I totally support this improvement +1.
On Mon, Apr 25, 2011 at 12:45 PM, Leonardo Uribe <lu4...@gmail.com> wrote:
> Hi
>
> 2011/4/19 Martin Koci <martin.kocicak.k...@gmail.com>
>
>> Hi,
>>
>> is it possible to introduce performance hints in myfaces-core? Hints
>> similar to javax.faces.component.visit.VisitHint but related to
>> performance improvements. Example:
>>
>> For dataTable like:
>> <a:dataTable
>> <a:column>
>> #{aExpression}
>>
>> it's completely unnecessary to save per-row state. Currently there is no
>> elegant way how to do read-only table (state per-row is always
>> maintained). If user wants (fast) readOnly table, he/she must extend
>> UIData and re-implemenent setRowIndex method. But hint say
>> "org.apache.myfaces.core.UIData.saveRowState"=false can solve it
>> elegantly - if present (in component.getAttributes()) UIData skips
>> row-state-saving and restoring methods entirely.
>>
>>
> Unfortunately, we can't do anything like that on default UIData
> implementation
> (it could breaks backwards behavior). I think we could include a property
> on tomahawk t:dataTable called "readOnly", that just skip all that code
> related to save/restore for rows. That could be better, and it has sense to
> put in tomahawk, because after all that is the right location for extend
> default jsf components.
>
> Anyway, I think it is possible to do some work on UIData to make it perform
> faster and better.
>
>
>> Lifespan of those hints can be request (faceContext.attributes) or view
>> (component.attributes)
>>
>
> I don't think in this case it applies, but any configuration param for a
> view
> should be on a tag like f:view or something similar.
>
> regards,
>
> Leonardo
>
>
>> WDYT?
>>
>> Regards,
>>
>> Kočičák
>>
>>
>> See https://issues.apache.org/jira/browse/MYFACES-3111 too.
>>
>>
>
--
Hazem Ahmed Saleh Ahmed
Author of (The Definitive Guide to Apache MyFaces and Facelets):
http://www.amazon.com/Definitive-Guide-Apache-MyFaces-Facelets/dp/1590597370
http://www.amazon.com/-/e/B002M052KY
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