I am on MySQL 5.0.x I don't use change notification framework. Stack trace of exception says it is raised during ec.saveChanges().
May it be caused by using nested editing contexts? Unfortunately I have no idea how to isolate a problem. I can not even reproduce it. Myself I have only seen it once "in action". Mostly I can only see it in logs. And I can't afford to limit functionality of a working system. Furthermore I assume it is in the most actively employed part of a system. As most errors take place there. But maybe it is only because the majority of saves are performed there... Maybe I could diagnose the problem injecting some testing somewhere? Maybe in editingContext subclass? 2010/1/11 Kieran Kelleher <kieran_li...@mac.com>: > > On Jan 11, 2010, at 1:59 PM, Chuck Hill wrote: > >> On Jan 11, 2010, at 10:33 AM, Kieran Kelleher wrote: >>> >>> On Jan 11, 2010, at 1:03 PM, Chuck Hill wrote: >>>> >>>> On Jan 11, 2010, at 4:26 AM, 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? >>>> >>>> There are many, many ways in which things can be done wrong. I don't >>>> know of any easy way to find the source. If you can isolate and reproduce >>>> the problem in a minimum set of steps, that will reduce the amount of code >>>> you have to look at. >>>> >>>> >>>>> 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. >>>> >>>> Something else is happening in your code then. Perhaps this is not from >>>> a save? Nothing should get written to the database if this happens during >>>> a >>>> saveChanges. Maybe this is happening in your app just after saveChanges()? >>> >>> Hmmm ....... half-saving transactions is a common problem when you don't >>> use a transactional database and no "transaction rollback" is available when >>> ec fails during a save. What database engine are you using? >> >> >> Now who would use a squirrelly mock database like that?!!? > > > Someone who acquires a Ferrari and drives it in first gear because they have > never used a "stick-shift" car before! :-P > > >> >> :-P >> >> Chuck >> >> -- >> 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
