Hi Joe, EOF had a problem with unintentionally (or unexpectedly) fired faults loading in extra records (yes, potentially millions), especially when using addObjectToBothSidesOfRelationshipWithKey, but I've not seen this happen in Cayenne and I believe I recall Andrus saying it doesn't happen unless you explicitly trigger a fault -- such as state.getAddresses(). If you have an Address and do address.setState(state) you should be fine, even if you have an explicit or complimentary relationship going the other way (State ->> Address).
mrg On Tue, Feb 28, 2012 at 9:05 PM, Joseph Senecal <[email protected]> wrote: > My concern with the automatic reverse relationships is if adding an object > fires a fault. Firing a fault on a small dimension table could result in > attempting to load millions of records from the detail table into memory. As > long as the automatic reverse relationship doesn't do that, I don't care. > > Joe > > On Feb 28, 2012, at 4:54 PM, Michael Gentry wrote: > >> Hi John, >> >> I don't know the answer to your question offhand, but what is the harm >> that is being caused from your perspective (aside from extra logs on >> startup)? >> >> Thanks, >> >> mrg >> >> >> On Tue, Feb 28, 2012 at 5:45 PM, John Huss <[email protected]> wrote: >>> This comes from EntityResolver.applyDBLayerDefaults(). The commit where >>> this was introduced (Revision 606720) says: >>> >>> "JPA: adding extra step - connecting reverse relationships on Cayenne end >>> for consistent runtime..." >>> >>> So is it OK to turn this off? Or will things blow up? >>> >>> Thanks, >>> John >>> >>> On Wed, Feb 22, 2012 at 1:44 PM, John Huss <[email protected]> wrote: >>> >>>> When I start up my Cayenne app, I see messages about it adding reverse >>>> relationships in places where I have chosen not to define them in the >>>> DataMap. I'm wondering why it does this and if it is necessary and if it >>>> can be turned off. Here is the message I'm talking about: >>>> >>>> 2012-02-22 19:43:02 EntityResolver [INFO] added runtime complimentary >>>> DbRelationship from Master to Detail >>>> >>>> 2012-02-22 19:43:02 EntityResolver [INFO] added runtime complimentary >>>> ObjRelationship from Master to Detail >>>> >>>> >>>> Thanks, >>>> >>>> John >>>> >
