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Re: JDBCChannel method failed to update
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Re: JDBCChannel method failed to update


  • Subject: Re: JDBCChannel method failed to update
  • From: Anjo Krank <email@hidden>
  • Date: Thu, 27 Jul 2006 07:14:47 +0200


Am 27.07.2006 um 04:31 schrieb Corin Lawson:

I have removed locking from all but the primary key from the entity and this has remedied the problem. But I am concerned that this is not correct and may cause other problems. It is not possible for the this error to be handled by the user because it occurs within a web service operation that does not provide persistent transactions. The problem appears when the user is making a series of modifications to one entity and I think it is due to that each transaction/modification is being handled by a different instance of the application whose object store has become dirty. So in addition to reducing the locking attributes I have ensured that the EOEditingContext refaults before each transaction. (I suspect only one would be necessary.)

There used to be something in Mysql where, when you had a single non- null timestamp column, it would auto-update it on UPDATE.


And there is code in Project Wonder that handles this. (ERXTolerantSaver, ERXEOControlUtilities and ERXEC)

Cheers, Anjo
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References: 
 >JDBCChannel method failed to update (From: Corin Lawson <email@hidden>)
 >Re: JDBCChannel method failed to update (From: shaun <email@hidden>)
 >Re: JDBCChannel method failed to update (From: Corin Lawson <email@hidden>)

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