Re: Invalidate vs Refresh vs Refault
Re: Invalidate vs Refresh vs Refault
- Subject: Re: Invalidate vs Refresh vs Refault
- From: Dov Rosenberg <email@hidden>
- Date: Sat, 09 Dec 2006 09:48:29 -0500
- Thread-topic: Invalidate vs Refresh vs Refault
The main reason for my question centers around the fact that in some places
of our app we needed to use JDBC directly for performance reasons (mainly
the bulk operations). Of course when that happens the object graph can get
out of sync with reality.
All editingcontexts (including the shared editing contexts) would need to be
informed. In our case doing an invalidate would probably be pretty costly
since it might get triggered on a frequent basis.
If we wanted to freshen only the current editing context is there a way to
do that?
Dov Rosenberg
On 12/8/06 11:26 PM, "Chuck Hill" <email@hidden> wrote:
> This always makes my head hurt, but I will take a stab at it.
>
> invalidate: tosses the snapshot, affects all editing contexts.
> Forces the data to be refetched from the database.
>
> refault: changes the eo back into a fault in the EC. Depending on
> the EC's fetch timestamp and the snapshot's age, it _may_ go back to
> the database for fresh data when the fault is fired. I think this
> discards any uncommited changes.
>
> refresh: pretty much the same as refault, but merges uncommitted
> changes back into eo.
>
> I have found problems with refault() and refresh() and created my own
> versions that you can find in EOObject in our GVCEOFExtensions
> framework. Sorry, but I don't recall the details right now.
>
> Chuck
>
>
> On Dec 8, 2006, at 2:10 PM, Dov Rosenberg wrote:
>
>> What is the difference between Invalidating an object versus
>> refreshing versus refaulting?
>>
>> It seems that some of the methods call the others. Any commentary
>> on which should be used and when would be appreciated. Thanks in
>> advance
>>
>>
>> --
>> Dov Rosenberg
>> Conviveon/Inquira
>> Knowledge Management Experts
>> http://www.conviveon.com
>> http://www.inquira.com
>>
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Dov Rosenberg
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