Using the given bean (that I posted above) in a JSF DataTable raises a warning, too. In my application I use RichFaces:
<rich:extendedDataTable value="#{somethings}" var="sth" rendered="#{not empty somethings}">
<rich:column sortBy="#{sth.id}" label="Some Id">
<f:facet name="header">Some Id</f:facet>
<h:outputText value="#{sth.id}"/>
</rich:column>
</rich:extendedDataTable>
Is this a separate issue or is it tied to [#JBIDE-6176]https://jira.jboss.org/jira/browse/JBIDE-6176?