Re: [eclipselink-users] Cacheing non-root entities

[Tom Ware <tom.ware@xxxxxxxxxx>]

Hi Andreas,

  I have not tried this, but after discussing with a colleague, we think that 
this configuration should work.  Doing things this way would create some 
limitations on using things like EclipseLink's in-memory querying feature, but 
as long as you are not specifically using it we think you will be ok.

-Tom

On 05/06/2013 4:08 AM, Andreas Joseph Krogh wrote:
> I would like to cache, with @Cacheable, non-root entities.
> Say you have this model:
>
> @Entity
> @Table(name =*"parent"*)
> @Inheritance(strategy = InheritanceType.JOINED)
> @DiscriminatorColumn(name =*"type"*, discriminatorType = DiscriminatorType.STRING)
> @SequenceGenerator(name =*"SEQ_STORE"*, sequenceName =*"entity_id_seq"*, allocationSize =1)
> *abstract class**AbstractEntityObject*  {
>
> @Entity
> @Table(name =*"child"*)
> @PrimaryKeyJoinColumn(name =*"entity_id"*)
> @DiscriminatorValue(*"PERSON"*)@Cacheable  /// This does not work in Hibernate because we're not the Root-entity/
> *class**Person*  *extends**AbstractEntityObject*
>
> I want to cache /inherited/ entities of AbstractEntityObject but am unable to do
> so in Hibernate because Hibernate only allows the root-entity,
> AbstractEntityObject, to be cached.
> Is this according to spec or a Hibernate-limitation? Is this possible in
> EclipseLink? The point is that I don't want to cache *all* inherited entities of
> AbstractEntityObject.
> Thanks.
> --
> Andreas Joseph Krogh <andreak@xxxxxxxxxxxx>      mob: +47 909 56 963
> Senior Software Developer / CTO - OfficeNet AS - http://www.officenet.no
> Public key: http://home.officenet.no/~andreak/public_key.asc
>
>
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