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Re: ERD2W and EOGeneralAdaptorException
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Re: ERD2W and EOGeneralAdaptorException


  • Subject: Re: ERD2W and EOGeneralAdaptorException
  • From: Ramsey Gurley <email@hidden>
  • Date: Mon, 03 Jun 2013 13:19:15 -0700

On Jun 3, 2013, at 12:06 PM, Tim Worman wrote:

> an optimistic locking problem I believe. If I kick a new instance everything is fine.

That sounds like you need to refreshRefetchedObjects on your fetch spec. If you've previously fetched a row, and then another instance changes that same row, then you fetch the row again in the first instance, the snapshot is not refreshed unless you tell it do so explicitly.

With the default false value for refreshRefetchedObjects, you can actually fetch with a qualifier q, and then filter your fetched array with q in memory and get a smaller array of results.

I suggest playing around with the freshness explorer app for a few minutes. I found the results to be eye opening.

https://github.com/nullterminated/ponder/blob/master/ERR2d2w/Support/FreshnessExplorer.zip

Ramsey


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