[bv-dev] Configure validation constraints at runtime

[Gunnar Morling]

+1 for adding something like this. Marcos, could you open an issue in our
tracker (https://hibernate.atlassian.net/browse/BVAL)?

If you don't want to use the current dynamic constraint APIs in HV/Apache
BVAL, you might consider to generate XML constraint descriptors based on
your configuration. That's a bit more tedious but portable between
providers.

Slightly related, I see people ask every now and then for a facility for
copying constraint definitions between models. Users could build this
themselves if aforementioned dynamic constraint definition was possible, or
we could add some more high-level support for this.

--Gunnar




2014/2/25 Matt Benson <mbenson at apache.org>

> I would be interested in getting dynamic constraint functionality into the
> BV spec. Between what Hibernate Validator offers and what is supported by
> the dynamic add-on for Apache BVal it shouldn't take us much to agree on an
> API.
>
> Matt
> On Feb 24, 2014 6:39 PM, "Marcos Antonio" <marcos_antonio_ps at hotmail.com>
> wrote:
>
>> Let me try to be a bit more clear.
>> Consider this entity:
>>
>> @Entity
>> public class Employee
>> {
>>     private String _name;
>>
>>     // ...
>>
>>     @Size(min = 1, max = 50)
>>     public String getName()
>>     {
>>         return _name;
>>     }
>>
>>     // ...
>> }
>>
>> If some client of mine asked me to change the name of the employees to
>> accept 70 characters because 50 is not enough anymore I have to change my
>> application for all clients. But if the bean validation specification
>> allowed me to configure the constraints dinamically I could do this
>> configuration on a cliente basis. All I had to do was to change the
>> database structure for the specific column, register this fact in some
>> table of mine and in the application startup my application would check for
>> changes and configure the corresponding bean constraint. With static
>> constraints (as it is today) we don't have this flexibility.
>>
>> Marcos
>>
>> ----------------------------
>>
>> From: emmanuel at hibernate.org
>> Date: Mon, 24 Feb 2014 19:00:35 +0100
>> Subject: Re: [bv-dev] Configure validation constraints at runtime
>> To: beanvalidation-dev at lists.jboss.org; marcos_antonio_ps at hotmail.com
>>
>> Hi
>> We don't have a defined roadmap for the future of Bean Validation. But
>> that would be a nice addition in my opinion.
>>
>> What's your use case for it?
>>
>> Emmanuel
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>>
>
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