when you say the same is not true of filter, are you saying that
Thing.all().filter('value >' 5).get()
will pull Things 1,2,3,4,5(like the offset issue) the records from the
datastore, but just return Things 6 from the query.
this seems wrong to me.
The reason im making sure on this is that my Thing has a large Blob in
it that i really need to make sure is not getting pulled apart from
the ones im displaying at the time. Otherwise i will split up the
model and put an id in the Thing to a new model ThingBlob.
On Oct 13, 5:34 pm, "Marzia Niccolai" <[EMAIL PROTECTED]> wrote:
> Hi,
>
> The same is not true of filter(). Filter will start at the first value
> larger than x, and should be used if you want to paginate your records.
>
> Brett Slatkin's IO talk covers scalable pagination recipes, and I suggest
> checking it
> out:http://sites.google.com/site/io/building-scalable-web-applications-wi...
>
> -Marzia
>
> On Mon, Oct 13, 2008 at 6:24 AM, David Wilson (entertainment cloud) <
>
> [EMAIL PROTECTED]> wrote:
>
> > ok, i wanted to be sure about this, as pulling all the records and
> > just returning one would have been a performance disaster for my app.
>
> > my question was raised because i was a little surprised to read that
> > offset queries still pull all the 'upto' offset out of the store.
>
> > does the same apply to Thing.all().filter('value >' x).get() ?
>
> > and thus is it possible to page without pulling all the previous pages
> > data from the store each time?
>
> > On Oct 13, 1:01 pm, Sylvain <[EMAIL PROTECTED]> wrote:
> > > Only '1'
>
> > >http://code.google.com/appengine/docs/datastore/queryclass.html#Query...
>
> > > On 13 oct, 13:41, "David Wilson (entertainment cloud)"
>
> > > <[EMAIL PROTECTED]> wrote:
> > > > Hi,
>
> > > > class Thing(db.Model):
>
> > > > value = db.IntegerProperty(required=True)
>
> > > > datastore has 10 Things with value 1..10
>
> > > > Question:
>
> > > > How many records does the query Thing.all().order('-value').get() pull
> > > > from the datastore?
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