RE: EOF inserts PK automatically
RE: EOF inserts PK automatically
- Subject: RE: EOF inserts PK automatically
- From: <email@hidden>
- Date: Wed, 3 Nov 2004 17:09:10 +0100
- Thread-topic: EOF inserts PK automatically
Sako
That
would be aganst the very nature of WebObjects. EOF references objects internally
using a global ID which is based on the primary key of the database row matching
the object. If you let your database create the primary key during the
transaction which inserts the new row, WebObjects would not know the generated
key. Moreover with the primary key generated only this late in the process, WebObjects would not know the value of the foreign key to use by other rows to
reference the newly created one.
That
said, WebObjects relies on the database for providing the primary key it used.
It just ask for it earlier than what you are aiming for.
Pierre
Hello,
i create an object and insert it in the ec, and
fire save changes with this simple code
my table has {(id as PK ),(name)}
EOClassDescription classDescriptionAFDetails =
EOClassDescription.classDescriptionForEntityName( "Test2");
EOGenericRecord newTest2Object = (EOGenericRecord)
classDescriptionAFDetails.createInstanceWithEditingContext( null, null);
newTest2Object.takeValueForKey( "name
", "name");
session.defaultEditingContext().insertObject(newTest2Object);
session.defaultEditingContext().saveChanges();
EOF adds the PK automatically.
i use MS-SQL server and it supports adding the PK
also. this mean i just need to add the name with sql like this
INSERT INTO test2 (name) VALUES ("my new name");
what i look for is, i would like to use the feature
from the db. to do that i have to prvent EOF to add the PK
automatically.
do i have chance to do that?
thanks.
sako
**********************************************************************
This email and any files transmitted with it are intended solely for
the use of the individual or entity to whom they are addressed.
If you have received this email in error please notify the sender
of this message. (email@hidden)
This email message has been checked for the presence of computer
viruses; however this protection does not ensure this message is
virus free.
Banque centrale du Luxembourg; Tel ++352-4774-1; http://www.bcl.lu
**********************************************************************
|
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden