Are you using a change notification framework? Take care, Guido
On 11. Jan. 2010, at 04:26 , Gennady Kushnir wrote: > Hello again. > I've got it that I was doing something wrong. I've found and removed > several commandments violations, employed MultiECLockManager for > properly locking everything... but I am still getting these errors! > How could I track where is that violation hidden within over 5000 rows of > code? > > These errors raise without any visible dependencies. > Users report that even when system says that it could not save > something (because of that strange error), actually data is saved and > can be reviewed after logging out and in again. > > I tried to find the source of error adding logging to awakeFromFetch > when snapshot is uninitialized. But this log has never fired yet > whereas I have already seen errors related to empty snapshot of object > of that class... > I am confused now... > > 2009/11/3 Chuck Hill <ch...@global-village.net>: >> Start here: >> http://wiki.objectstyle.org/confluence/display/WO/EOF-Using+EOF-Breaking+EOF >> >> Then >> http://www.google.com/search?q=llegalStateException+rowDiffsForAttributes+snapshot >> >> >> Chuck >> >> >> On Nov 3, 2009, at 2:02 AM, Gennady Kushnir wrote: >> >>> Hello list! >>> I have an occasionally occurring problem which I can not reproduce but >>> regularly meet in usage logs. >>> Editing context fails to save changes and reports: >>> >>> java.lang.IllegalStateException: rowDiffsForAttributes: snapshot in >>> com.webobjects.eoaccess.EODatabaseOperation {_dbSnapshot = {}; ..... } >>> does not contain value for attribute named colorNoWeight with snapshot >>> key: colorNoWeight >>> >>> it also happens for different objects mentioning another attributes, >>> but as I see a common situation is that _dbSnapshot value is empty >>> dictionary so no matter what attribute is mentioned. Why could this >>> happen? >>> Object in question was surely in database, not just created or deleted. >>> >>> Also sometimes I get NullPointerException when accessing attributes >>> described as not null, so it seems like object was not initialized on >>> fetch. >>> >>> May it be because these objects were fetched or created and saved in >>> child editing context and after that used (with >>> EOUtilities.localInstanceOfObject() ) in parent ? >>> >>> Once I got reproducible malfunction working with temporary >>> EOEditingContext. >>> EOUtilities.localInstanceOfObject(ec, this) was returning an objects >>> with all attributes set to null whereas original object was fine and >>> was stored in database even before app launch. >>> >>> try { >>> boolean cache = ec.hasChanges() >>> if(cache) { >>> ec = new EOEditingContext(); >>> ec.lock(); >>> AutoItog ai = >>> (AutoItog)EOUtilities.localInstanceOfObject(ec, this); >>> course = >>> (EduCourse)EOUtilities.localInstanceOfObject(ec, course); >>> result = >>> calculator().collectRelated(course, ai, >>> >>> !namedFlags().flagForKey("runningTotal"),true); >>> } else { >>> ec.lock(); >>> result = >>> calculator().collectRelated(course, this, >>> >>> !namedFlags().flagForKey("runningTotal"),true); >>> } >>> ec.saveChanges(); >>> if(cache) >>> result = >>> EOUtilities.localInstancesOfObjects(editingContext(), result); >>> } catch (RuntimeException e) { >>> logger.log(LogLevel.WARNING,"Error >>> collecting related", new >>> Object[] {this,e}); >>> } finally { >>> ec.unlock(); >>> } >>> _______________________________________________ >>> Do not post admin requests to the list. They will be ignored. >>> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) >>> Help/Unsubscribe/Update your Subscription: >>> >>> http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net >>> >>> This email sent to ch...@global-village.net >> >> -- >> Chuck Hill Senior Consultant / VP Development >> >> Practical WebObjects - for developers who want to increase their overall >> knowledge of WebObjects or who are trying to solve specific problems. >> http://www.global-village.net/products/practical_webobjects >> >> >> >> >> >> >> >> > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/webobjects-dev/guido.neitzer%40gmail.com > > This email sent to guido.neit...@gmail.com -- http://www.event-s.net _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
