Re: [hibernate-dev] Hibernate Envers > link between to auditable entities
Tarek -
There are a few ways we can tackle what you want all within the scope of
Envers,
but some of it highly depends upon details specific to the relationship
between
Product (P) and Offer (O).
1. What is the collection type used in Product for the related offers?
If this happens to be a List<>, would it be possible to use a Set<>
instead?
2. Is there a requirement that Offer should own the relationship with
Product?
In other words, is it possible to invert the relationship such that the
collection side is the owner instead?
Chris
On 09/01/2016 06:14 AM, Dev Stack wrote:
Hello,
we have in our model entity P (product) and entity O (offer). The two
entities have a link.
one instance of P can have one or many O instances.
an instance O has a reference to only one instance of P.
The link is managed in the O side.
P and O are revisioned by Hibernate Envers.
Two use cases to cover:
1) If P instance is updated (new revision) we want that O keep the link
with the old revision of P.
2) When I update O instance, I will move the reference to the last revision
of O instance.
What we did is, inside O class we added to attributes P.id and P.revision.
So when we load the object P we use these to fields to load manually (O DAO
has reference P DAO).
Is there a better way to do it?
Should we keep the reference of P in O instance as auditable and Envers
will manage?
Thanks,
Tarek
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