[hibernate-dev] On possible extensions for the validator

[Hardy Ferentschik]

Hi,

Help and contributions are always welcome :)

I recommend you start with this page  
http://community.jboss.org/wiki/ContributingtoHibernateValidator
It contains information on where and how to check out the source and how  
to built the project.

Once you have a local checkout and made yourself a little familiar with  
the code you can
always ask more concrete questions either on this mailing list or on the  
IRC channel #hibernate-dev on
irc.freenode.net.

We would also create an issue for the feature you want to implement on the  
Validator Jira -
http://opensource.atlassian.com/projects/hibernate/browse/HV

Hope this helps for now.

--Hardy


On Tue, 05 Oct 2010 15:49:06 +0200, Federico Mancini  
<mancini_federico at yahoo.it> wrote:

>   Hi and thank you for your answer.
>
> I am aware that our work is extremely similar to the jsr 303,
> and that is exactly why I wanted to show it to you.
> It just happened that we independently developed similar solutions for  
> the same problem, but
> when we saw the specs for the jsr 303, we realized that it would not  
> make sense to continue
>   since a much better version of the same thing was already up and going  
> in Hibernate.
>
> However we have spent a good amount of time and effort on our validator,  
> and it would be great if some of our ideas could be
> picked up by the Hibernate Validator rather than just watch them go to  
> waste.
>
> Therefore I am very happy that you find some of it of interest, and of  
> course
> I would like to get involved and contribute as I can.
>
> Unfortunatly I am not familiar with the Hibernate Validator code (I only  
> read the jsr specs) or
> how you guys work, so I would not
> know where to start, but if you give my some time (I am also working on  
> some other project right now) and guidelines I will be
> happy to help.
>
> Thanks again for the reply,
> Federico
>
> Den 05.10.2010 15:17, skrev Hardy Ferentschik:
>> Hi Frederico,
>>
>> sorry for the late reply. I finally had some time to read through your  
>> paper.
>> I think there are strong similarities between you work and Hibernate  
>> Validator or
>> more specific the Bean Validation specification (JSR 303).
>>
>> Property validation in the SHIP Validator is basically the same as in  
>> Bean Validation.
>> And what you call cross-annotations would be a class level validator in  
>> Bean Validation terms.
>>
>> Bean Validation also offers constraint composition similar to what is  
>> described in your paper.
>> What Bean Validation does not offer is a boolean composition of the  
>> constraints. Here conjunction of
>> constraints is always assumed.
>>
>> We are not able to do something like this:
>>
>>
>> @BoolTest(BoolType.OR)
>> @Null
>> @Max(10)
>> @Target({ METHOD, FIELD })
>> @Retention(RUNTIME)
>> @Constraint(validatedBy = { })
>> public @interface NullOrMax {
>>    public abstract String message() default "foo";
>>    public abstract Class<?>[] groups() default { };
>>    public abstract Class<? extends Payload>[] payload() default { };
>>    @OverridesAttribute(constraint = Max.class, name = "value")
>>    public abstract long max()
>> }
>>
>> Also the ability to validate a subset of all properties from within a  
>> class level validator sounds interesting.
>>
>> We could implement these features as Hibernate Validator specific  
>> extensions.
>> Are you interested in getting involved?
>>
>>
>> --Hardy
>>
>>
>> On Tue, 05 Oct 2010 09:48:15 +0200, Federico Mancini  
>> <mancini_federico at yahoo.it> wrote:
>>
>>>   Hi again,
>>> I was just wondering whether I should interpret the lack of answers as
>>> "no, this is not interesting at all", or as "we have a lot of other
>>> things to do and do not have time for this right now"?
>>>
>>> Federico
>>>
>>> Den 22.09.2010 09:08, skrev Federico Mancini:
>>>>    Hi all,
>>>> I am new to the list and I am opening this thread on Emmanuel  
>>>> Bernard's
>>>> suggestion, in order to
>>>> discuss some possible extensions to the validator (jsr 303) I have  
>>>> been
>>>> working on with a couple of collegues.
>>>> Mainly it concerns the possibility to extend composition with boolean
>>>> operators (ex.: A field is either in the range 1-10 OR 20-30 AND
>>>> notNull)  and allow validation of sets of interdependent properties
>>>> (ex.: EITHER the name field is notNull OR the surname field is  
>>>> notNull/
>>>> AT LEAST 1 field must be filled/etc....).
>>>>
>>>> A description of the experimental framework we implemented can be  
>>>> found
>>>> here http://www.ii.uib.no/publikasjoner/texrap/pdf/2009-389.pdf , and
>>>> some further discussion on the choices we made here
>>>> http://www.ii.uib.no/~federico/papers/Annotations.pdf.
>>>>
>>>> I hope this might be of some interest for the Hybernate Validator  
>>>> project,
>>>> but, even if not, it would be nice to get some feedback.
>>>>
>>>> Thanks,
>>>> Federico Mancini
>>>> _______________________________________________
>>>> hibernate-dev mailing list
>>>> hibernate-dev at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>>>>
>>>
>>> _______________________________________________
>>> hibernate-dev mailing list
>>> hibernate-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>>
>>
>