Using JPADataModel

http://richfaces-showcase.appspot.com/richfaces/component-sample.jsf?demo=dataTable&sample=arrangeableModel&skin=blueSky'

How can I sort and filter a nested entity property?  What changesd do I have to make to the example to sort and filter by the name of

the engine in the following snippet?

        <rich:column sortBy="#{job.engine.name}" filterBy="#{job.engine.name}">

            <f:facet name="header">

                <h:outputText value="Name" />

            </f:facet>

            <h:outputText value="#{job.engine.name}" />

        </rich:column>

@Entity

public class Job implements Serializable {

  @Id @GeneratedValue

  private Long id;

  private Engine engine;

...

}

@Entity

public class Engine implements Serializable {

  @Id @GeneratedValue

  private Long id;

  private String name;

...

}