Hi,
I have a fairly complex structure of several entities (actually this is not so
complex after all). Eventually when I try to delete an ElectronicDocument (this
is a pure ERD2W app, no custom delete() stuff) my application throws up with
java.lang.IllegalStateException: A valid global ID could not be obtained for
entity named TextblockReference, relationship named textblocks, primary key
dictionary {electronicDocumentID = 14; textblockID = 65; }.
I do not really understand what the problem is here but I think it might have
something to do with delete rule specification in the model or the flattened
relationship. What confuses me is that there are delete rules for both
directions of a relationship which makes no sense to me. And what should those
be for the flattened relationship?
Here is the model:
ElectronicDocument <-->>TextblockReference<<-->Textblock. TextblockReference is
more than a simple m:n join table. However I have a flattened m:n relationship
between ElectronicDocument (called textblocks) and Textblock (called documents)
across TextblockReference. There are other entities hanging off
TextblockReference: TextblockReferemce<-->>Params<-->>Data.
When I delete an ElectronicDocument I want all associated TextblocReferences
and everything hanging off it be gone, however Textblock should stay around but
not have that particular ElectronicDocument object in its flattened
relationship anymore.
What would be the proper delete rules and why would I have to specify a delete
rule for both directions (this is a general question)? It does not make sense
to have a rule from the many to the one entity. Oh, and the DB is Oracle 9 and
there are cascading FKs defined. I need those because there are some 3rd party
apps messing with the data as well. Yes, ugly, but that's what the customer
wants...
Thanks for any help
---markus---
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