[richfaces-issues] [JBoss JIRA] (RF-11382) Datatable and ExtendedDatatable evaluate value attribute even if rendered=false

[Zuzka Krejčová (Commented) (JIRA)]

    [ https://issues.jboss.org/browse/RF-11382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12632396#comment-12632396 ] 

Zuzka Krejčová commented on RF-11382:
-------------------------------------

I don't understand why you assigned it to me - I'm not RF QE and really don't have anything in common with RichFaces as far as I know. Thanks for the trust, but better to give it to someone on the project perhaps?
                
> Datatable and ExtendedDatatable evaluate value attribute even if rendered=false
> -------------------------------------------------------------------------------
>
>                 Key: RF-11382
>                 URL: https://issues.jboss.org/browse/RF-11382
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: component-tables
>    Affects Versions: 4.0.0.Final, 4.1.0.Milestone2
>         Environment: Fedora 15, Glassfish 3.1.1, CDI (Weld)
>            Reporter: Frederick Kämpfer
>            Assignee: Zuzka Krejčová
>             Fix For: 4.2.0.Tracking
>
>
> In Richfaces 4 both datatable and extendedDatatable evaluate the value attribute even when rendered is set to false, even though it is not necessary. This makes it hard to achieve performance by trimming parts of the view tree. The built-in h:dataTable behaves correctly in that case.
> To reproduce simply try this snipplet:
> {code:xml}
> <h:form>
>      <rich:dataTable value="#{myBean.property}" rendered="false">
>       </rich:dataTable>
> </h:form>
> {code}
> Side note: The reason I'm posting this is, that i want to embed a rich:dataTable in a ajax loaded rich:togglePanelItem which is loaded on demand. Probably fixing the "render" problem will also make the dataTable lazy-loadable when switching to the corresponding togglePanelItem.
> I hope this is no duplicate, I only found RichFaces 3 issues mentioning this problem.

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