-----Original Message-----
From:
[email protected]
[mailto:[email protected]
om] On Behalf Of Mike Schrag
Sent: Tuesday, 15 December 2009 4:25 p.m.
To: Development WebObjects
Subject: Re: NullPointerException in many-many relationship
cross two models
same connection dictionary like "i think they're the same
because the url is the same" or same like "i tested with
.equals(..) at runtime and it returns true thereby proving
they're the same" (technically they don't have to be exactly
.equals, but if they are .equals, they are same-enough)
On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:
HI,
I checked that, they are same connection dictionary,
because this just moral test example.
Not using WOnder,
Thanks
Kevin
-----Original Message-----
From: Chuck Hill [mailto:[email protected]]
Sent: Tuesday, 15 December 2009 4:18 p.m.
To: Ren, Kevin
Cc: [email protected]
Subject: Re: NullPointerException in many-many
relationship cross two
models
Both models need to have the exact (and I _do_ mean _exact_) same
connection dictionary. The dictionaries must be equals().
This is
most easily accomplished by setting the programatically
when the app
loads. Wonder, of course, does this.
Chuck
On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:
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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Practical WebObjects - for developers who want to increase their
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