java ee 6 & glassfish v3 at vancouver jug, jan 26, 2010
DESCRIPTION
Java EE 6 & GlassFish v3 at Vancouver JUG, Jan 26, 2010TRANSCRIPT
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Java EE 6 &GlassFish v3Paving the path for future
Arun Gupta, GlassFish Guyblogs.sun.com/arungupta, @arungupta
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#glassfish#vanjug
Are you tweeting ?
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JPEProject
J2EE 1.2Servlet, JSP,
EJB, JMSRMI/IIOP
J2EE 1.3CMP,
ConnectorArchitecture
J2EE 1.4Web Services, Management, Deployment, Async. Connector
Java EE 5Ease of DevelopmentAnnotationsEJB 3.0Persistence APINew and Updated Web Services
Robustness
Web Services
Enterprise Java
Platform
`
Java EE 6PruningExtensibilityProfilesEase-of-devEJB LiteRESTful WSCDI
Java EE 6Web Profile
Ease ofDevelopment
FlexibleJava EE: Past & Present
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Compatible Java EE 5 Implementations
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Compatible Java EE 6 Implementations
Today:
Coming:
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Goals for the Java EE 6 Platform
• Flexible & Light-weight• Extensible
– Embrace Open Source Frameworks
• Easier to use, develop on– Continue on path set by Java EE 5
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Java EE 6 is Flexible• Decouple specifications to allow more combinations• Expands potential licensee ecosystem• Profiles
> Targeted bundle of technologies> Defined through the JCP> Web Profile Defined
– Defined by the Java EE 6 Expert Group
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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
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Java EE 6 is Lightweight
• Pruning> Make some technologies optional
• Pruned today, means> Optional in the next release> Deleted in the subsequent releases
• Pruned technologies will be marked in Javadocs• Technologies
> JAX-RPC, EJB 2.x Entity Beans, JAXR, JSR 88
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Java EE 6 is Extensible
• Embrace open source frameworks> Wicket, Lift, Spring, Struts, ...
• Zero-configuration, drag-and-drop for web frameworks> Servlets, servlet filters, context listeners for a framework
get discovered and registered automatically• Plugin libraries using web fragments
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<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>
http://blogs.sun.com/arungupta/entry/totd_91_applying_java_ee
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<web-fragment> <filter> <filter-name>LiftFilter</filter-name> <display-name>Lift Filter</display-name> <description>The Filter that intercepts lift calls</description> <filter-class>net.liftweb.http.LiftFilter</filter-class> </filter> <filter-mapping> <filter-name>LiftFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping></web-fragment>
http://blogs.sun.com/arungupta/entry/totd_101_applying_servlet_3
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Java EE 6 - Done
• Specifications approved by the JCP• Reference Implementation is GlassFish v3• TCK
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Java EE 6 Specifications
• The Platform• Java EE 6 Web Profile 1.0• Managed Beans 1.0
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Java EE 6 SpecificationsNew
• Context 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)
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Java EE 6 SpecificationsExtreme 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)
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Java EE 6 SpecificationsUpdates
• 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)
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Java EE 6 SpecificationsAs is
• JDBC 3.0 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)
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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
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EoD: ServletsServlet in Java EE 5: Two Files<!--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>
/* Code in Java Class */
package com.sun;public class MyServlet extends HttpServlet {public void doGet(HttpServletRequest req,HttpServletResponse res)
{
...
}
...
}
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EoD: Servlets in Java EE 6
package com.sun;@WebServlet(name=”MyServlet”, urlPattern=”/myApp/*”)public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
{...
}
http://blogs.sun.com/arungupta/entry/totd_81_getting_started_with
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Servlet 3.0
• Annotations to declare Servlets, Filters, Init param, ...> “web.xml” is optional in most of the cases
• Pluggable frameworks using web fragments• Async support• Programmatic authentication and logout• Default error page, File upload support • Using new language features – for example Generics
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EJB 3.1• @Singleton beans – shared state per server VM• No interface view – one source file per bean• Calendar timers – cron like semantics
> @Schedule(dayOfWeek=”Mon,Wed”)> (hour=”14”, dayOfMonth=”Last Thu”, month=”Nov”)> (minute=”*/5”, hour=”*”)
• Application startup/shutdown callbacks• EJB “Lite”
> Small subset of EJB 3.1 for use in Web profile
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EoD: EJB Simplified Packaging
foo.earfoo_web.war
WEB-INF/web.xmlWEB-INF/classes com.sun.FooServlet com.sun.TickTock
foo_ejb.jarcom.sun.FooBeancom.sun.FooHelper
foo.warWEB-INF/classes com.sun.FooServlet com.sun.TickTock com.sun.FooBean com.sun.FooHelper
web.xml ?
Java EE 5 Java EE 6
http://blogs.sun.com/arungupta/entry/totd_95_ejb_3_1
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Java Server Faces 2.0
• Facelets as “templating language” for the page> Custom components much easier to develop
• Ajax support integrated• “faces-config.xml” not required in common cases• Mojarra is the Reference Implementation of JSF 2
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Java Persistence API 2.0
• Expanded object/relational mapping functionality> @ElementCollection, @OrderColumn, ...
• Additions to the Java Persistence query language> INDEX, CASE/WHEN/ELSE
• Metamodel API (javax.persistence.metamodel)
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JPA 2.0
• Type-safe Criteria API> CriteriaQuery – select, where> QueryBuilder – expressions, predicates
• Standard caching configuration> 2nd level caching> @Cache on entities
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Bean Validation (JSR 303)
• Tier-independent mechanism to define constraints for data validation> Represented by annotations> javax.validation
• 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;
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Contexts & Dependency Injection for Java EE (JSR 299)
• Type-safe Dependency Injection> Builds on @Inject API
• Context/scope management• Works with multiple bean types• Includes ELResolver
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CDI Clients
• Injection Points> Field, Method, Constructor> 0 or more qualifiers> Type
@Inject @LoggedIn User user
RequestInjection
What ?(Type)
Which one ?(Qualifier)
@Inject @LoggedIn User user
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CDI Basics
• Separate from @Resource but can co-exist> @Resource for container managed DI> @Inject for application managed DI
• Strong typing, loose coupling> Clients only declare dependencies via injection
points> Bean selection is done by CDI
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CDI – Sample Client CodeField and Method Injection
public class CheckoutHandler {
@Inject @LoggedIn User user;
@Inject PaymentProcessor processor;
@Inject void setShoppingCart(@Default Cart cart) { … }
}
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CDI – Sample Client CodeConstructor Injection
public class CheckoutHandler {
@Inject CheckoutHandler(@LoggedIn User user, PaymentProcessor processor, @Default Cart cart) { ... }
}
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CDI - Sample Client CodeMultiple Qualifiers and Qualifiers with Arguments
public class CheckoutHandler {
@Inject CheckoutHandler(@LoggedIn User user, @Reliable @PayBy(CREDIT_CARD) PaymentProcessor processor, @Default Cart cart) { ... }
}
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CDI - Declaring QualifiersWith a meta-annotation
• Write your own annotation types and annotate them with @Qualifier
• For example: @Qualifier @Retention(RUNTIME) @Target({FIELD,TYPE}) public @interface Red {}
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CDI - How to configure ?There is none!
• CDI discovers bean in all modules in which CDI is enabled
• Beans are automatically selected for injection• Possible to enable groups of bean selectively via a
descriptor
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CDI - Scopes
• Beans can be declared in a scope> Everywhere: @ApplicationScoped, @RequestScoped> Web app: @SessionScoped> JSF app: @ConversarionScoped> Pseudo-scope (default): @Dependent
• The CDI runtime will make sure the right bean is created at the right time
• Client do NOT have to be scope-aware
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CDI - Named BeansBuilt-in support for the Unified EL
• Beans give themselves a name with @Named(“cart”)• Then refer to it from a JSF or JSP page using the EL:
<h:commandButton value=”Checkout” action=“#{cart.checkout}”/>
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CDI - EventsEven more decoupling
• Annotation-based event model• A bean @Observes an event
void onLogin(@Observes LoginEvent event) { … }• Another bean fires an event using the Event.fire(T event)
method
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CDI - Much more ...
• Producer methods and fields• Bridging Java EE resources• Alternatives• Interceptors• Decorators• Sterotypes
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IDE Support
• NetBeans 6.8• Eclipse 3.4+• IntelliJ 9.0
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Java EE 6 Training & Certification• Java EE6 Training Curriculum - Feb 2010• Java EE6 Certifications available - Mar 2010• Register your interest in the courses and certifications
and receive information about promotions> https://dct.sun.com/dct/forms/reg_us_1611_480_0.jsp
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What is GlassFish ?
• A community> Users, Partners, Testers, Developers, ...> Started in 2005 on java.net
• Application Server> Enterprise Quality and Open Source (CDDL & GPL v2)> Java EE Reference Implementation> Full Commercial Support from Sun
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Sun GlassFish Enterprise Server
GlassFishGlassFishOpen SourceOpen SourceApplication ServerApplication Server
Customer FocusedCustomer FocusedSupport TeamSupport Team
Patches &Patches &UpgradesUpgrades
24x7 Support24x7 Support
CustomerCustomerAdvocateAdvocate
Sun VIPSun VIPInteroperabilityInteroperabilitySupportSupport
Enterprise ManagerEnterprise Manager
eLearningeLearningCreditCredit
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GlassFish v3
• Modular:> Maven 2 – Build & Module description> Felix – OSGi runtime (216 bundles)> Allow any type of Container to be plugged
– Start Container and Services on demand
• Embeddable: runs in-VM• Extensible
> Rails, Grails, Django, ...
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Dynamic Languages & Frameworks
http://glassfish-scripting.dev.java.net
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Rails Deployment Choices
Credits: http://birdwatchersdigest.com
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DemoNetBeans / Eclipse & Java EE 6
http://blogs.sun.com/arungupta/entry/screencast_27_simple_web_applicationhttp://blogs.sun.com/arungupta/entry/screencast_28_simple_web_applicationhttp://blogs.sun.com/arungupta/entry/screencast_26_develop_run_debug/http://blogs.sun.com/arungupta/entry/totd_93_getting_started_with/http://blogs.sun.com/arungupta/entry/totd_94_a_simple_javahttp://blogs.sun.com/arungupta/entry/totd_95_ejb_3_1http://blogs.sun.com/arungupta/entry/totd_102_java_ee_6http://blogs.sun.com/arungupta/entry/totd_99_creating_a_javahttp://blog.arungupta.me/2008/11/screencast-28-simple-web-application-using-eclipse-and-glassfish-v3-prelude/
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Embeddable GlassFish Server.Builder builder = new Server.Builder("testBuilder");
// Get the builder for EmbeddedFileSystem EmbeddedFileSystem.Builder efsb = new EmbeddedFileSystem.Builder(); EmbeddedFileSystem efs = efsb.build(); builder.embeddedFileSystem(efs);
// Start the embedded server (should take no more than a few of seconds) server = builder.build();
// Add a WEB container (other containers: ejb, jps, all, ...) ContainerBuilder containerBuilder = server.createConfig(ContainerBuilder.Type.web); server.addContainer(containerBuilder); containerBuilder.create(server); server.createPort(port);
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Embeddable GlassFish // Setup machinery to deploy deployer = server.getDeployer(); // type is EmbeddedDeployer DeployCommandParameters deployParams = new DeployCommandParameters(); deployParams.name = "myApplication"; // needed for undeploy deployParams.contextroot = context; // overrides whatever the WAR contains
// Creates default virtual server, web listener, does the deploy and // returns the applicationName as a String (null means something went wrong) // duration depends on application size and nature. Heavy lifting done here. File archive = new File(archiveName); applicationName = deployer.deploy(archive, deployParams); return (applicationName == null) ? false : true;
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CLI-based Administration
● “asadmin” CLI utility● Administrative commands can be added with each container :
@Service(name=”myCommand”)public class ChangeRandomCtr implements AdminCommand {
@ParamString s1;@ParamString s2;
… }● Available as :
asadmin myCommand –s1 foo –s2 bar
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DemoGlassFish v3 Administration
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Light Weight & On-demand Monitoring
• Event-driven light-weight and non-intrusive monitoring• Modules provide domain specific probes (monitoring
events)> EJB, Web, Connector, JPA, Jersey, Orb, Ruby
• End-to-end monitoring on Solaris using DTrace• 3rd party scripting clients
> JavaScript to begin with
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DemoGlassFish v3 Monitoring
http://blogs.sun.com/arungupta/entry/totd_104_glassfish_v3_monitoring
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REST Interface
●REST interface to management and monitoring data● Configuration data, Commands invocation (start/stop instance, deploy,
undeploy, ...), CRUD resources (JMS, JDBC, ...)● localhost:4848/management/domain● localhost:4848/monitoring/domain
●GET, POST, DELETE methods●XML, JSON, HTML reps
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DemoGlassFish v3 REST Interface
http://blogs.sun.com/arungupta/entry/totd_113_javafx_front_endhttp://blogs.sun.com/arungupta/entry/totd_116_glassfish_v3_administration
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GlassFish Partners
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References
• glassfish.org• sun.com/glassfish• blogs.sun.com/theaquarium• twitter.com/glassfish• [email protected]
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Java EE 6 &GlassFish v3Paving the path for future
Arun Gupta, GlassFish Guyblogs.sun.com/arungupta, @arungupta
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