JBoss AS7 OSDC 2011
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JBoss Application Server 7 includes several key features: 1. It is a lightweight Java EE 6 compliant container that provides fast startup times of less than 3 seconds. 2. It simplifies classloading and configuration for easier management and deployment. 3. It supports the use of managed beans, dependency injection and common services as specified by the CDI specification.
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JBoss AS7 OSDC 2011
- 1. JBoss Application Server (AS) 7 Jason Shepherd Middleware Support Engineer, Red Hat November 17 th , 2011
- 2. Introducing JBoss AS 7 Application Server Key features Java Enterprise Edition (JEE) 6 EJB 3.1
- 4. Context and Dependency Injection Integration Testing with Arquallian demo
- 5. Community vs Enterprise Releases JBoss AS 7.0.2 current EE 6 Web Profile JBoss AS 7.1 EE 6 Full Certification EAP 6 due in early 2012
- 6. JBoss EAP 6 based on AS 7.1
- 7. Key features – Lightweight Container Fast startup, < 3 sec Lazy loading of services Simplified Classloading Deploys isolated from container User focused configuration A single configuration file Manage multiple instances at once Domain mode Smaller memory footprint Cloud readiness
- 8. Fast Startup Services are started on demand CDI beans.xml triggers CDI service (Weld) No need to Slim unused features
- 9. Simplified Classloading Java EE service dependencies only /WEB-INF/beans.xml exposes org.jboss.weld.core
- 10. Greeter cannot access org.slf4j com.redhat.greeter org.slf4j org.jboss.weld.core
- 11. Benefits of Java EE? Standard platform comprised of managed components & services Write business logic as components Less code
- 13. Powerful mechanisms for free
- 15. Drawbacks of Java EE 5 @Local and @Remote interfaces
- 16. Non Embeddable EJB container
- 20. EJB 3.1 to the rescue! No more @Local and @Remote
- 22. EJBs in WAR
- 24. EJB in light weight Web Profile
- 25. EE 6 Web profile– Key components Managed Beans (JSR-330) Google and SpringSource submitted JSR-330 with the aim of standardising "a proven, non-controversial set of annotations that make injectable classes portable across frameworks" Context and Dependency Injection (CDI) Implemented with WELD on AS 7 EJB 3.1 No Local and Remote Interfaces
- 26. EJBs in WAR archives!
- 27. What are managed beans? Everyone throwing around this term “bean” JSF
- 28. EJB
- 29. Seam
- 30. Spring
- 31. Guice
- 32. CDI Need a “unified bean definition”
- 33. Managed bean specification Common bean definition
- 34. Instances managed by the container
- 35. Common services Lifecycle callbacks
- 37. Interceptors Foundation spec How managed beans evolved: http://www.infoq.com/news/2009/11/weld10 JSF EJB CDI JAX-RS Managed Beans
- 38. Resource Injection Revisited in JEE 6 Weakest aspect of JEE 5
- 39. Closed set of injectable resources @EJB
- 40. @PersistenceContext , @PersistenceUnit
- 41. @Resource (e.g., DataSource, UserTransaction) Name-based injection is fragile Not “refactor friendly”
- 42. Requires special tooling to validate
- 43. Context and Dependency Injection (CDI) Web tier (JSF) Transactional tier (EJB)
- 44. What CDI provides Services for Java EE components Lifecycle management of stateful beans bound to well-defined c ontexts (including conversation context)
- 45. Automatic transaction management for web apps!
- 46. A type-safe approach to d ependency i njection
- 47. Based on Seam 2
- 48. Other features …
- 50. Injection 101 ... public class ManagedGreeter { @Inject Greeter g ; String message = null; public void setMessage(String m ) { this . message = g .greet( m ); } public String getMessage(){ return message ; } }
- 51. Welcome to CDI, EJB 3.1 session beans! @Stateless public class Greeter { public String greet(String name) { return "Hello " + name + "!" ; } }
- 52. Welcome to CDI, JSF! Use the bean directly in the JSF view <h:outputText value = "#{managedGreeter.message}" />
- 53. From JEE 5 to JEE6 CDI JSF managed beans Facelets JSP
- 54. Stashing the bean in a context @RequestScoped public class ManagedGreeter { @Inject Greeter g ; String message = null; public void setMessage(String m ) { this . message = g .greet( m ); } public String getMessage(){ return message ; } }
- 55. Scope types and contexts Absence of sc ope - @Dependent Bound to lifecycle of bean holding reference Servlet scopes @ApplicationScoped
- 56. @RequestScoped
- 57. @SessionScoped JSF conversation scope - @ConversationScoped
- 58. Custom scopes Define scope type annot ation (e.g., @FlashScoped )
- 59. Implement the context API in an extension
- 60. Conversation context Request ≤ Conversation ≪ Session Boundaries demarcated by application Optimistic transaction Conversation-scoped persistence context
- 61. No fear of exceptions on lazy fetch operations
- 62. Controlling the conversation @ConversationScoped public class BookingAgent { @Inject @BookingDatabase EntityManager em ; @Inject Conversation conversation ; private Hotel selected ; private Booking booking ; public void select(Hotel h) { selected = em .find(Hotel. class , h.getId()); conversation.begin() ; } ...
- 63. Controlling the conversation ... public boolean confirm() { if (!isValid()) { return false ; } em .persist( booking ); conversation.end() ; return true ; } }
- 64. Container-oriented testing for Java EE ShrinkWrap Fluent API for creating Java archives JavaArchive archive = ShrinkWrap. create ( "archive.jar" , JavaArchive. class ) .addClasses(MyClass. class , MyOtherClass. class ) .addResource( "mystuff.properties" ); Arquillian Integration test harness
- 65. Pluggable container support (embedded or remote)
- 66. Supports injection into test class
- 67. Tests can be run from IDE or build script
- 68. Arquillian Maven integration < dependency > < groupId > org.jboss.arquillian.junit </ groupId > < artifactId > arquillian - junit -container </ artifactId > < version > ${arquillian.version} </ version > < scope > test </ scope > </ dependency >
- 69. Arquillian Remote vs. Embedded Remote Run on a remote server (localhost or other)
- 71. Deployed to running container Managed Runs within the JVM
- 72. Startup/Shutdown managed by test harness
- 73. How do I get started? Download JBoss AS 7 and Quickstarts http://jboss.org/jbossas Generate a project using Eclipse & JBoss Tools https://www.jboss.org/tools/ View the JBoss Quickstart documentation https://docs.jboss.org/author/display/ Read the Weld reference guide http://tinyurl.com/weld-reference-101 Browse the CDI JavaDoc http://docs.jboss.org/cdi/api/latest/
- 74. What is Openshift? Express Free shared-hosting
- 75. Java, Perl, PHP, Python, and Ruby Flex Platform-as-a-Service Auto-scaling
- 77. Application Management Java and PHP
- 78. Openshift Express Register with an email only
- 79. Install the RHC command line tools
- 80. Create a domain app-domain.redhat.com Create an application rhc-create-app Copy app into git managed directory
- 81. Git push
- 82. Try JBoss AS 7 today! Lighting fast performance
- 83. Java EE 6 compliant
- 84. Test in the container using Arquallian
- 85. Deploy instantly to Openshift