[jbosstools-issues] [JBoss JIRA] Commented: (JBIDE-7875) Wizard for creating an AnnotationLiteral

[Dan Allen (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-7875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12570052#comment-12570052 ] 

Dan Allen commented on JBIDE-7875:
----------------------------------

Just to clarify when you need an AnnotationLiteral, it's sort of like a constructor for an annotation, since you can't easily create an annotation otherwise. You'd use it for programmatic selection of beans. For instance, consider the case when you need to fire an event.

@Inject Event<Document> documentEvent;
...
documentEvent.select(new UpdatedLiteral()).fire(documentEvent);

Though, for any annotation that has no attributes, the wizard should automatically create a static INSTANCE field as an optimization. That would allow:

documentEvent.select(UpdatedLiteral.INSTANCE).fire(documentEvent);

And to provide a little more background, creating annotation literals and the static INSTANCE field (in cases where the annotation has no attributes) are coding conventions in Seam.


> Wizard for creating an AnnotationLiteral
> ----------------------------------------
>
>                 Key: JBIDE-7875
>                 URL: https://issues.jboss.org/browse/JBIDE-7875
>             Project: Tools (JBoss Tools)
>          Issue Type: Feature Request
>          Components: cdi (jsr-299)
>            Reporter: Dan Allen
>            Assignee: Viacheslav Kabanovich
>             Fix For: 3.2.0.CR1
>
>         Attachments: New Annotation Literal.png
>
>
> We are recommending to developers, particularly extension designers, that they create an AnnotationLiteral for every qualifier in their public API. Creating an AnnotationLiteral can be a tad tedious. Thus, we should introduce a wizard to create them in JBT.
> Here's a whole bunch of annotation literals to use as a reference:
> https://github.com/weld/extensions/tree/1.0.0.Beta1/impl/src/main/java/org/jboss/weld/extensions/literal
> The real time saver is creating an AnnotationLiteral for an Annotation (qualifier) that has attributes.

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