These classes can't derive from DataModel. In the real project they're Entities and have their own class hierarchy. Any solution needs to be a separate concern from the entity object model. Based on some examples I saw in my seam-gen code I'm trying something a little different. I'm passing the entity id as a <f:param> in the <s:link> element. This is working on the outermost table but now my inner objects aren't rendering. Here's my code: | <ice:dataTable id="departmentListResults" width="100%" cellspacing="1" | value="#{departmentList.resultList}" | var="dept"> | <ice:column> | <ice:dataTable id="projectListResults" width="100%" cellspacing="1" | value="#{dept.projects}" var="proj"> | <ice:column> | <!-- This is where my s:link and f:param would normally go...if the rendering was working. --> | <ice:outputText value="Nothing here" rendered="#{proj == null}"/> | <ice:outputText value="#{proj.projectId}" rendered="#{proj != null}"/> | </ice:column> | </ice:dataTable> | </ice:column> | <ice:dataTable> | departmentList is the seam-gen EntityQuery object that pulls back a list of Department objects (@Entity). Within each Department is a Set (1-m relationship between Department and Project). I get a javax.faces.el.PropertyNotFoundException on proj.projectId. I can output just "#{proj}" and get something like this: com.foobar.spurs.model.Project@1bf446e, so I know there's a non-null Object there and its type is Project. So why am I getting an exception when I try to access any of Project's properties? (There are full JavaBean getters/setters for each property I'm trying to access thanks to seam-gen.) The strange thing is this rendering was working fine when my objects were trivial (non-Entity) classes, and I could easily access properties from the "inner" list (proj in this example). Many thanks in advance for any ideas! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4019170#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...