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From Tarik Cherkovi <cher...@gmail.com>
Subject Re: Commits not visible across contexts in ROP
Date Fri, 13 Feb 2009 17:59:33 GMT
Hi Ari,
How do you force the ROP client to re-fresh its cache when a user double
clicks in onCourse?
Tarik

On Fri, Feb 13, 2009 at 1:29 AM, Aristedes Maniatis <ari@ish.com.au> wrote:

>
> On 13/02/2009, at 4:43 PM, Tarik Cherkovi wrote:
>
>   How are people getting around it if at all?Building
>> event propagation on the server would be great, but as you say, it's non
>> trivial. So in the meantime, I would need to find another solution (other
>> than rewriting my entire swing gui in gwt...)  How would I refresh all
>> caches programmatically?  I ll try that and see what performance looks
>> like...
>>
>
> OK, so if you are running Swing, I guess all your clients are on different
> computers. But are they in the same network? Can the clients talk to each
> other? What security implications does this have?
>
> The main problem you have is knowing when to refresh the data on each
> client. Would a periodic refresh be enough? Or do you need to send an event
> to the client? Can the server contact the client directly or does the client
> need to poll for changes?
>
> What we do in our onCourse application is use a single 'shared' context for
> list views where data being out of date is not quite so critical. Then
> everytime a user double clicks to edit, we fetch fresh data from the server.
> Speed is really not bad at all. We can load a 100,000 record contact list
> (with paging) in 2-3 seconds across the network. Double clicking to edit is
> actually about the same speed, mainly because we fetch a hundred records
> from across a dozen different relations. Prefetching relations and paging
> data for list views are the two main things to keep the performance
> acceptable. You'll want to run 3.0M5 for prefetching to work well in ROP.
>
>
> Ari Maniatis
>
>
>
>
> -------------------------->
> ish
> http://www.ish.com.au
> Level 1, 30 Wilson Street Newtown 2042 Australia
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>
>
>

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