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https://issues.jboss.org/browse/RF-11382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12632492#comment-12632492
]
Jan Papousek commented on RF-11382:
-----------------------------------
I've tried it in Metamer with with session bean annotated as a ViewScoped.
The getter method:
{code}
public Collection<Object> getEmptyModel() {
setEmptyModelCalled(true);
logger.info("empty model called");
return new ArrayList<Object>();
}
{code}
The page:
{code}
<h:form>
<rich:dataTable id="richDataTable" value="#{richDataTableBean.emptyModel}"
rendered="false" />
</h:form>
<br />
CALLED: <h:outputText id="outputCalled"
value="#{richDataTableBean.emptyModelCalled}" />
{code}
After opening the page, the page shows "CALLED: false", but the message "empty
model called" is logged. So the getter is called, but the variable where I
store the information about calling the getter is reset somehow.
When I use h:dataTable instead of rich:dataTable, the page shows "CALLED:
false" and the message is not logged (getter is not called).
> 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: Jan Papousek
> 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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