Lists

Terms and Conditions
Lists hosted on this site
Email the Postmaster
Tips for posting to public mailing lists

CoreData and pre-fetching/batch-faulting

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

CoreData and pre-fetching/batch-faulting

Subject: CoreData and pre-fetching/batch-faulting
From: Frank Illenberger <email@hidden>
Date: Wed, 6 Jul 2005 09:14:08 +0200

Hi,

I am developing a CoreData application in which I have to use the SQL file format. It implements a big tree structure. The problem is, that because of this tree structure, CoreData performs tons of unnecessary fetches for firing all the faults for the tree relationships. Is there any recommended way for a developer to implement a kind of pre-fetching/batch-faulting scheme that can reduce the number of needed fetches?

Because of the sheer number of fetches, the opening of one of my sql- based files containing about 200 objects from an AFP server via AirportExpress takes about 10 seconds compared to half a second when using the XML format. Sadly, the XML format is not an option for me.

I read the FAQ in which it is said that CoreData in contrast to EOF does not support pre-fetching. But I wonder if I could be able to nevertheless reduce the number of fetches somehow.


Frank


_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


Follow-Ups:

Re: CoreData and pre-fetching/batch-faulting
From: mmalcolm crawford <email@hidden>


Prev by Date:
pdfkit

Next by Date:
Re: outlineView:writeItems Mystery

Previous by thread:
Re: pdfkit

Next by thread:
Re: CoreData and pre-fetching/batch-faulting

Index(es):

Date
Thread