What quickly comes to mind is
interface datasource {
long count();
// access to lv would allow retrieval of sort order/filter info
list retrieve(int first, int count, ListView lv);
// not sure how these 2 would work of if they are necessary, but
maybe they can help to eliminate index based approach
serializable objecttoid(object obj);
object idtoobject(serializable id);
}
I wish I had enough time right now to create an example and confirm that
something like this would work and/or is adequate, but I have meetings all
day starting in 10 mins ;( maybe tomorrow.
Igor
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> Eelco Hillenius
> Sent: Friday, July 22, 2005 8:45 AM
> To: [email protected]
> Subject: Re: [Wicket-user] Newbie confused about PageableListView
>
> Any concrete proposals?
>
> Eelco
>
>
> Igor Vaynberg wrote:
>
> >You can provide an interface AND easily support collections
> because it
> >is very easy to wrap them. The constructor that takes a List
> interface
> >can wrap that into the internal interface, we shouldn't have
> to do this
> >the other way around.
> >
> >There is also an impedence mismatch with using lists, webapps cannot
> >depend on the index of an object in a list to identify the object.
> >ListView uses the index to identity an element by default
> and you have
> >to override it to make it use the pk. I think this is a very bad
> >practice as this is not an obvious problem. Tapestry
> interfaces provide a reverse lookup method.
> >
> >Igor
> >
> >
> >
>
>
>
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