Dmitry,
I've done it from ASP.NET to Flex 2.0 without FDS by caching the Datasets in
memory on the Application Server and sending pages to the UI as requested.
It works very well but it uses a lot of memory and CPU time on the mid-tier
servers and took a bit of code for the server-side threading requirements.
It may be worth trying FDS to save yourself the hassles of this sort of
implementation.
My approach was:
1) Flex UI calls Web Service on server to request the list (dataset).
a) Server spins up background worker thread for list building
b) Server queries database and begins filling dataset on worker
thread
c) primary [request] thread waits for one full page of data to be
filled
2) Once server has filled one full page of data it sends the response to the
client with the first page and a unique "PagingContextID" (guid). The
background thread keeps filling the dataset.
3) UI receives and displays the first page of data
4) When the next page is needed the UI requests it via a 2nd web service
call that contains the unique "PagingContextID" as well as the required page
number.
5) Server retrieves the complete dataset from memory, builds a subset (page)
and sends it back to the client UI.
6) repeat as necessary...
If your using C# for you mid-tier I can send you some sample classes that
can help you get started. Note that I use the term "dataset" loosely, I'm
using custom collections of business objects and not actual ADO.NET
Datasets.
- Kelly
-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On
Behalf Of Dmitry Miller
Sent: Thursday, July 06, 2006 9:11 PM
To: [email protected]
Subject: [flexcoders] Re: RPC result paging - please, help
David,
Thank you for your response. In the article that you have recommended Data
Services were used. I was wondering if there is a way to create my own
implementation of FDS using just RPC
--- In [email protected], "David Mendels" <[EMAIL PROTECTED]>
wrote:
>
> Hello,
>
> Have you read this in the docs: http://snipurl.com/Flex_Paging
>
> -David
> Adobe
>
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Dmitry Miller
> > Sent: Thursday, July 06, 2006 9:56 PM
> > To: [email protected]
> > Subject: [flexcoders] RPC result paging - please, help
> >
> > Is there a way to do paging of RPC results? Is there a good example
> > for that?
> >
> > Thanks,
> >
> > --- Dmitry
> >
> >
> >
> >
> >
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