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From Malcolm Edgar <>
Subject Re: DataProvider interface
Date Sun, 21 Feb 2010 22:51:21 GMT
+1 sounds like a good idea to me, I would like to see some design
concepts in the WIKI

regards Malcolm Edgar

On Sat, Feb 20, 2010 at 2:23 PM, Bob Schellink <> wrote:
> Hi all,
> Currently the Table, Select and FormTable controls uses normal List objects
> as data providers. While simple end easy to use it does lead to
> inconsistencies, for example Table rowList can be set in onRender but Select
> and FormTable need to be populated before onProcess.
> How about we add a DataProvider interface that can be set for all three
> components in the onInit event. The Control can then call this interface
> when the data is needed. For Select and FormTable this will be during the
> onProcess event, while Table will retrieve its data during rendering.
> In addition this interface can act as a data proxy when paging. For example
> the DataProvider can expose a getSize() method that returns 1000 while in
> reality only 10 objects were retrieved.
> Ajax can also benefit from a performance perspective. Imagine making an Ajax
> request to a Page with multiple Select controls and FormTable. These
> controls will be populated during the onInit event, but they won't be
> processed because Ajax requests should only process the Control that was
> interacted with.
> kind regards
> bob

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