I see you are sorting the relationship, but I don’t see how that would be affecting this. I’d expect this to popup in random places rather than being specific to that bit of code. Your original report was from
at com.eldrix.rsdb.model._Patient.encounters(_Patient.java:1361) at com.eldrix.rsdb.model.Patient.activeEncounters(Patient.java:482) at com.eldrix.rsdb.model.Patient.activeEncounters(Patient.java:472) at com.eldrix.rsdb.model.Patient.formsOfClass(Patient.java:653) at com.eldrix.news.components.patients.PatientMedication.prescriptions(PatientMedication.java:47) Which is also sorting the relationship but I’d guess that to be a co-incidence. I don’t think are you going to find the cause in either of these bits of code. Chuck From: Mark Wardle <[email protected]<mailto:[email protected]>> Date: Friday, January 29, 2016 at 1:33 PM To: Chuck Hill <[email protected]<mailto:[email protected]>> Cc: WebObjects-Dev <[email protected]<mailto:[email protected]>> Subject: Re: Odd NPE from deep inside EOF Thanks Chuck. It may be something to do with threading but it isn't very clear to me. I have never used didUpdate() but I might have code using EOAccessXXX and EOControlXxx that conceivably might change something - but mostly read-only. I'll try some logging on that address relationship to see whether I can see any obvious issue. -- Dr. Mark Wardle Consultant Neurologist, Cardiff, UK (Sent from my mobile) On 28 Jan 2016, at 19:03, Chuck Hill <[email protected]<mailto:[email protected]>> wrote: That is nasty. While processing this fetch, a snapshot is going missing. I don’t think we can tell anything else from that stack trace. It is likely that the cause of this missing snapshot is in another concurrently executing thread. And it is likely related to an error in snapshot reference counting. Does your app (or any code in Wonder that it calls) invalidate snapshots? Are you using ERXGenericRecord’s didUpdate() method to make changes and re-save? Is your code calling methods in EOAccess/EOControl that might change snapshots (or fetch or whatever) without locking the OSC? Chuck From: <[email protected]<mailto:[email protected]>> on behalf of Mark Wardle <[email protected]<mailto:[email protected]>> Date: Thursday, January 28, 2016 at 3:04 AM To: WebObjects-Dev <[email protected]<mailto:[email protected]>> Subject: Re: Odd NPE from deep inside EOF Last year, I had an intermittent exception thrown seemingly at random. Something odd is happening from deep within EOF and it isn’t easily reproducible as far as I can tell. I now have the full stack trace. Does this look familiar to anyone? Best wishes, Mark java.lang.NullPointerException at com.webobjects.eocontrol._EOMutableKnownKeyDictionary.<init>(_EOMutableKnownKeyDictionary.java:106) at com.webobjects.eoaccess.EORelationship._foreignKeyForSourceRow(EORelationship.java:1148) at com.webobjects.eoaccess.EODatabaseContext._followToManyRelationshipWithFetchSpecification(EODatabaseContext.java:2497) at com.webobjects.eoaccess.EODatabaseContext._followFetchSpecification(EODatabaseContext.java:2636) at com.webobjects.eoaccess.EODatabaseContext._batchFetchRelationshipForSourceObjectsEditingContext(EODatabaseContext.java:3734) at com.webobjects.eoaccess.EODatabaseContext.batchFetchRelationship(EODatabaseContext.java:3816) at er.extensions.eof.ERXEOAccessUtilities.batchFetchRelationship(ERXEOAccessUtilities.java:1913) at er.extensions.eof.ERXDatabaseContextDelegate.doFetch(ERXDatabaseContextDelegate.java:781) at er.extensions.eof.ERXDatabaseContextDelegate.batchFetchToManyFault(ERXDatabaseContextDelegate.java:669) at er.extensions.eof.ERXDatabaseContextDelegate.databaseContextShouldFetchArrayFault(ERXDatabaseContextDelegate.java:391) at sun.reflect.GeneratedMethodAccessor81.invoke(null:Unknown) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.webobjects.foundation.NSSelector._safeInvokeMethod(NSSelector.java:122) at com.webobjects.foundation._NSDelegate._perform(_NSDelegate.java:223) at com.webobjects.foundation._NSDelegate.perform(_NSDelegate.java:163) at com.webobjects.eoaccess.EODatabaseContext._fireArrayFault(EODatabaseContext.java:4236) at com.webobjects.eoaccess.EOAccessArrayFaultHandler.completeInitializationOfObject(EOAccessArrayFaultHandler.java:77) at com.webobjects.eocontrol._EOCheapCopyMutableArray.willRead(_EOCheapCopyMutableArray.java:39) at com.webobjects.eocontrol._EOCheapCopyMutableArray.count(_EOCheapCopyMutableArray.java:99) at com.webobjects.eocontrol.EOSortOrdering._sortUsingKeyOrderArray(EOSortOrdering.java:185) at com.webobjects.eocontrol.EOSortOrdering.sortedArrayUsingKeyOrderArray(EOSortOrdering.java:249) at com.eldrix.rsdb.model._Patient.addresses(_Patient.java:748) at com.eldrix.rsdb.model.Patient.addressForDate(Patient.java:289) at com.eldrix.rsdb.model.Patient.currentAddress(Patient.java:277) On 31 Mar 2015, at 22:55, Mark Wardle <[email protected]<mailto:[email protected]>> wrote: Thanks Ramsey. Have committed the properties change (yes I did have cleanup=true) so I’ll wait until it happens again! Intermittent and difficult to fathom! Mark On 31 Mar 2015, at 17:31, Ramsey Gurley <[email protected]<mailto:[email protected]>> wrote: er.extensions.stackTrace.cleanup=true
_______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to [email protected]
