[hibernate-issues] [Hibernate-JIRA] Commented: (ANN-506) Request for Expression Language (EL) for Validator annotations

[Emmanuel Bernard (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/ANN-506?page=comments#action_25659 ] 

Emmanuel Bernard commented on ANN-506:
--------------------------------------

I'm waiting for the unified EL spec to come with a release

> Request for Expression Language (EL) for Validator annotations
> --------------------------------------------------------------
>
>          Key: ANN-506
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-506
>      Project: Hibernate Annotations
>         Type: New Feature

>   Components: validator
>  Environment: All
>     Reporter: Chris Hansen

>
> Original Estimate: 8 weeks
>         Remaining: 8 weeks
>
> Since annotations are limited to primitive types, I would like to see a type of EL for the Validator annotations (similar to the JSF/JSP EL). This would effectively overcome this limitation of annotations and allow for very powerful functionality, such as utilizing the natural ordering of classes. For example:
> @Range(min="#{MyClass.MIN_OBJECT}", max="#{MyClass.MAX_OBJECT}") public MyClass getCurrent()
> Assuming MIN_OBJECT and MAX_OBJECT are (static, final) instances of MyClass and MyClass implements Comparable<myClass>, the validator could compare the return value of the method with both MIN_OBJECT and MAX_OBJECT and validate that it is within the desired range.
> This is just an example. I'm sure there are many more interesting uses possible because this is a powerful concept.
> The regular functionality of the annotatinos could be preserved by treating static (non-EL) values, such as the string "0", as old-style primitives, e.g. @Min(value="0").

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
   http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see:
   http://www.atlassian.com/software/jira