunoborges

Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 134Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 16

Agenda Java EE 7: quais as novidades?

Construindo aplicações HTML5– WebSockets 1.0

– JAX-RS 2.0

– JavaServer Faces 2.2

– JSON API 1.0

Mensageria com JMS 2.0

Códigos de exemplo de Java EE 7

O que vem por aí


Java EE 7: quais as novidades?

Servlet 3.1 Java API for JSON Processing 1.0 Bean Validation 1.1 Batch Applications API 1.0 Java Persistence API 2.1 Concurrency Utilities for Java EE 1.0 E muito mais... :-)


Java EE 7: quais as novidades?

Web Profile updated to include– JAX-RS

– WebSocket

– JSON-P

– EJB 3.2 Lite

Outras APIs


Construindo aplicações HTML5

WebSocket 1.0 JAX-RS 2.0 JavaServer Faces 2.2 JSON-P API


WebSockets 1.0

API para definir WebSockets, tanto Client como Server– Annotation-driven (@ServerEndpoint)

– Interface-driven (Endpoint)

– Client (@ClientEndpoint)

SPI para data frames– Negociação handshake na abertura do WebSocket

Integração com o Java EE Web container


WebSockets 1.0

import javax.websocket.*;import javax.websocket.server.*;

@ServerEndpoint(“/hello”)public class HelloBean {

@OnMessage public String sayHello(String name) { return “Hello “ + name; }}


WebSockets 1.0

@ServerEndpoint(“/chat”)public class ChatBean {

@OnOpen public void onOpen(Session peer) { peers.add(peer); }

@OnClose public void onClose(Session peer) { peers.remove(peer); }

@OnMessage public void message(String msg, Session client) { peers.forEach(p > p.getRemote().sendMessage(msg)); }}


DEMO

WebSockets


Maven Archetype para o Java EE 7

Maven Archetypes para Java EE 7– http://mojo.codehaus.org

Maven Archetype com o Embedded GlassFish configurado– http://github.com/brunoborges/javaee7-archetype

Só precisa... – $ mvn package embedded-glassfish:run


DEMO

Maven ArchetypeJava EE 7GlassFish Embedded


JAX-RS 2.0

Client API Message Filters & Entity Interceptors Asynchronous Processing – Server & Client Suporte Hypermedia Common Configuration

– Compartilhar configuração comum entre diversos serviços REST


JAX-RS 2.0 - Client

// Get instance of ClientClient client = ClientFactory.getClient();

// Get customer name for the shipped productsString name = client.target(“http://.../orders/{orderId}/customer”) .resolveTemplate(“orderId”, “10”) .queryParam(“shipped”, “true)” .request() .get(String.class);


JAX-RS 2.0 - Server

@Path("/async/longRunning")public class MyResource {

@GET public void longRunningOp(@Suspended AsyncResponse ar) { ar.setTimeoutHandler(new MyTimoutHandler()); ar.setTimeout(15, SECONDS); Executors.newSingleThreadExecutor().submit(new Runnable() { public void run() { ... ar.resume(result); }}); }

}


JavaServer Faces 2.0

Flow Faces HTML5 Friendly Markup Cross-site Request Forgery Protection Loading Facelets via ResourceHandler Componente de File Upload Multi-templating


JSON API 1.0

JsonParser– Processa JSON em modo “streaming”

– Similar ao XMLStreamReader do StaX

Como criar– Json.createParser(...)

– Json.createParserFactory().createParser(...)

Eventos do processador– START_ARRAY, END_ARRAY, START_OBJECT, END_OBJECT, ...


JSON API 1.0

"phoneNumber": [ { "type": "home", "number": ”408-123-4567” }, { "type": ”work", "number": ”408-987-6543” }]

JsonGenerator jg = Json.createGenerator(...);jg. .beginArray("phoneNumber") .beginObject() .add("type", "home") .add("number", "408-123-4567") .endObject() .beginObject() .add("type", ”work") .add("number", "408-987-6543") .endObject() .endArray();jg.close();


JMS para Mensageria


Java Message Service API 2.0

Simplificação da JMS API 1.1 sem quebrar compatibilidade Nova API requer menos objetos

– JMSContext, JMSProducer...

No Java EE, permite que JMSContext seja injetado e gerenciado pelo container, usando CDI

Objetos JMS implementam AutoCloseable Envio Async de mensagens



JMSContext Encapsula Connection e Session Criado a partir de um default ConnectionFactory

– Permite especificar um ConnectionFactory também

Unchecked exceptions Suporta encadeamento de métodos, para fluid style



@Resource(lookupName = “java:comp/defaultJMSConnectionFactory”)ConnectionFactory myJMScf;

@Resource(lookupName = “jms/inboud”)private Queue inboundQueue;

@Inject@JMSConnectionFactory(“jms/myCF”)private JMSContext context;



@JMSConnectionFactoryDefinition( name=”java:global/jms/demoCF” className = “javax.jms.ConnectionFactory”)@JMSDestinationDefinition( name = “java:global/jms/inboudQueue” className = “javax.jms.Queue” destinationName = “inboundQueue”)


Message Driven Beans para JMS 2.0

@MessageDriven(mappedName = “jms/myQueue”, activationConfig = { @ActivationConfigProperty( propertyName = “destinationLookup”, propertyValue = “jms/myQueue”), @ActivationConfigProperty( propertyName = “connectionFactoryLookup”, propertyValue = “jms/myCF”)})


Outros exemplos


Bean Validation 1.1

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

@Futurepublic Date getAppointment() { //. . .}


Batch API 1.0<job id=“myJob”> <step id=“init”> <chunk reader=“R” writer=W” processor=“P” /> <next on=“initialized” to=“process”/> <fail on=“initError”/> </step> <step id=“process”> <batchlet ref=“ProcessAndEmail”/> <end on=”success”/> <fail on=”*” exit-status=“FAILURE”/> </step></job>


GlassFish 4.0, NetBeans, e Java EE 7

Java EE 7 Expert Group Project– http://javaee-spec.java.net

GlassFish 4.0 - Java EE 7 Reference Implementation– http://www.glassfish.org

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

NetBeans e Java EE 7– http://wiki.netbeans.org/JavaEE7


GlassFish 4.0, NetBeans, e Java EE 7

JUGs participando ativamente Promovendo as JSRs

– Para a comunidade Java

– Revendo specs

– Testando betas e códigos de exemplo

– Examplos, docs, bugs

– Blogging, palestrando, reuniões de JUG


OBRIGADO!


The preceding 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.

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