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Re: Re: Best practice for exporting big data...
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Re: Re: Best practice for exporting big data...


  • Subject: Re: Re: Best practice for exporting big data...
  • From: "John Huss" <email@hidden>
  • Date: Tue, 5 Dec 2006 09:28:33 -0600

Could you give some more info about how you would implement this?
Would you create a new thread/connection every time the report runs
(by putting it in the entity's class objectsForMyReport method) or
would this get too expensive?  If you use a new thread how would you
return the results when the thread finished?

John

On 12/5/06, James Cicenia <email@hidden> wrote:
Ah! Great

Thank you very much.

- James


On Dec 5, 2006, at 6:51 AM, Kieran Kelleher wrote:

> Hi James,
>
> Another thread may help, but for long EOF intensive tasks, a new
> ObjectStoreCoordinator (new db connection) can be better. I have
> some long processes that hammer the db generating report data for
> 10 to 15 seconds and I find this approach works well to not block
> all users of the app. It also is much faster.
>
> // Create a new EOF stack (includes new connection to the db)
> EOObjectStoreCoordinator longTaskCoordinator = new
> EOObjectStoreCoordinator();
>
> // Use the separate EOF stack
> EOEditingContext ec = new EOEditingContext( longTaskCoordinator );
>
> NSArray objects = ec.objectsWithFetchSpec ..... etc.
>
> Cheers, Kieran
>
> On Dec 4, 2006, at 9:53 PM, James Cicenia wrote:
>
>> Hello -
>>
>> I have created a nice custom report generator based upon D2W and
>> it works
>> like a charm except for the occasional bad problem.
>>
>> If a person doesn't filter the selection and pulls all the data
>> with all the attributes
>> it can cause my server to basically deny others.
>>
>> Do I have to put this process in a different thread? Do I have to
>> use a long response
>> page?
>>
>> Thanks
>> James Cicenia
>>
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References: 
 >Best practice for exporting big data... (From: James Cicenia <email@hidden>)
 >Re: Best practice for exporting big data... (From: Kieran Kelleher <email@hidden>)
 >Re: Best practice for exporting big data... (From: James Cicenia <email@hidden>)

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