Re: Weird EOExceptions
Re: Weird EOExceptions
- Subject: Re: Weird EOExceptions
- From: Chuck Hill <email@hidden>
- Date: Wed, 19 Sep 2007 07:51:17 -0700
On Sep 19, 2007, at 12:48 AM, Ute Hoffmann wrote:
Hallo,
I have a app, where I need to delete some data before reading more
data in via an import mechanism.
But my seemingly simple deletes throws weird errors - perhaps
someone knows what is going on here.
Delete jointable from many to many (Objects where the joins point
to are to stay intact):
Exception:
com.webobjects.eoaccess.EOGeneralAdaptorException:
deleteRowDescribedByQualifierEntity --
com.webobjects.jdbcadaptor.JDBCChannel: method deleted 4 rows, it
is only permitted to update 1 row
at
com.webobjects.eoaccess.EODatabaseContext._exceptionWithDatabaseContex
tInformationAdded(EODatabaseContext.java:4686)
Code:
NSArray produktverknuepfungen1 = EOUtilities.objectsForEntityNamed
(ec, "Jgruppeprodukt");
if(produktverknuepfungen1.count()!=0){
for(int m=0; m<produktverknuepfungen1.count(); m++){
Jgruppeprodukt aPZWert = new Jgruppeprodukt();
aPZWert = (Jgruppeprodukt)produktverknuepfungen1.objectAtIndex(m);
ec.deleteObject(aPZWert);
ec.saveChanges();
}
}
Any idea what goes wrong here???
Second case (even more inexplainable to me):
A one- to many. I try to delete the to-many part, I do exactly the
same with same code before I do this and it works. With this
relationship however I get an Exception that the "pzusatzgruppes"
in produkt (Produkt <->>Pzusatzgruppe) is not an array. I checked
and checked and IT SEEMS TO BE AN Array. Nothing I can see
differentiates the relationship and the java-classes belonging to
it from the relationship which works :-(
What is the exact error message? It could be that it is an NSArray
and EOF wants it to be an NSMutableArray. Again, as Ken said, it is
a modeling error or something in your code doing this.
Chuck
Im at a loss. Some ideas?
Can it be that mysql 5 has problems with my JDBC-Driver? Which one
should be used with mysql 5? I need one which is able to handle
international characters ISO-Latin something. This could explain
Exception 1 but not Exception 2??
Thank you for your help,
Regards
Ute
PS. Running WO 5.2.4 on Mac OS X 10.4.10 with Xcode 2.0 -> could
that combination make for the problems?
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