[hibernate-issues] [Hibernate-JIRA] Moved: (HV-18) Request for Expression Language (EL) for Validator annotations

[Emmanuel Bernard (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HV-18?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emmanuel Bernard moved ANN-506 to HV-18:
----------------------------------------

    Component/s:     (was: validator)
            Key: HV-18  (was: ANN-506)
        Project: Hibernate Validator  (was: Hibernate Annotations)

> Request for Expression Language (EL) for Validator annotations
> --------------------------------------------------------------
>
>                 Key: HV-18
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-18
>             Project: Hibernate Validator
>          Issue Type: New Feature
>         Environment: All
>            Reporter: Chris Hansen
>   Original Estimate: 8 weeks
>  Remaining Estimate: 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").

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