Java EE 6 workshop at Dallas Tech Fest 2011
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The document outlines the key features and capabilities of Java EE 6, which aims to provide more power to developers with less code. It discusses various Java EE 6 technologies like EJB 3.1, CDI, JPA 2.0, JSF 2.0, JAX-RS and how they simplify development. It also previews GlassFish 3.1, the reference implementation of Java EE 6 and talks about the next steps in the evolution of Java EE.
![Java Persistence API 2
â—Ź Improved O/R mapping
â—Ź Type-safe Criteria API
â—Ź Expanded and Richer JPQL
â—Ź 2nd-level Cache
â—Ź New locking modes
● PESSIMISTIC_READ – grab shared lock
● PESSIMISTIC_WRITE – grab exclusive lock
● PESSIMISTIC_FORCE_INCREMENT – update version
â—Ź Standard configuration options
â—Ź javax.persistence.jdbc.[driver | url | user | password]](https://image.slidesharecdn.com/javaee6-dallastechfest-2011-110812123636-phpapp01/85/Java-EE-6-workshop-at-Dallas-Tech-Fest-2011-15-320.jpg)
![Servlets 3.0
● @WebServlet, @WebListener, @WebFilter, …
â—Ź Asynchronous Servlets
â—Ź @WebServlet(asyncSupported=true)
â—Ź Plugin libraries using web fragments
â—Ź Dynamic registration of Servlets
â—Ź WEB-INF/lib/[*.jar]/META-INF/resources
accessible in the root
â—Ź Programmatic authentication login/logout
â—Ź Default Error Page
â—Ź ...](https://image.slidesharecdn.com/javaee6-dallastechfest-2011-110812123636-phpapp01/85/Java-EE-6-workshop-at-Dallas-Tech-Fest-2011-21-320.jpg)
Java EE 6 workshop at Dallas Tech Fest 2011
- 1. Java EE 6 = Less Code + More Power Arun Gupta, Java EE & GlassFish Guy blogs.oracle.com/arungupta, @arungupta 1
- 2. 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.
- 3. The Java EE 6 Platform Servlets 3.0 JPA 2.0 EJB 3.1 JDBC StAX Interceptors JSF 2.0 JAX-RS JNDI JavaMail 1.1 Bean EJB 3.1 Lite JAXB JMS JACC Validation1.0 JSP 2.2 CDI 1.0 JAX-WS JAXP SAAJ Managed JTA 1.1 JASPIC JAX-RPC ... Beans 1.0 Contributed by RedHat New Updated Web Profile 1.0
- 4. Light-weight ● Java EE 6 Web Profile ● Pruning ● Pruned today, means – Optional in the next release – Deleted in the subsequent releases ● Technologies marked in Javadocs – EJB 2.x Entity Beans, JAX-RPC, JAXR, JSR 88
- 5. ● EJB-in-WAR ● No-interface EJB ● Optional “web.xml”/”faces- config.xml” ● Annotation-driven ● @Schedule ● @Path ● @Inject ● ...
- 6. <web-fragment> <filter> <filter-name>wicket.helloworld</filter-name> <filter-class>org.apache.wicket.protocol.http.WicketFilter</filter-class> <init-param> <param-name>applicationClassName</param-name> <param-value>...</param-value> </init-param> </filter> <filter-mapping> <filter-name>wicket.helloworld</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-fragment>
- 8. From the real users ... Jigsaw puzzle, Modular, standard, less xml, easy, Developers can concentrate easy, have I said easy? on business logic, Java EE 6 is providing a standard for Standards compliance, vendor the infrastructure. independence, milliseconds and kilobyte deployment Faster development, less frameworks, less complexity, more great Higher integrated specs, code shipped simple and annotation driven, single-classloader WARs, next level of industry standard Definite excuse to avoid Spring forever Simplified Java Not your fat grandfather's Development, Focus on enterprise Java anymore, building great products enterprise Java renaissance http://blogs.oracle.com/arungupta/tags/community+feedback
- 9. Compatible Java EE 6 Impls Today: Web Profile Only Announced:
- 10. 3.1 Overview â—Ź Built on GlassFish 3 â—Ź Modular and Extensible HK2 Kernel â—Ź ~260+ modules â—Ź OSGi/Java EE Hybrid Apps â—Ź Clustering and High Availability â—Ź HTTP, EJB, IIOP, SSO, Metro â—Ź Containers start on demand â—Ź End-to-end extensibility
- 11. Sample App Overview CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 12. What will we do ? 1. Generate JPA Entities from the database table 2. Refactor generated entities for a more intuitive O/R mapping 3. Create an EJB for querying the database 4. Create a Servlet for testing the EJB and displaying values from the database table 5. Enable CDI and make the EJB EL-injectable 6. Display the values in JSF2/Facelets-based view 7. Expose JPA entities as a RESTful resource by using JAX-RS
- 13. What will we use ?
- 14. Generate JPA Entities And customize them CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 15. Java Persistence API 2 ● Improved O/R mapping ● Type-safe Criteria API ● Expanded and Richer JPQL ● 2nd-level Cache ● New locking modes ● PESSIMISTIC_READ – grab shared lock ● PESSIMISTIC_WRITE – grab exclusive lock ● PESSIMISTIC_FORCE_INCREMENT – update version ● Standard configuration options ● javax.persistence.jdbc.[driver | url | user | password]
- 16. Create an EJB For querying the database CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 17. Create an EJB – Sample Code For querying the database @PersistenceContext EntityManager em; public List<Customer> getCustomers() { return (List<Customer>)em.createNamedQuery("Customer.findAll").getResultList(); }
- 18. EJB 3.1 ● Simplified Packaging ● No interface view – one source file per bean ● Embeddable API ● @Singleton ● Initialization in @PostContruct ● Simplified Cron-like syntax for Timer ● Asynchronous Session Bean ● Portable Global JNDI Name
- 19. Create a Servlet For testing EJB and display values from the database CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 20. Create a Servlet – Sample Code For testing EJB and display values from the database @EJB CustomerSessionBean ejb; out.println(ejb.getCustomers()); http://localhost:8080/JavaEE6SampleApp/TestServlet
- 21. Servlets 3.0 ● @WebServlet, @WebListener, @WebFilter, … ● Asynchronous Servlets ● @WebServlet(asyncSupported=true) ● Plugin libraries using web fragments ● Dynamic registration of Servlets ● WEB-INF/lib/[*.jar]/META-INF/resources accessible in the root ● Programmatic authentication login/logout ● Default Error Page ● ...
- 22. Enable CDI Make the EJB EL-injectable CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 23. Enable CDI – Sample Code Make the EJB EL-injectable @javax.inject.Named
- 24. Contexts & Dependency Injection ● Standards-based Dependency Injection ● Type-safe – Buids on @Inject API ● Context/Scope management ● Strong Typing, Loose Coupling ● Includes ELResolver @Inject @LoggedIn User user Request What ? Injection Which one ? (Qualifier) (Type)
- 25. CDI â—Ź Qualifiers â—Ź Events â—Ź Stereotypes â—Ź Interceptors â—Ź Decorators â—Ź Alternatives â—Ź ...
- 26. Display the values In JSF2/Facelets-based view CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 27. Display the values – Sample Code In JSF2/Facelets-based view http://localhost:8080/JavaEE6SampleApp/faces/index.xhtml <h1>Java EE 6 Sample App</h1> <center>Powered by GlassFish!</center> <h:dataTable value="#{customerSessionBean.customers}" var="c"> <h:column>#{c.name}</h:column> <h:column>#{c.customerId}</h:column> </h:dataTable>
- 28. Java Server Faces 2.0 ● Facelets as “templating language” for the page ● Custom components much easier to develop ● Integrated Ajax ● “faces-config.xml” optional in common cases ● Default navigation rules ● Much more … ● Runs on Servlet 2.5+ ● Bookmarkable URLs ● Conditional navigation ● ...
- 29. RESTful resource Using JAX-RS CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 30. RESTful resource – Sample Code Using JAX-RS @Path("/customers") @GET @Path("/customer/{id}") @Produces("application/xml") public Customer getCustomer(@PathParam("id")Integer id) { return (Customer)em.createNamedQuery("Customer.findByCustomerId"). setParameter("customerId", id).getSingleResult(); } http://localhost:8080/JavaEE6SampleApp/resources/customers/customer/1 @Produces({"application/xml", "application/json"})
- 31. JAX-RS 1.1 â—Ź Java API for building RESTful Web Services â—Ź POJO based â—Ź Annotation-driven â—Ź Server-side API â—Ź HTTP-centric
- 32. Sample App Review CLI JPA Servlet EJB Database CDI JAX-RS JSF
- 33. Java EE for the Cloud : JSR 342 â—Ź More easily operate on private/public clouds â—Ź Multi-tenancy â—Ź Elasticity â—Ź Service Provisioning â—Ź Tighter requirements for resource/state management â—Ź Better isolation between applications â—Ź Potential standard APIs for NRDBMS, Caching, other â—Ź Common management and monitoring interfaces â—Ź Better packaging â—Ź Evolution, not revolution
- 34. Java EE 7 : Technology Refresh â—Ź Ease-of-development: JMS 2.0 â—Ź Latest web standards â—Ź New JSRs: Web Sockets, Java JSON API â—Ź HTTP Client API (JAX-RS 2.0) â—Ź Possible JSRs inclusion â—Ź Concurrency Utilities for Java EE (JSR 236) â—Ź JCache (JSR 107)
- 35. Java EE 7 – When ? ● Late 2012 ● Date-driven release ● Anything not ready will be deferred to Java EE 8 ● Participate ● Expert Groups forming ● Public discussion lists ● JCP membership free for individuals
- 36. Transparency Checklist http://jcp.org/en/resources/transparency NEW â—Ź EG members names â—Ź EG business reported on a publicly readable alias â—Ź Schedule is public, current and updated regularly â—Ź Public can read/write to a wiki â—Ź Discussion board on jcp.org â—Ź Public read-only issue tracker
- 37. â—Ź Find out what's new with Java technology â—Ź See new tools and techniques â—Ź Learn how to create solutions â—Ź Network with peers â—Ź Meet with experts â—Ź Influence the future of the Java platform â—Ź 400+ sessions/BoFs/HOLs â—Ź ... oracle.com/javaone
- 38. References â—Ź oracle.com/javaee â—Ź glassfish.org â—Ź oracle.com/goto/glassfish â—Ź blogs.oracle.com/theaquarium â—Ź youtube.com/GlassFishVideos â—Ź Follow @glassfish
- 39. Java EE 6 = Less Code + More Power Arun Gupta, Java EE & GlassFish Guy blogs.oracle.com/arungupta, @arungupta 39