Hi Aaron, In my case there cannot be a B without an A and viceversa. So I am okay with this behavior.
Regards Ricardo Sent from my iPhone > On Jan 13, 2019, at 12:45 PM, Aaron Rosenzweig <aa...@chatnbike.com> wrote: > > Wait a second… thinking about this more. > > If you are going A -> B where A has a primary key and you have a two one > relationship to B where you “propagate” primary key - this is a very bad > thing!!!!!! > > What it means is the PK of A also points to the PK of B… it will always think > there is a B… so it “has to” make an EO over there. > > You would be better off making a new integer FK on A pointing to B. Do not > propagate primary key. > > AARON ROSENZWEIG / Chat 'n Bike > e: aa...@chatnbike.com t: (301) 956-2319 > > >>> On Jan 13, 2019, at 12:42 PM, Johann Werner <johann.wer...@posteo.de> wrote: >>> >>> >>> >>> Am 13.01.2019 um 18:37 schrieb Ricardo Parada <rpar...@mac.com>: >>> >>> When I create A will it have a B set in the to-one? >> >> I think so. It is a loooong time ago I used key propagation though. >> >>> >>> Ricardo >>> >>>> On Jan 13, 2019, at 12:35 PM, Johann Werner <johann.wer...@posteo.de> >>>> wrote: >>>> >>>> Hi Ricardo, >>>> >>>> don’t fight the system ;-) >>>> >>>> When you have your to-one relationship A -> B with key propagation just >>>> create an instance of A and you automatically have a B in place when you >>>> check the relationship A.toB(). You just have to (re)use the present B >>>> instead of creating and connecting your own B. >>>> >>>> jw >>>> >>>> >>>>> Am 13.01.2019 um 13:07 schrieb Ricardo Parada <rpar...@mac.com>: >>>>> >>>>> Hi Johann, >>>>> >>>>> My workaround is to model the relationship as a to-many propagating the >>>>> primary key. It’s less elegant but at least it works. >>>>> >>>>> Thanks >>>>> Ricardo >>>>> >>>>>> On Jan 13, 2019, at 7:02 AM, Johann Werner <johann.wer...@posteo.de> >>>>>> wrote: >>>>>> >>>>>> Hi Ricardo, >>>>>> >>>>>> when using pk propagation I vaguely remember that EOF is automatically >>>>>> creating an instance of the dependent entity. Thus when you create a >>>>>> second object B and set the relationship to A the auto created object is >>>>>> left without connection. >>>>>> >>>>>> jw >>>>>> >>>>>>> Am 13.01.2019 um 12:44 schrieb Ricardo Parada <rpar...@mac.com>: >>>>>>> >>>>>>> Hi all, >>>>>>> >>>>>>> I have an entity A with a to-one relationship to entity B. >>>>>>> >>>>>>> The relationship is setup in eomodeler to propagate it’s primary key >>>>>>> from A to B. >>>>>>> >>>>>>> I then create A and B, insert into editing context and set the to-one >>>>>>> relationship in A to point to B. When I save changes EOF is trying to >>>>>>> insert TWO instances of B. The second instance of B has NULL in all its >>>>>>> properties: >>>>>>> >>>>>>> INSERT INTO HOSTING_COMPANY(CUSTOMER_ID, name) VALUES (?, ?)" >>>>>>> withBindings: 1:20462(customerID), 2:"test"(name)> >>>>>>> >>>>>>> INSERT INTO HOSTING_COMPANY(CUSTOMER_ID, name) VALUES (NULL, NULL) >>>>>>> >>>>>>> >>>>>>> Is this a know bug? I am using a very old version of Wonder. >>>>>>> >>>>>>> The relationship is also set up to own the destination and Cascade on >>>>>>> Delete. >>>>>>> >>>>>>> Thanks in advance for any help. >>>>>>> >>>>>>> Ricardo >>>>>>> _______________________________________________ >>>>>>> Do not post admin requests to the list. They will be ignored. >>>>>>> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) >>>>>>> Help/Unsubscribe/Update your Subscription: >>>>>>> https://lists.apple.com/mailman/options/webobjects-dev/johann.werner%40posteo.de >>>>>>> >>>>>>> This email sent to johann.wer...@posteo.de >>>>>> >>>>> >>>> >>> >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/webobjects-dev/aaron%40chatnbike.com >> >> This email sent to aa...@chatnbike.com >
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