John Smith created TOMAHAWK-1661:
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Summary: dataTable value evaluated if parent component not
rendered if preserveDataModel is true
Key: TOMAHAWK-1661
URL: https://issues.apache.org/jira/browse/TOMAHAWK-1661
Project: MyFaces Tomahawk
Issue Type: Bug
Affects Versions: 1.1.14
Reporter: John Smith
If a t:dataTable's parent component's rendered attribute evaluates to false,
the dataTable's value attribute is still evaluated if the dataTable has the
preserveDataModel attribute set to true.
While I don't think this strictly violates the spec (it says under 2.2.6: 'If
the isRendered() method of a component returns false, the renderer for that
component must not generate any markup, and none of its facets or children (if
any) should be rendered.'), it is at the very least inconsistent with other JSF
components, which do not evaluate the value if not rendered
Example:
<html xmlns="http://www.w3.org/1999/xhtml";
xmlns:h="http://java.sun.com/jsf/html";
xmlns:t="http://myfaces.apache.org/tomahawk"; >
<h:head />
<h:body>
<h:form>
<h:panelGroup rendered="false">
<t:dataTable value="#{bean.list}" var="list"
preserveDataModel="true" >
<h:column>#{list}</h:column>
</t:dataTable>
</h:panelGroup>
</h:form>
</h:body>
</html>
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@RequestScoped
@ManagedBean
public class Bean {
public List<String> getList(){
throw new RuntimeException("this should not be called");
}
}
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