well, do you commit the database after the first call of assignedTo? I
mean if you call yourEditingContext.saveChanges()
2006/11/13, Calven Eggert <[EMAIL PROTECTED]>:
Hi all,
I have a EOEnterpriseObject, called a Task record and it has a
relationship, called AssignedTo, that connects to another EOEnterprise
record called Identity. In my WO Application, when I assign an Identity to
the Task record thus creating the AssignedTo relationship, it works the
first time, but if I do it again immediately after, it then gives me the
error:
updateValuesInRowDescribedByQualifier --
com.webobjects.jdbcadaptor.JDBCChannel method failed to
update row in database
com.webobjects.eoaccess.EOGeneralAdaptorException:
updateValuesInRowDescribedByQualifier --
com.webobjects.jdbcadaptor.JDBCChannel method failed to
update row in database
at
com.webobjects.eoaccess.EODatabaseContext._exceptionWithDatabaseContextInformationAdded(EODatabaseContext.java:4685)
at
com.webobjects.eoaccess.EODatabaseContext.performChanges(EODatabaseContext.java:6393)
at
com.webobjects.eocontrol.EOObjectStoreCoordinator.saveChangesInEditingContext(EOObjectStoreCoordinator.java:415)
Just recently getting a basic understanding on how WebObjects works and
deals with snapshots, thanks to Chuck Hill's book "Practical WebObjects", I
figured that the snapshot of the Task record, or actually the relationship
AssignedTo, must not be updated after the first assignment is set. After
putting in the line EditingContext.invalidateAllObjects(),
the problem went away. I know this isn't the best way to do this. But I
thought that to-one relationships were suppose to be ok and the to-many
needed to be babysat. I've also tried
setRefreshesRefetchedObjects(True) but this didn't work, I
assume because I'm not actually going to the db after my save for a refetch.
I've also tried setDefaultTimestampLag(2) but that didn't work either.
Could someone please help me understand what is going on here? Suggested
readings would also be greatly appreciated.
Thanks,
Calven
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