[
https://issues.jboss.org/browse/RF-10154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12574197#comment-12574197
]
Martin Kočí commented on RF-10154:
----------------------------------
Step to reproduce:
<h:form>
<h:commandButton action="#{fasole.visitTree(facesContext, view)}"
value="Visit" />
<h:dataTable value="#{fasole.someItems}" var="zeile">
<h:column>
<h:outputText value="#{zeile}"
rendered="#{fasole.isRendered(zeile)}" />
</h:column>
</h:dataTable>
</h:form>
Fasole.java snippet:
public void visitTree(FacesContext facesContext, UIViewRoot uiViewRoot)
{
VisitContext visitContext =
VisitContext.createVisitContext(facesContext, null,
Sets.newHashSet(VisitHint.SKIP_UNRENDERED));
uiViewRoot.visitTree(visitContext, new VisitCallback() {
@Override
public VisitResult visit(VisitContext context,
UIComponent target) {
return VisitResult.ACCEPT;
}
});
}
public boolean isRendered(Object object) {
if (null == object) {
throw new NullPointerException();
}
return true;
}
1) click Visit -> nothing happens
2) change h:dataTable to r:dataTable or r:extendedDataTable and click Visit ->
NPE
> UIDataAdaptor vs. UIData visitTee small difference
> --------------------------------------------------
>
> Key: RF-10154
> URL: https://issues.jboss.org/browse/RF-10154
> Project: RichFaces
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: component-tables
> Affects Versions: 4.0.0.Milestone5
> Environment: RichFaces 4.0.X trunk, svn rev. 20913
> Reporter: Martin Kočí
> Priority: Minor
>
> <r:extendedDataTable var="zeile">
> <r:column>
> <h:outputText rendered="#{fasole.method(zeile)}"
> </r:column>
> </r:extendedDataTable>
> +
> org.richfaces.component.UIDataAdaptor.visitTree(VisitContext, VisitCallback)
> with VisitHint SKIP_UNRENDERED (in render response phase for example)
> Problem:
> org.richfaces.component.UIDataAdaptor.visitDataChildren(VisitContext,
> VisitCallback, boolean) calls visitComponents(getFacetsAndChildren(),
> visitContext, callback);-> it will visit h:outputText component and test if
> is rendered -> #{fasole.method(zeile)} but no row available -> calls
> fasole.method with null parameter and causes an unexpected NPE
> j.f.c.UIData does not visit column chidren for -1 rowIndex (null rowKey in
> RichFaces), UIData.visitTree JavaDoc says: "Take no action on non-UIColumn
> children".
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