From the Spring Framework to Java EE 7

Talk from jDays 2013

Transcript

1. @ivar_grimstad jDays 2013 From the Spring Framework to Java EE 7 Ivar Grimstad
2. @ivar_grimstad Ivar Grimstad Software Architect at Cybercom Sweden About the Speaker jDays 2013
3. @ivar_grimstad “ […] is so much better than […]!” What this presentation is NOT about jDays 2013
4. @ivar_grimstad “[…] rocks and […] sucks!” What this presentation is NOT about jDays 2013
5. @ivar_grimstad • Feature comparison • Migration from Spring Framework to Java EE What this presentation IS about jDays 2013
6. @ivar_grimstad • Background • Comparison of Spring Framework and Java EE • Convert Demo application to Java EE Highlight differences and similarities • Lessons learned Content jDays 2013
7. @ivar_grimstad 1998 JPE 1999 J2EE 1.2 2001 J2EE 1.3 2002 Spring 2003 J2EE 1.4 2004 Spring 1 2006
 Java EE 5
 Spring 2 2009 Java EE 6 Spring 3 2013 Java EE 7 Spring 4 History jDays 2013
8. @ivar_grimstad Flexible Lightweight Modular Extensible Spring Framework jDays 2013
9. @ivar_grimstad Java EE 7 jDays 2013
10. @ivar_grimstad Comparison of Selected Features jDays 2013 Feature Spring 3.2.x Java EE 7 Dependency Injection Spring IoC CDI Web Framework Spring MVC JSF REST Spring MVC JAX-RS Transactions Annotations, AOP EJB, JTA Persistence JDBC Templates, Spring Data JPA Batch Spring Batch Batch Applications for Java Platform WebSockets - Java API for WebSockets 1.0 Validation Spring Validation API Bean Validation API Security Spring Security Java EE Security Messaging JMS JMS
11. @ivar_grimstad Comparison of Selected Features jDays 2013 Feature Spring 3.2.x Java EE 7 Dependency Injection Spring IoC CDI Web Framework Spring MVC JSF REST Spring MVC JAX-RS Transactions Annotations, AOP EJB, JTA Persistence JDBC Templates, Spring Data JPA Batch Spring Batch Batch Applications for Java Platform WebSockets - Java API for WebSockets 1.0 Validation Spring Validation API Bean Validation API Security Spring Security Java EE Security Messaging JMS JMS
12. @ivar_grimstad Demo jDays 2013
13. @ivar_grimstad Online Cook Book – Web UI – REST API – Persistent storage Demo Application jDays 2013
14. @ivar_grimstad Demo Application Data Model jDays 2013
15. @ivar_grimstad Demo Application Architecture jDays 2013
16. @ivar_grimstad Spring Implementation jDays 2013
17. @ivar_grimstad • WEB Application • Based on Spring Framework • Mix of XML and Annotations Demo Application Characteristics jDays 2013
18. @ivar_grimstad 1. Add Java EE dependency 2. Layer for layer 1. Add layer specific Java EE configuration (web.xml, persistense.xml, faces-config.xml) 2. Add Java EE annotations 3. Replace Spring specific implementation with Java EE 4. Replace Spring injections with CDI 3. Remove Spring configuration 4. Remove Spring Dependencies Migration Steps jDays 2013
19. @ivar_grimstad Layer for Layer Walkthrough jDays 2013
20. @ivar_grimstad Preparations jDays 2013
21. @ivar_grimstad Dependency Injection jDays 2013 Spring IoC CDI @Autowired XML @Inject
22. @ivar_grimstad Persistence Layer jDays 2013
23. @ivar_grimstad Persistence Layer jDays 2013 Spring JDBC JPA @Repository JdbcTemplate @PersistenceContext @Entity @OneToMany, @ManyToOne, @ManyToMany persistence.xml
24. @ivar_grimstad Spring JDBC jDays 2013
25. @ivar_grimstad JPA jDays 2013
26. @ivar_grimstad Service Layer jDays 2013
27. @ivar_grimstad Service Layer jDays 2013 Spring POJO EJB @Service @Transactional @Local @Stateless
28. @ivar_grimstad Spring jDays 2013
29. @ivar_grimstad EJB jDays 2013
30. @ivar_grimstad REST API jDays 2013
31. @ivar_grimstad REST API jDays 2013 Spring MVC JAX-RS @Controller
 @RequestMapping @ResponseBody @RequestBody @PathVariable @RequestParam @Path @GET, @POST, @PUT, @DELETE @Consumes, @Produces @PathParam @QueryParam
32. @ivar_grimstad Spring MVC jDays 2013
33. @ivar_grimstad JAX-RS jDays 2013
34. @ivar_grimstad Web UI jDays 2013
35. @ivar_grimstad Web UI jDays 2013 Spring MVC Java ServerFaces JSP XHTML @Controller @RequestMapping @Named
36. @ivar_grimstad Spring MVC Controller jDays 2013
37. @ivar_grimstad JSF Controller jDays 2013
38. @ivar_grimstad Spring resources (i18n) jDays 2013 applicatonContext.xml Create.jsp
39. @ivar_grimstad JSF resources (i18n) jDays 2013 faces-config.xml Create.xhtml
40. @ivar_grimstad Remove Spring jDays 2013
41. @ivar_grimstad 1. Added Java EE dependency 2. Layer for layer 1. Added layer specific Java EE configuration (web.xml, persistense.xml, faces-config.xml) 2. Added Java EE annotations 3. Replaced Spring specific implementation with Java EE 4. Replaced Spring injections with CDI 3. Removed Spring configuration 4. Removed Spring Dependencies Migration Steps – what we did jDays 2013
42. @ivar_grimstad Application Architecture - Spring jDays 2013
43. @ivar_grimstad Application Architecture – Java EE jDays 2013
44. @ivar_grimstad Dependencies (Spring) jDays 2013
45. @ivar_grimstad Dependencies (Java EE) jDays 2013
46. @ivar_grimstad WAR File (Spring) jDays 2013
47. @ivar_grimstad WAR File (Java EE) jDays 2013
48. @ivar_grimstad • Spring Framework has excellent support for testing • No direct support for testing in Java EE 7 • Tools like Arquillian is an option What about testing? jDays 2013
49. @ivar_grimstad • Simplified JMS • Java API for WebSocket 1.0 • JSON Processing 1.0 • Batch Applications for Java Platform 1.0 Not Covered Here jDays 2013
50. @ivar_grimstad • Spring IS a proprietary framework • Java EE is a standard • Many Spring applications run in a Java EE container anyway Why Migrate? jDays 2013
51. @ivar_grimstad • If your target platform is prior to Java EE 6 • If your developers are experts on Spring Framework • If your application is heavily based on AOP When NOT to Migrate? jDays 2013
52. @ivar_grimstad • Migration is not that hard • How hard it is depends on application structure • Migration from newer Spring version is easier – may even be required to upgrade first • Not all applications can be migrated Lessons Learned jDays 2013
53. @ivar_grimstad Wrap Up jDays 2013
54. @ivar_grimstad jDays 2013