[jboss-user] [JBoss Seam] - How to select item in DataTable populated with @Unwrap?
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.
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