NullPointerException in many-many relationship cross two models
NullPointerException in many-many relationship cross two models
- Subject: NullPointerException in many-many relationship cross two models
- From: "Ren, Kevin" <email@hidden>
- Date: Tue, 15 Dec 2009 12:30:27 +1300
- Thread-topic: NullPointerException in many-many relationship cross two models
Title: NullPointerException in many-many relationship cross two models
Hi,
There is m-m relationship between A and B entities which are in different models, but in same database. I can create and platen this relationship in EOModler and got AB table as well.
AB is in the same DB and only has compound PK like A_ID and B_ID.
When I tried to do saveChanges got this error
[2009-12-15 12:6:48 NZDT] <WorkerThread0> java.lang.NullPointerException
at com.webobjects.eoaccess.EODatabaseContext.primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:4845)
at com.webobjects.eoaccess.EODatabaseContext.databaseOperationForIntermediateRowFromSourceObject(EODatabaseContext.java:4863)
at com.webobjects.eoaccess.EODatabaseContext.recordInsertForIntermediateRowFromSourceObject(EODatabaseContext.java:4888)
at com.webobjects.eoaccess.EODatabaseContext.relayAttributesInRelationshipSourceObjectDestinationObject(EODatabaseContext.java:4913)
at com.webobjects.eoaccess.EODatabaseContext.relayAttributesInRelationshipSourceObjectDestinationObjects(EODatabaseContext.java:4966)
at com.webobjects.eoaccess.EODatabaseContext.recordChangesInEditingContext(EODatabaseContext.java:6036)
at com.webobjects.eocontrol.EOObjectStoreCoordinator.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
at com.webobjects.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
And I found only updateObjects could has two entities's details and insertedObjects does not print out anything.
Not sure this does not work in across models or something else need setup?
thanks
Xiaowen(Kevin) Ren
Analyst Programmer
Channel Applications, Retail Applications
ANZ National Bank Ltd
Level 6 ASB Tower
2 Hunter Street
PO Box 1791
Wellington
Phone: 04 4365363
Fax: 04 8028696
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