I like to use the Seam Manager Component pattern in Seam 2.0.0.GA and provide a list using @Unwrap:

@Name("holidayRequestByApproverList")

public class HolidayRequestByApproverList {

 @Unwrap
 public List<HolidayRequest> getHolidayRequestByApproverList() {

 ...
 return myList;
 }
}

In a datatable I display the list :

<rich:dataTable id="dtHolidayRequestList" var="holidayRequest"
 value="#{holidayRequestByApproverList}"
 rendered="#{not empty holidayRequestByApproverList}">
...
<h:column>
 <f:facet name="header">
 <s:span styleClass="columnHeader">Nr</s:span>
 </f:facet>
 #{holidayRequest.id}
 </h:column>
<h:column>
 <f:facet name="header">Action</f:facet>

 <s:button value="Reject"
 action="#{holidayApprovalAction.reject(holidayRequest)}">
 </s:button>
 </h:column>

But in my action I always get null instead of holidayRequest that I selected in datatable.

@Stateful
@Name("holidayApprovalAction")
@Scope(ScopeType.SESSION)
public class HolidayApprovalActionImpl implements HolidayApprovalAction {

 private static final long serialVersionUID = 6068522266849679060L;


 @PersistenceContext(type = PersistenceContextType.EXTENDED)
 EntityManager entityManager;

 @Begin
 public void reject(HolidayRequest hr) {
 ...
 entityManager.persist(hr);
 }

I read chapter 30.1 of Seam Reference 2.0.0.GA several times and maybe some limitations occur when using JSF but I also tried using facelets and also got 'null' instead of my selected item.

Also in chapter 30.1.1 it is told in a note that you cannot use objects as arguments therefore I also tried using holidayRequest.id as parameter but then I got 0 instead of the id of the selected item.

I used DataModel and DataModelSelection before but then the displayed data in rich table was not refreshed correctly. Therefore I tried to use Unwrap which works perfectly but now I cannot select an item and paa it to my bean.