Re: Relation oddity
Re: Relation oddity
- Subject: Re: Relation oddity
- From: Christian Pekeler <email@hidden>
- Date: Tue, 27 Jun 2006 10:59:25 -0600
I believe that a distinction needs to be made between no inverse
relationship and an inverse relationship that's not marked as a
class property. By making the to-many inverse relationship not a
class property, EOF won't use it to keep the object graph
consistent (i.e., it won't fetch those 1,000,000 objects), but I
think EOF may still use this inverse relationship in ways that can
be beneficial. So I always include inverse relationships in my
eomodels but don't mark as class properties those to-many inverse
relationships that might cause unacceptable fetching activity.
Seems to work well for me.
That's an interesting conjecture. Are you aware of any reference
documentation or experimental results to support this position? It
seems equally likely (in my current state of ignorance) to provide
beneficial results, to simply consume extra unused resources or to
have no discernible effect. If beneficial results, I'd love to know
what they are. If extra unused resource consumption, then we'd all
probably be better to avoid the distinction as well as the inverse
relationship.
IIRC, earlier versions of EOF used to acknowledge delete rules on non-
property relationships. So you could mark that "1,000,000 objects to-
many" as non-property and still set it for delete-deny or delete-
cascade, which was very useful. Unfortunately, that doesn't work
anymore. So unless you need that relationship to flatten another
relationship, non-property relationships don't seem to be useful, AFAIK.
I've filed a bug about this over three years ago. Just checked the
status - is still "Open." I've given up hope on that one...
Christian
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