Hi,
I'm using JPA (version 1.0.2) in order to manage some entities.
Right
now I've one entity called Operator with an attribute called Contacts,
that is a relation-ship one-to-many to other table, with a cascade type
ALL.
Some times I update the Operator and the nested Contacts with the merge method. I've two questions:
1.
Is there any way to delete or add a nested contact in the update
operation? ie, I update some date of the operator with a merge and at
the same time I wanto to delete one of its contacts.
2. If I've an entity of the database persisted, and I've a new
entity with the same ID than the one persisted but some data modified,
could I merge the second entity with the first one with a simple merge
method? If I do that all the old data not represented in the new entity
is removed.
Thanks
