ValidateUniqueness at the property level

[ghachey]

Hi,

Is there a way to @ValidateUniqueness(property = "something") on the property level? Something like the hibernate @NotNull validator.  I don't see one in trails or hibernate APIs.  I don't mind the class level @ValidateUniqueness but I have more than one property that have to be unique for a particular domain. Just using unique = true in the @PropertyDescriptor throws a scary exception at the user.  Or do I have to write my own hibernate validator and integrate it with tapestry's error reporting in trails?

Regards,

--
GH

[Alejandro Scandroli-2]

Hi Ghislain

I'm sorry but there is currently no way to do what you want without
some extra code.
It's very difficult (almost impossible) to catch that "scary"
exception to present it in a user friendly format because it's a low
level DB exception and the "Open session in view" pattern gets in the
the way. Three options I can think of:

* As you said: one option is to create your own Hibernate validator.
* Try to catch the low level DB exception clossing the transaction and
flushing the DB session on save, without waiting for the "Open Session
In View" to do it.
* Modify the ValidateUniqueness annotation and the
ValidateUniqueAspect to allow more than one "unique" property. I think
this will be the faster way to do what you want.

Saludos.
Alejandro.



On Fri, Jul 10, 2009 at 6:43 AM, ghachey<ghachey@...> wrote:

>
> Hi,
>
> Is there a way to @ValidateUniqueness(property = "something") on the
> property level? Something like the hibernate @NotNull validator.  I don't
> see one in trails or hibernate APIs.  I don't mind the class level
> @ValidateUniqueness but I have more than one property that have to be unique
> for a particular domain. Just using unique = true in the @PropertyDescriptor
> throws a scary exception at the user.  Or do I have to write my own
> hibernate validator and integrate it with tapestry's error reporting in
> trails?
>
> Regards,
>
> --
> GH
> --
> View this message in context: http://www.nabble.com/ValidateUniqueness-at-the-property-level-tp24421725p24421725.html
> Sent from the Trails - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe from this list, please visit:
>
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>
>
>

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[ghachey]

Thanks Alejandro,

Yes I will go with 1st or 3rd option.  Will post result if it can help anyone too.

Salut,

--
GH

Alejandro Scandroli-2 wrote:

Hi Ghislain

I'm sorry but there is currently no way to do what you want without
some extra code.
It's very difficult (almost impossible) to catch that "scary"
exception to present it in a user friendly format because it's a low
level DB exception and the "Open session in view" pattern gets in the
the way. Three options I can think of:

* As you said: one option is to create your own Hibernate validator.
* Try to catch the low level DB exception clossing the transaction and
flushing the DB session on save, without waiting for the "Open Session
In View" to do it.
* Modify the ValidateUniqueness annotation and the
ValidateUniqueAspect to allow more than one "unique" property. I think
this will be the faster way to do what you want.

Saludos.
Alejandro.



On Fri, Jul 10, 2009 at 6:43 AM, ghachey<[e-mail]> wrote:
>
> Hi,
>
> Is there a way to @ValidateUniqueness(property = "something") on the
> property level? Something like the hibernate @NotNull validator.  I don't
> see one in trails or hibernate APIs.  I don't mind the class level
> @ValidateUniqueness but I have more than one property that have to be unique
> for a particular domain. Just using unique = true in the @PropertyDescriptor
> throws a scary exception at the user.  Or do I have to write my own
> hibernate validator and integrate it with tapestry's error reporting in
> trails?
>
> Regards,
>
> --
> GH
> --
> View this message in context: http://www.nabble.com/ValidateUniqueness-at-the-property-level-tp24421725p24421725.html
> Sent from the Trails - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe from this list, please visit:
>
>    http://xircles.codehaus.org/manage_email
>
>
>

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