Fetching to-one-relationship: How to use willRead and willReadRelationship?
Fetching to-one-relationship: How to use willRead and willReadRelationship?
- Subject: Fetching to-one-relationship: How to use willRead and willReadRelationship?
- From: Fred Opims <email@hidden>
- Date: Sun, 26 Jun 2011 20:01:06 -0400
Hi!
I have some problem to a to-one relationship.
I have an Entity with 3 properties ( color, brand, model) and one relationship Responsable,
When i make a fetch, i'm able to access to all propeties, but i can't access to relation responsable.
Here is the code
String imm = vehicule.immatriculation(); //Access OK
String marque = vehicule.marque(); //Access OK
String modele = vehicule.modele(); //Access OK
When i do
Responsable resp = vehicule.responsable(); i have a _objectFaultWithSnapshotRelationshipEditingContext exception.
In the WebObject Entreprise Objects Programming Guide, it is written that the fault is fired when the relationship's data is needed.
But when i do the following, i still have the same _objectFaultWithSnapshotRelationshipEditingContext exception.
String name= vehicule.responsable().name();
String firstname= vehicule.responsable().firstname();
It is also written to call willRead() before accessing to the relationship's data.
So i did:
vehicule.willRead();
String name= vehicule.responsable().name();
String firstname= vehicule.responsable().firstname();
But it doesn't work. Same exception
After that, in Vehicule.java i did the following as suggested in the doc:
public class Vehicule extends _Vehicule {
@SuppressWarnings("unused")
private static Logger log = Logger.getLogger(Vehicule.class);
public com.package.Responsable responsable() {
willRead();
return super.responsable();
}
public static boolean usesDeferredFaultCreation() {
return true;
}
}
I made sure the my model is valid and that data in the database are well set.
Can you tell me please if i'm using willRead the right way? How can i access to this relationship?
Thank you very much!
Fred
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