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.
