1. SEAM 3
a Web developer’s view
Matija Mazi, Parsek

3. What is Seam 3?
• Enterprise Internet application
platform
• Based on Java EE 6
– Especially CDI

4. Agenda
• Java EE 6 Example App
• Seam 3 Example App
• Seam and Java Standards
• Contributing to Seam

5. Java EE 6: Our example
• Web Application Technologies
– JSF (JavaServer Faces) 2.0 with Facelets
– EL (Expression Language) 2.2
• Enterprise Technologies
– CDI 1.0 (Contexts & Dependency Injection)
– EJB 3.1 (Enterprise JavaBeans)
– JPA (Persistence) 2.0
– Bean Validation 1.0

6. Java EE 6: Our example
• Let’s see the demo!

7. Java EE 6: What we used
• General (javax.annotation.*) • JPA (javax.persistence)
– @PostConstruct – EntityManager
– CriteriaBuilder, CriteriaQuery
• EJB3 (javax.ejb) – @Entity
– @Stateful – @Id
– @GeneratedValue
– @PersistenceContext
• CDI (javax.enterprise.*)
– @RequestScoped
– @Event • Validation (javax.validation.*)
– @Observes – @NotNull
– @Model – @Pattern
– @Produces – @Size
• CDI (javax.inject.*)
– @Inject
– @Named

8. Seam 3: Our example
• Let’s see the demo!

9. Seam 3: Features (1/2)
• Forge • Seam Configuration
– Plugins
• Seam Persistence
• Seam Solder – Transaction Management
– @Veto, @Requires, @Exact, – Seam-managed persistence
@Client, @Named packages, contexts
@FullyQualified
– Annotation Literals
– Evaluating EL • Seam Servlet
– Resource Loading – Servlet/Session events
– Logging – Injectable Servlet objects and
request state
– Reference to the BeanManager
– @RequestParam,
– Properties @HeaderParam,
– @Unwraps @ContextPath,
– Default Beans @CookieParam, @ServerInfo,
– Generic Beans @Principal
– Service Handler

10. Seam 3: Features (2/2)
• Seam Security • Seam Catch
• Seam Remoting
• Seam International • Seam REST
– Locales, Timezones • Seam Validation
– Messages • Seam Wicket
• Seam Cron
• Seam Faces
• Seam Drools
– Faces Events Propagation
– Faces Artifact Injection • Seam Errai CDI (GWT)
– Messages • Seam JCR (Content Repo)
– @RenderScoped, • Seam JMS
@ViewScoped, Flash • Seam Mail
– <s:validateForm>,
<s:viewAction> • Seam Reports
• Seam Social
• Seam Spring

11. Seam: a source of ideas
for JavaEE standards

12. Seam: a source of ideas
for JavaEE standards
(stuff in JEE6 that came from Seam)
• CDI (JSR 299) • JSF 2 (JSR 314)
– @Inject – Navigation
– @*Scoped – <f:viewParam>
– @Produces – <f:selectItems>
– Events – Get Requests
– Most of the stuff, really • <h:link>, <h:button>
– Scopes
• CDI 1.1 (JSR 346) – Annotations
• Managed Beans
– from Seam 3
• Converters/Valitators
• esp. Seam Solder
– Resources
– Validation integration
– EL method parameters

13. Contributing to OS
• github account
• git installed
• No need for commit permissions
• https://github.com/seam/international/pull/11

14. Seam 3 and JavaEE 6
• Thank you!
mazi@parsek.net

15. Seam 3: Our Example
• Seam International • Seam Cron
– Messages – Scheduled tasks
• Seam Faces • Seam Mail
– Messages – Mail templates
– @Inject in Validators – Mail sending
• Seam Solder
– Resource Loading