[hibernate-issues] [Hibernate-JIRA] Commented: (HV-442) Make clear in the documentation which types are supported for built-in constraints

[Hardy Ferentschik (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HV-442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=40172#action_40172 ] 

Hardy Ferentschik commented on HV-442:
--------------------------------------

Interesting. I wonder if this was really intended to support strings for {{@Min}}, {{@Max}}, ...


> Make clear in the documentation which types are supported for built-in constraints
> ----------------------------------------------------------------------------------
>
>                 Key: HV-442
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-442
>             Project: Hibernate Validator
>          Issue Type: Improvement
>          Components: documentation
>    Affects Versions: 4.1.0.Final
>            Reporter: Gunnar Morling
>             Fix For: 4.2.0.CR1
>
>
> Hibernate Validator supports the standard constraints defined in the Bean Validation AP at more types than required by the specification. E.g. @Min/@Max are supported for Strings, which is beyond what's defined in the spec.
> In order to avoid irritations we should make clear in the documentation (http://docs.jboss.org/hibernate/validator/4.1/reference/en-US/html/validator-usingvalidator.html#validator-defineconstraints-builtin) which types are supported by HV in addition to the BV specification (for @Past/@Future we already do describe this for the Joda types for example).
> Furthermore the annotation processor documentation says (reference guide and web site):
> {quote}
> Have you ever caught yourself by unintentionally doing things like
> annotating Strings with @Min to specify a minimum length (instead of using @Size)
> ...?
> Then the Hibernate Validator Annotation Processor is the right thing for you.
> {quote}
> This example is misleading, as the AP won't mark this situation as an erronous (the described misunderstanding, that @Min would refer to the String length can still happen, though).
> This issue is based on a post in the HV forum (https://forum.hibernate.org/viewtopic.php?f=9&t=1009701).

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