Java EE 6 & GlassFish = Less Code + More Power at CEJUG
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The document discusses Java EE 6 and GlassFish, which provide developers with more power and flexibility while requiring less code. Key features of Java EE 6 like EJB 3.1, CDI, and JSF 2.0 incorporate more annotations and reduce the need for deployment descriptors. GlassFish is the open source reference implementation of Java EE 6 and offers benefits like modularity, embeddability, and support for cloud computing. Future versions of Java EE and GlassFish will focus on continued standards-based innovation.
![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
• ...
17](https://image.slidesharecdn.com/cejug-javaee6-glassfish-101205213949-phpapp02/85/Java-EE-6-GlassFish-Less-Code-More-Power-at-CEJUG-17-320.jpg)
![Java Persistence API 2 (JSR 317)
• Improved O/R mapping
• Type-safe Criteria API
• Metamodel
• 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]
25](https://image.slidesharecdn.com/cejug-javaee6-glassfish-101205213949-phpapp02/85/Java-EE-6-GlassFish-Less-Code-More-Power-at-CEJUG-25-320.jpg)
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Java EE 6 & GlassFish = Less Code + More Power at CEJUG
- 1. <Insert Picture Here> Java EE 6 & GlassFish = Less Code + More Power Arun Gupta, Java EE & GlassFish Guy blogs.sun.com/arungupta, @arungupta
- 2. The following/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. 2
- 3. 3
- 4. Compatible Java EE 5 Impl http://java.sun.com/javaee/overview/compatibility-javaee5.jsp 4
- 5. Compatible Java EE 6 Impls Today: Announced: 5
- 6. Java EE 6 Themes Flexible Embrace open source Web Profile & frameworks Pruning Lightweight Extensible Enables Drag & Drop Java EE framework installation Developer Productivity More annotations POJO development Less XML configuration 6
- 7. Java EE 6 Web Profile 1.0 • Fully functional mid-sized profile • Actively discussed in the Java EE 6 Expert Group and outside it • Technologies • Servlets 3.0, JSP 2.2, EL 2.2, Debugging Support for Other Languages 1.0, JSTL 1.2, JSF 2.0, Common Annotations 1.1, EJB 3.1 Lite, JTA 1.1, JPA 2.0, Bean Validation 1.0, Managed Beans 1.0, Interceptors 1.1, Context & Dependency Injection 1.0, Dependency Injection for Java 1.0 7
- 8. Java EE 6 - Done 09 • Specifications approved by the JCP • Reference Implementation is GlassFish v3 20 • TCK ec D 8
- 9. Java EE 6 Specifications • The Platform • Java EE 6 Web Profile 1.0 • Managed Beans 1.0 9
- 10. Java EE 6 Specifications New • Contexts and Dependency Injection for Java EE (JSR 299) • Bean Validation 1.0 (JSR 303) • Java API for RESTful Web Services (JSR 311) • Dependency Injection for Java (JSR 330) 10
- 11. Java EE 6 Specifications Extreme Makeover • Java Server Faces 2.0 (JSR 314) • Java Servlets 3.0 (JSR 315) • Java Persistence 2.0 (JSR 317) • Enterprise Java Beans 3.1 & Interceptors 1.1 (JSR 318) • Java EE Connector Architecture 1.6 (JSR 322) 11
- 12. Java EE 6 Specifications Updates • Java API for XML-based Web Services 2.2 (JSR 224) • Java API for XML Binding 2.2 (JSR 222) • Web Services Metadata MR3 (JSR 181) • JSP 2.2/EL 2.2 (JSR 245) • Web Services for Java EE 1.3 (JSR 109) • Common Annotations 1.1 (JSR 250) • Java Authorization Contract for Containers 1.3 (JSR 115) • Java Authentication Service Provider Interface for Containers 1.0 (JSR 196) 12
- 13. Java EE 6 Specifications As is • JDBC 4.0 API • Java Naming and Directory Interface 1.2 • Java Message Service 1.1 • Java Transaction API 1.1 • Java Transaction Service 1.0 • JavaMail API Specification 1.4 • JavaBeans Activation Framework 1.1 • Java API for XML Processing 1.3 • Java API for XML-based RPC 1.1 • SOAP with Attachments API for Java 1.3 • Java API for XML Registries 1.0 • Java EE Management Specification 1.1 (JSR 77) • Java EE Deployment Specification 1.2 (JSR 88) • Java Management Extensions 1.2 • Java Authentication and Authorization Service 1.0 • Debugging Support for Other Languages (JSR 45) • Standard Tag Library for JSP 1.2 (JSR 52) • Streaming API for XML 1.0 (JSR 173) 13
- 14. Java EE 6 & Ease-of-development • Continue advancements of Java EE 5 • Primary focus: Web Tier • General principles • Annotation-based programming model • Reduce or eliminate need for DD • Traditional API for advanced users 14
- 15. Servlets in Java EE 5 At least 2 files <!--Deployment descriptor /* Code in Java Class */ web.xml --> <web-app> package com.sun; <servlet> public class MyServlet extends <servlet-name>MyServlet HttpServlet { </servlet-name> public void <servlet-class> doGet(HttpServletRequest com.sun.MyServlet req,HttpServletResponse res) </servlet-class> { </servlet> ... <servlet-mapping> <servlet-name>MyServlet } </servlet-name> ... <url-pattern>/myApp/* } </url-pattern> </servlet-mapping> ... </web-app> 15
- 16. Servlets 3.0 (JSR 315) Annotations-based @WebServlet package com.sun; @WebServlet(name=”MyServlet”, urlPatterns={”/myApp/*”}) public class MyServlet extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse res) { <!--Deployment descriptor web.xml --> <web-app> ... <servlet> <servlet-name>MyServlet</servlet-name> } <servlet-class> com.sun.MyServlet </servlet-class> </servlet> <servlet-mapping> <servlet-name>MyServlet</servlet-name> <url-pattern>/myApp/*</url-pattern> </servlet-mapping> ... </web-app> http://blogs.sun.com/arungupta/entry/java_ee_6_glassfish_31 http://blogs.sun.com/arungupta/entry/screencast_31_java_ee_6 16
- 17. 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 • ... 17
- 18. EJB 3.1 (JSR 318) Package & Deploy in a WAR Java EE 5 Java EE 6 myApp.war myApp.ear WEB-INF/classes web.war com.sun.FooServlet com.sun.TickTock WEB-INF/web.xml com.sun.FooBean WEB-INF/classes com.sun.FooHelper com.sun.FooServlet com.sun.TickTock beans.jar com.sun.FooBean web.xml ? com.sun.FooHelper http://blogs.sun.com/arungupta/entry/java_ee_6_glassfish_31 http://blogs.sun.com/arungupta/entry/screencast_31_java_ee_6 18
- 19. EJB 3.1 - Sample @Stateless @EJB public class MySessionBean { MySessionBean bean; @PostConstruct public void setupResources() { // setup your resources } @PreDestroy public void cleanupResources() { // collect them back here } public String sayHello(String name) { return "Hello " + name; } } 19
- 20. EJB 3.1 • No interface view – one source file per bean • Embeddable API • @Singleton • Initialization in @PostContruct • Cron-like semantics for Timer • Asynchronous Session Bean • Portable Global JNDI Name 20
- 21. EJB 3.1 EJB 3.1 Lite – Feature Comparison 21
- 22. Contexts & Dependency Injection (JSR 299) • Standards-based Dependency Injection • Type-safe – Builds on @Inject API • Context/Scope management • Includes ELResolver @Inject @LoggedIn User user Request What ? Which one ? Injection (Type) (Qualifier) 22
- 23. CDI • Qualifiers • Events • Stereotypes • Interceptors • Decorators • Alternatives •... 23
- 24. Java Server Faces 2.0 (JSR 314) • Facelets as “templating language” • Custom components much easier to develop • Integrated Ajax (with or without JavaScript) • “faces-config.xml” optional in common cases • Default navigation rules • Much more … • Runs on Servlet 2.5+ • Bookmarkable URLs • Conditional navigation • ... 24
- 25. Java Persistence API 2 (JSR 317) • Improved O/R mapping • Type-safe Criteria API • Metamodel • 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] 25
- 26. Bean Validation (JSR 303) • Tier-independent mechanism to define constraints for data validation • Represented by annotations • javax.validation.* package • Integrated with JSF and JPA • JSF: f:validateRequired, f:validateRegexp • JPA: pre-persist, pre-update, and pre-remove • @NotNull(message=”...”), @Max, @Min, @Size • Fully Extensible • @Email String recipient; 26
- 27. JAX-RS 1.1 (JSR 311) • Java API for building RESTful Web Services • POJO based • Annotation-driven • Server-side API • HTTP-centric 27
- 28. JAX-RS 1.1 Code Sample - Simple @Path("helloworld") public class HelloWorldResource { @GET @Produces("text/plain") public String sayHello() { return "Hello World"; } @GET @Path("morning") public String morning() { return “Good Morning!”; } } 28
- 29. IDE Support for Java EE 6 29
- 30. Books on GlassFish 30
- 31. What is GlassFish ? • A community • Users, Partners, Testers, Developers, ... • Started in 2005 on java.net • Application Server • Open Source (CDDL & GPL v2) • Java EE Reference Implementation 31
- 32. GlassFish Server Chronology 2006 2007 2008 2009 2010 … GlassFish v1 Java EE 5, Single Instance GlassFish v2 Java EE 5, High Availability GlassFish Server 3 Java EE 6, Single Instance GlassFish Server 3.1 Java EE 6, High Availability 32
- 33. GlassFish Distributions Distribution License Features GlassFish Open Source CDDL & • Java EE 6 Compatibility Edition 3.0.1 GPLv2 • No Clustering • Clustering planned in 3.1 • mod_jk for load balancing GlassFish Open Source CDDL & • Java EE 5 Compatibility Edition 2.1.1 GPLv2 • In memory replication • mod_loadbalancer Oracle GlassFish Server Commercial • GlassFish Open Source Edition 3.0.1 3.0.1 • GlassFish Server Control Clustering • Clustering planned in 3.1 Coming Soon! Oracle GlassFish Server Commercial • GlassFish Open Source Edition 2.1.1 2.1.1 • Enterprise Manager • HADB
- 34. GlassFish 3 • Modular • Maven 2 – Build & Module description • Felix – OSGi runtime (200+ bundles) • Allow any type of Container to be plugged • Start Container and Services on demand • Embeddable: runs in-VM • Extensible • Rails, Grails, Django, ... • Administration, Monitoring, Logging, Deployment, ... 34
- 35. GlassFish 3.0.1 • First Oracle-branded release of GlassFish • Additional platform support • Oracle Enterprise Linux 4 & 5 (32 & 64-bit) • Red Hat Enterprise Linux 64-bit • Window 2008 R2 (32 & 64-bit) • HP-UX 11i, (32 & 64-bit) • JRockit 6 Update 17 • 100+ bugfixes http://www.oracle.com/technetwork/middleware/glassfish/overview/index.html 35
- 36. 36
- 37. Boost your productivity Retain session across deployment asadmin redeploy –properties keepSessions=true helloworld.war 37
- 39. GlassFish Server OSE 3.1 • Combine benefits from versions 2.1.1 and 3.0 • Clustering, replication and centralized admin (2.1.1) • OSGi modularity and Java EE 6 from (3.x) • Other ... • Application Versioning • Application-Scoped resources • SSH-based remote management & monitoring • Various Enterprise OSGi specs • Embedded (extensive) • Admin Console based on RESTful API http://wikis.sun.com/display/glassfish/GlassFishv3.1 39
- 40. GlassFish and WebLogic together • Best open source application server with • Best commercial application server for support from Oracle transactional Java EE applications • Open source platform of choice for light- • Platform of choice for standardization weight Web applications • Focus on lowest operational cost and mission • Focus on latest Java EE standards and critical applications community driven innovation • integration with Oracle Database, Fusion • Certified interoperability with Fusion Middleware & Fusion Applications Middleware • Differentiated innovation, scout thread Production Java Production Java Application Deployment Application Deployment GlassFish Server WebLogic Server 40
- 41. What does Java EE offer to Cloud ? ● Containers ● Injectable services ● Scale to large clusters ● Security model ● ... 41
- 42. What can Java EE do for Clouds ? ● Tighter requirements for resource and state management ● Better isolation between applications ● Potential standard APIs for NRDBMS, Caching, … ● HTML5 ● Common management and monitoring interfaces ● Better packaging ● Apps/Data are (multiple) versioned, Upgrades, Expose/Connect to services, QoS attributes, ... ● Evolution, not revolution 42
- 43. What else is coming in JavaEE.next? • Modularity • Build on Java SE work • Applications made of modules • Dependencies are explicit • Versioning is built-in • Web socket support • Standard JSON API • HTML5 support • NIO.2-based web container 43
- 44. References • glassfish.org • oracle.com/goto/glassfish • blogs.sun.com/theaquarium • glassfish.org/roadmap • youtube.com/user/GlassFishVideos • Follow @glassfish 44
- 45. <Insert Picture Here> Java EE 6 & GlassFish = Less Code + More Power Arun Gupta, Java EE & GlassFish Guy blogs.sun.com/arungupta, @arungupta