On Mar 4, 2009, at 6:18 AM, Jeff Schmitz wrote:
I am actually using ERXBatchFetchUtilities. e.g.
ERXBatchFetchUtilities.batchFetch(pool.entries(),
Entry.GAME.append(Game.TEAM_POPUPS));
Is that the same thing, or something different?
Different
Is raw row fetching likely to be even faster?
Short answer: probably but you will get data not objects so your code
will need to be adjusted to turn these into objects or to work
directly with raw data.
Wiki....
http://wiki.objectstyle.org/confluence/display/WO/EOF-Using+EOF-Raw+Rows
http://wiki.objectstyle.org/confluence/display/WO/EOF-Using+EOF-EOF+Performance+Tuning
http://wiki.objectstyle.org/confluence/display/WO/EOF-Using+EOF-Memory+Management
http://wiki.objectstyle.org/confluence/display/WO/EOF-Using+EOF-Bulk+Operations
Chuck
On Sunday, March 01, 2009, at 09:55PM, "Lachlan Deck" <[email protected]
> wrote:
On 02/03/2009, at 2:30 PM, Jeff Schmitz wrote:
Maybe it's not as hard as it sounds? Keep in mind that right now
when you say "Load the list of EO's into memory to be processed as
raw-rows with the PK in the raw rows." I have NO idea what you're
talking about.
When you set the flag on the fetch spec to fetch raw rows the pk keys
are included in the results. e.g., if your primary key is called 'id'
then:
rawResultRow.objectForKey("id") will get your pk value.
You can use the editing context (and EOUtilities) to turn the raw row
back into a regular eo.
Now .. you might also want to have a look at Wonder's
ERXFetchSpecificationBatchIterator.
e.g.,
ERXFetchSpecificationBatchIterator iter = new
ERXFetchSpecificationBatchIterator(someRegularFetchSpec, ec,
yourBatchSize);
while (iter.hasNext()) {
NSArray stuff = iter.nextBatch();
// do stuff
ec.saveChanges();
iter.setEditingContext(ERXEC.newEditingContext());
}
with regards,
--
Lachlan Deck
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Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
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