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Re: Need some advice on handling EO validation errors
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Re: Need some advice on handling EO validation errors


  • Subject: Re: Need some advice on handling EO validation errors
  • From: Alan Ward <email@hidden>
  • Date: Fri, 7 Dec 2007 09:03:28 -0700


The unsaved objects(s) are still in your EOEditingContext and thus any future attempts to save
will try to save them again (along with any subsequent changes). The approach that you describe
below is not the best one. What you want to do is to catch the exception from ec.saveChanges()
and depending on what caused it either a) fix your code to prevent it happening, b) modify the
EO's in your EC such that they can be saved or c) revert the EC and abandon the unsaved changes.
If you do none of the above and keep trying to save that editingContext then you'll just keep getting
the same error as EOF tries to persist your changes to the database.


Alan

On Dec 7, 2007, at 8:48 AM, Greg Lappen wrote:

Hi all,

I just recently ran into an issue where my application tried to save a new object to the database, the save failed, and every subsequent save failed with the same error. It seems that WebObjects maintains a queue of updates/saves to write to the database, and when one fails, it essentially clogs up the queue because WO keeps trying to save it eveytime someone calls saveChanges() on an editing context. What I'd like to do is set up a global exception handler in my application that runs whenever an exception is not caught by my code, and in that error handler I want to reset the whole EnterpriseObject stack - the cache, the update/save queue, everything - so that other work in the application can continue and not worry about cache corruption or anything like that.

Is this possible to do?  Anyone know how to do it?

Thanks so much for any help.

Greg
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References: 
 >Need some advice on handling EO validation errors (From: Greg Lappen <email@hidden>)

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