[forge-dev] Scaffolding immutable JPA entities

[Max Rydahl Andersen]

On Thu, Jun 27, 2013 at 07:57:33AM -0400, Vineet Reynolds Pereira wrote:
>>
>> You would be generating like a <Entity>DO instead ?
>
>I didnt quite catch that. To clarify, it would be a POJO/DTO; certainly not an Entity since I'd like to avoid issues with the EntityManager deciding to persist or manage it.

Yes, I just tried to say given an Entity named Abraham and he is immutable you would create a dataobject named AbrahamDO.

/max
  
>
>>
>>
>> >Thanks,
>> >Vineet
>> >
>> >
>> >
>> >----- Original Message -----
>> >> From: "Max Rydahl Andersen" <manderse at redhat.com>
>> >> To: "forge-dev List" <forge-dev at lists.jboss.org>
>> >> Sent: Thursday, June 27, 2013 3:27:21 PM
>> >> Subject: Re: [forge-dev] Scaffolding immutable JPA entities
>> >>
>> >> This is happening because you can't use the entity it self as "data entry"
>> >> model
>> >> to pass to criterias/queries etc ?
>> >>
>> >> Could it make sense to have a way to fallback on to map based approach for
>> >> search criterias
>> >> which are not mapped to strongly typed classes when you are dealing with
>> >> such
>> >> immutable types
>> >> (or rather entities without setters) ?
>> >>
>> >> /max
>> >>
>> >> On Mon, Jun 24, 2013 at 07:23:47PM -0400, Vineet Reynolds Pereira wrote:
>> >> >Hey all,
>> >> >
>> >> >   FORGE-917 <https://issues.jboss.org/browse/FORGE-917> was fixed a few
>> >> >   days back where in immutable classes were excluded from the generated
>> >> >   scaffold, i.e. no create,search,update screens were generated for such
>> >> >   classes.
>> >> >
>> >> >   I've run into a related problem where other JPA entities are composed
>> >> >   of
>> >> >   one or more immutable types. The generated scaffold does not allow
>> >> >   creation of the constituent immutable types (obviously) along with the
>> >> >   root JPA entity. Additionally, if these root JPA entities contain Bean
>> >> >   Validation constraints on the immutable types, then creation or
>> >> >   updation
>> >> >   of these entities would fail depending on what constraints are
>> >> >   imposed.
>> >> >
>> >> >   I think this scenario demands that this limitation be documented with
>> >> >   possible approaches to resolve this issue. Obviously, it makes little
>> >> >   sense to also prevent scaffolds from being generated for JPA entities
>> >> >   composed of immutable types. Also, this makes revisit FORGE-917 -
>> >> >   should
>> >> >   we revisit the design of the generated managed (view)beans to support
>> >> >   immutable types?
>> >> >
>> >> >   What do you think?
>> >> >
>> >> >Vineet
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