[jbossseam-issues] [JBoss JIRA] Closed: (JBSEAM-129) JSF SelectItems automatic Converter creation using a @Selectable annotation

[Gavin King (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBSEAM-129?page=all ]

Gavin King closed JBSEAM-129.
-----------------------------

    Resolution: Out of Date
      Assignee: Pete Muir

Pete Muir's stuff supercedes this old issue.

> JSF SelectItems automatic Converter creation using a @Selectable annotation
> ---------------------------------------------------------------------------
>
>                 Key: JBSEAM-129
>                 URL: http://jira.jboss.com/jira/browse/JBSEAM-129
>             Project: JBoss Seam
>          Issue Type: Feature Request
>          Components: JSF
>         Environment: Jboss Application Server using Myfaces jsf and Seam from CVS
>            Reporter: James Salt
>         Assigned To: Pete Muir
>   Original Estimate: 1 week
>  Remaining Estimate: 1 week
>
> The entity class annotated with @Selectable would have to have an @Id attribute and a attribute annotated with something like @SelectionName for the displayed name of the object in the selectItems.
> The converters for each @Selectable entity could be created and cached at seam scanner time for each entity component that had @Selectable annotation. This scanner task would also need to dynamically register the converters with jsf/myfaces which I believe is possible using the myfaces Application class (don't know about the RI implementation). 
> The user would be responsible for the creation of the list of objects (Seam supplying a static method to convert a list of objects to a list of select items), then the converters would deal with converting the selected item back to the object using a direct database lookup. 
> As mentioned in the below thread, the object marked as @Selectable would need to implement a custom equals operation (being careful about @Datamodel update issues), so that myfaces could validate it correctly. 
> For reverese engineering purposes, anything that has a field of a certain object would infer that that object is selectable, then the user could customise which field is used for the @Selectionname annotation. This would be very valuable when reverse engineering, and would remove a significant coding burden from the Seam developer. 

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