Ordered many-to-many are not currently supported, and I'm not sure how
efficient it would be to do it, from a performance point of view. A reorder
would result in a lot of updates if keeping the sort indexes in the
many-to-many table.
You could maybe use this variant, in which you define the many-to-many
relation object yourself:
Entity EntityA {
String name key
- List<@EntityABRelation> relatedTypeBs opposite entityA
}
ValueObject EntityABRelation {
- @EntityA entityA opposite relatedTypeBs
- @EntityB entityB opposite relatedTypeAs
}
Entity EntityB {
String name key
- List<@EntityABRelation> relatedTypeAs opposite entityB
}
But, I would suggest another design. Maybe storing the ordered ids as a
comma separated string in EntityA and use a Set for the many-to-many
association and do the sorting in java.
/Patrik
greatfooty wrote:
>
> Guys
>
> Not sure if this is possible using sculptor but I'm trying to figure
> neatest way to do re-ordering of a List of EntityB where it participates
> in a many-to-many relationship with EntityA. So say for example I've
> defined as follows:
>
> Entity EntityA {
> String name key
> - List<@EntityB> relatedTypeBs <-> relatedTypeAs
> }
>
> Can I retrieve an instance of EntityA, then within my UI offer a neat
> list-shuttling page to enable re-order the List of EntityB and then simply
> have it persisted by using EntityAService.update(entityA) ??
>
> Or do I need to manage this manually by say explicitly modelling an
> intersecting entity and/or manipulating the intersecting entity
> auto-created by sculptor ?? Any suggestions on neatest approach for this?
>
>
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