My blog post from way back has an example
of that control (well the files that come with the example)
http://weblogs.macromedia.com/mchotin/archives/2004/03/large_data_sets.cfm
Matt
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Andrew Spaulding
Sent: Thursday, July 07, 2005
10:09 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: using a
repeater with large data sets
Hi Alex,
Yeh I followed your posts on performace with large
data sets, and our
return data from the RemoteObject service is
relatively fast. The
problem lies with the rendering of the results.
For what I'm doing I have found the the Repeater
works better for me
compared to a List with a CellRenderer (and yes I
already have the
repeated contents extracted into a separate mxml
file).
I have gone with Tracy's idea, and am using the 'count' and
'startingIndex' property on the Repeater. I am
currently putting
together a paging component, kind of like how
Google would page its
search results, and am having this control the
Repeater.
Thanks to everyone for there help,
Andrew
www.flexdaddy.info
--- In flexcoders@yahoogroups.com,
Alex Cruikshank <[EMAIL PROTECTED]> wrote:
> Hi Andrew,
> If you're using remoting, I'd make sure your
performance problems
> aren't with the serialization/deserialization
of the results before
> you invest much time in optimizing the
display. I've done some
> research into this
>
(http://www.carbonfive.com/community/archives/2005/07/the_remoting_de.html)
> and the performance of calls returning large
lists can be quite poor
> even when the app server call is
snappy. This is true even when the
> results aren't displayed at all.
>
> I recommend using a List, Horizontal List, or
Tile list with a paging
> data provider for anything that may have over
50 or so items. Once
> you get your data provider working, a
repeater is surprisingly easy to
> convert to a list. You just need to extract
the contents of the
> repeater into a separate mxml (if they're not
already), give the new
> mxml a setValue() method, and set the cell
renderer of the list to the
> new mxml.
>
> Hope this helps,
> Alex
>
>
> On 7/7/05, Andrew Spaulding <[EMAIL PROTECTED]>
wrote:
> > Good idea Trac!
> >
> > I'll use the count and
startingIndex properties to manage the paging
> > locally ;)
> >
> > Kind regards,
> >
> > Andrew Spaulding
> > www.flexdaddy.info
> >
> >
> >
> > --- In flexcoders@yahoogroups.com,
"Tracy Spratt" <[EMAIL PROTECTED]>
wrote:
> > > One possibility with the
repeater is to set the number of items
that are
> > > rendered, then, instead of
scrolling, use page-up, page-down
buttons. A
> > > repeater with around a
hundred moderately complex items is horribly
> > > slow. Show only 10, and
recycleChildren and things improve
> > > dramatically. This is
much simpler to impement that true
server-based
> > > data paging, though Matt C.
has a good discussion of that.
> > >
> > > A cellRenderer in a list is
faster than the repeater, but with 100+
> > > items still takes several
seconds.
> > >
> > > No matter how you do it, it
is the rendering that takes the time.
> > >
> > > Tracy
> > >
> > > -----Original Message-----
> > > From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com]
On
> > > Behalf Of Andrew Spaulding
> > > Sent: Thursday, July 07, 2005
7:36 PM
> > > To: flexcoders@yahoogroups.com
> > > Subject: [flexcoders] using a
repeater with large data sets
> > >
> > > Hi all,
> > >
> > > I am currently using a
repeater to display a list of search
results,
> > > each of them being a
container of sorts with a custom header with
> > > extra controls. Click on the
header open and closes the result,
a long
> > > with a few other bits and
pieces.
> > >
> > > One thing I have found is
that with a larger search result
listing it
> > > takes quite some time to
render the results.
> > >
> > > If I was to manually create
the search result children myself using
> > > createChild etc (rather than
using the repeater) what effects would
> > > this have on my performance
issues? I am not particularly
interested
> > > in paging result sets just
yet, but this would be my next step
if I am
> > > unable to speed things up
otherwise.
> > >
> > > Any thoughts would be
appreciated,
> > >
> > > Cheers,
> > >
> > > Andrew Spaulding
> > > www.flexdaddy.info
> > >
> > >
> > >
> > >
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