Question

The documentation for the ui:repeat tag in JSF 2.0 says you can iterate over a ResultSet but my code:

<ui:repeat value="#{bean.resultSet}" var="row" varStatus="status">
   #{row.string("mySQLColumn")}
</ui:repeat>

produces this error:

javax.faces.FacesException: Iteration start index is greater than the number of available rows.
    at com.sun.faces.facelets.component.UIRepeat.validateIterationControlValues(UIRepeat.java:682)
    at com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:505)
    at com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:974)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1756)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)

Answer 1

Even though it seems to be supported as argument for iteration, it would be best to first transform it to a List and then iterate.

That way you won’t be propagating the database-access technology to the view layer.