Presentation given at JavaOne Tokyo 2012 about the innovations in Java EE 6, JBoss Forge, Arquillian.

1. RAPID JAVA Using
APPLICATION JBoss Forge,
Arquillian &
Java EE 6
DEVELOPMENT
Ray Ploski
Director, Developer Programs & Strategy
JBoss, by Red Hat, Inc.

2. DEVELOPER PRODUCTIVITY
- WHAT IF?
Faster Start-Up Times
80% Less Configuration
?
50% Less Code
Open eco-system
25% Less Classes
Vendor Agnostic
Rapid Application Tooling
Easier Integration Testing
* Based on a Sample POJO/JPA/REST Based Application

3. GREAT !!!

4. J2EE
#fail
#fail
EJB
#fail

5. PURPOSE OF THIS TALK
¡ Demonstrate productivity gains
§ Less Code, Classes and Configuration
¡ Address Concerns
§ About Java EE, EJBs, App Servers & Lock-in
¡ Introduce new innovations
§ JBoss Forge
§ CDI and Apache DeltaSpike
§ Arquillian

6. J2EE 1.4

7. EJB 2.X SESSION BEAN

8. EJB 2.X DEPLOYMENT DESCRIPTOR
<!-- … à!
<enterprise-beans>!
<session>!
<display-name>BankSB</display-name>!
<ejb-name>BankBean</ejb-name>!
<local-home>com.advocacy.legacy.ejb.BankLocalHome</local-home>!
<local>com.advocacy.legacy.ejb.BankLocal</local>!
<ejb-class>com.advocacy.legacy.ejb.BankBean</ejb-class>!
<session-type>Stateless</session-type>!
<transaction-type>Container</transaction-type>!
</session>!
</enterprise-beans>!
<assembly-descriptor>!
<container-transaction>!
<method>!
<ejb-name>BankSB</ejb-name>!
<method-name>*</method-name>!
</container-transaction>!
</assembly-descriptor>!

9. EJB 2.X CLIENT VIEW
try {!
!
Context ctx = new InitialContext();!
BankLocalHome home = (BankLocalHome)
!ctx.lookup(“java:comp/env/ejb/bank”);!
BankLocal bank = home.create();!
bank.deposit(2500.00, new Account(12345)); !
} catch (Exception ex) {!
!
// …!
}!

10. J2EE
#fail
#fail
EJB
#fail

11. DEVELOPER PRODUCTIVITY
WHAT IF?
Faster Start-Up Times
80% Less Configuration
?
50% Less Code
Open eco-system
25% Less Classes
Vendor Agnostic
Rapid Application Tooling
Easier Integration Testing
* Based on a Sample POJO/JPA/REST Based Application

12. JAVA EE 5
¡ R esource injection in JEE5
§ @EJB, @Resource, @PersistenceContext,
§ @PersistenceUnit
¡ I nto Container Components:
§ Servlets, JSF backing beans and other EJBs
¡ P rogress but still Problems
§ No POJOs
§ Cannot inject DAOs or helper classes that were not written as
EJBs
§ Hard to integrate anything but strictly business components

13. Java EE 6

14. EJB 3.1 SESSION BEAN
OPTIONAL!

15. JAVA EE 6 DEPLOYMENT DESCRIPTOR

16. EJB 3.1 CLIENT VIEW
@EJB BankLocal bank;!
!
public void makeDeposit() !
{!
bank.deposit(2500.00, new Account(12345));!
}!

17. HOW DID THEY DO THAT?
¡ C onfiguration by exception with sensible
defaults
§ Security permissions defaults to UNCHECKED
§ Transaction type defaults to CONTAINER
§ Transaction attribute defaults to REQUIRED
¡ U se Annotations
§ To choose explicitly (recommended)
§ To override defaults
¡ D eployment descriptor is no longer required
§ But can override above configurations

18. EASE-OF-USE IMPROVEMENTS
¡ Optional Local Interface
¡ Simplified Packaging
¡ EJB-Lite
¡ Portable JNDI Naming
¡ Simple Component Testing

21. Loose Coupling
STRONG TYPING

22. DEPENDENCY INJECTION
IN TWO PARTS
DI (@Inject) CDI
JSR 330 JSR 299
javax.inject! javax.enterprise.context!
!
Alternatives!
@Inject! Producers!
@Named!
Scopes!
@Singleton!
Stereotypes!
@Qualifier!
Decorators!
@Scope!
Extensions!

23. INJECTION 101
public class StatusUpdater {!
!
@Inject!
private UrlShortener shortener;!
!
public void post (String username, String status) {!
!String sStatus = shortener.shortenUrls(status);!
!System.out.println(username + “ said “ + sStatus);!
}!
!
}!
!

24. WHAT MAKES CDI UNIQUE?
STANDARD
TYPE SAFE
EXTENSIBLE

25. QUALIFIED INJECTION OF
RESOURCES
@Path(“/items”) @ManagedBean! Strong Typing
public class ItemRestService {! No Strings
!
@Inject @NumberOfDigits(Digits.EIGHT)!
private NumberGenerator numberGenerator;!
…!
}!
!
!
@WebServlet(urlPatterns = “/itemServlet”)!
public class ItemServlet extends HttpServlet {!
!
@Inject @NumberOfDigits(Digits.THIRTEEN)!
private NumberGenerator numberGenerator;!
…! Loose Coupling
}! No Reference to Implementation

26. DEFINING THE QUALIFIER
!
@Qualifier!
@Retention(RUNTIME)!
@Target({FIELD, TYPE, METHOD, PARAMETER})!
public @interface NumberOfDigits {!
!
!Digits value();!
!
}!
!
public enum Digits {!
!TWO, EIGHT, TEN, THIRTEEN!
!
}!
!

27. DEFINING THE BEANS
@NumberOfDigits(Digits.EIGHT)!
public class IssnGenerator implements NumberGenerator {!
!
public String generateNumber() {!
return “8-” + nextNumber();!
}!
!
// …!
}!
!
@NumberOfDigits(Digits.THIRTEEN)!
public class IsbnGenerator implements NumberGenerator {!
!
public String generateNumber() {!
return “13-84356-” + nextNumber();!
}!
!
// …!
}!

29. CDI - EXTENSIBLE BY DESIGN
¡ M any community projects of extensions:
§ Seam 3, CODI, Cambridge Technology Partners
¡ These multiple projects merging to deliver a
vendor-neutral open ecosystem for extensions
named DeltaSpike .
¡ Hosted on Apache. Works on all Java EE 6
servers
+ + CDISource DeltaSpike

30. Servlet Container vs. Java EE6
(After lots of
tweaking)

31. DEVELOPER PRODUCTIVIT Y
- WHAT IF?
Faster Start-Up Times
80% Less Configuration
?
50% Less Code
Open eco-system
25% Less Classes
Vendor Agnostic
Rapid Application Tooling
Easier Integration Testing
* Based on a Sample POJO/JPA/REST Based Application

32. ISN’T JAVA EE TOO SLOW & FAT?
¡ Startup Times w/ an Application
Deployed
§ JBoss AS 7.10 ~ 2 seconds
§ GlassFish v3 ~ 4 seconds
§ Tomcat 6 + Spring ~ 4 seconds
§ Java EE 6 War File < 100kb

41. MEMORY COMPARISON

42. JAVA EE 5

43. JAVA EE 6

46. JAVA EE 6 SPECIFICATION
No Where in the
Specification does it
mention that
App Servers must be slow
and complex.

47. DEVELOPER PRODUCTIVIT Y
- WHAT IF?
80% Less Configuration
Faster Start-Up Times
?
Open eco-system
50% Less Code
25% Less Classes
Vendor Agnostic
Rapid Application Tooling
Easier Integration Testing
* Based on a Sample POJO/JPA/REST Based Application

48. Start up Costs
Gotchas
Integration Details

49. I need one of
those widgets for
a marketing
T YPICAL DEVELOPER
meeting in an
hour.
NIGHTMARE

50. CARVE OUT A PROJECT
WORK IT INTO SHAPE

51. Let’s get started

52. JAVA EE IN MINUTES

53. FORGE LEVERAGES FACETS & PLUGINS
Project
Java Facet Web Facet X Facet
Plugin A Plugin B
... Plugin X

54. Demonstration of Forge
and Java EE Application

55. GETS YOU
STARTED
Handles details, gives you perspective QUICKLY
… and time
HANDLES
“GOTCHAS”
ADDS &
ACTIVATES
TECH
VIA
PLUGINS

56. TESTING JAVA EE USED TO BE
DIFFICULT

57. MANY STEPS REQUIRED FOR MODIFYING
CODE PRODUCTIVELY

58. ARQUILLIAN REMOVES THE STEPS

59. ARQUILLIAN

61. ARQUILLIAN REMOVES THE STEPS
SEE MORE AT
コンテナでテストをまわせ！

62. A powerful programming model.
Less code, greater portability.
Optimized for productivity & automation.
CDI and Forge plugins.
Absolutely. You saw it first hand.

63. ¡ Max Andersen
§ “See Context & Dependency Injection from Java EE 6 in
Action”
§ http://www.slideshare.net/maxandersen/see-context-
dependency-injection-from-java-ee-6-in-action
¡ Pete Muir REFERENCES
§ “CDI in Action”
¡ Andrew Lee Rubinger
§ “The Death of Slow”
§ http://www.slideshare.net/ALRubinger/devoxx-2011-
jboss-as7-death-of-the-slow
¡ B ert Ertman
§ EJB 3.1
§ http://www.slideshare.net/stephanj/ejb-31-by-bert-
ertman
¡ Antonio Goncalves
§ “To inject or not to inject: CDI is the question”
§ http://www.slideshare.net/agoncal/to-inject-or-not-to-inject-cdi-is-the-
question