Re: To-one relationship with propagating primary key
Re: To-one relationship with propagating primary key
- Subject: Re: To-one relationship with propagating primary key
- From: Ricardo Parada <email@hidden>
- Date: Sun, 13 Jan 2019 07:07:54 -0500
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 <email@hidden> 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 <email@hidden>:
>>
>> 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
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