Why i get null,when i use seam extended EL

[imake]

UserList.xhtml

<rich:dataTable id="userList"                       
    value="#{userList.resultList}"
    var="user"                                          
    rendered="#{not empty userList.resultList}">
    <f:facet name="header">
        <h:outputText value="UserList"/>
        </f:facet>
        <rich:column sortBy="#{user.id}"> 
                <f:facet name="header">
                        <h:outputText value="ID"/>
                </f:facet>
                <h:outputText value="#{user.id}"/>
        </rich:column> 
                
        <rich:column sortBy="#{user.name}"> 
                <f:facet name="header">
                        <h:outputText value="Name"/>
                </f:facet>
                <h:outputText value="#{user.name}"/>
        </rich:column>

        <rich:column>
                <f:facet name="header"></f:facet>
                <s:link view="/#{empty from ? 'User' : from}.xhtml" value="#{empty from ? 'Detail' : 'Select'}" id="user">
                        <f:param name="userId" value="#{user.id}"/>
                </s:link>
        </rich:column>
                
        <rich:column>
                <f:facet name="header"></f:facet>
                <s:link id="deleteUser"      value="Delete" action="#{UserDelete.userDelete(user)}" />
        </rich:column>                    
</rich:dataTable>

UserDeleteAction.java

@Stateless
@Name("UserDelete")
public class UserDeleteAction implements UserDelete {

    @Logger private Log log;

    @In FacesMessages facesMessages;

    public void userDelete(User user) {
                log.info("UserId:" + user.getId());
                log.info("UserName:" + user.getName());        
    }

}

When i click the delete link on UserList.xhtml
I got:

INFO  [UserDeleteAction] UserId:null
INFO  [UserDeleteAction] UserName:null

Why UserDelete.userDelete(user) can work?

[swd847]

s:link does not submit the form,

[imake]

But why in the booking example this code can work:

<h:dataTable id="hotels" value="#{hotels}" var="hot" rendered="#{hotels.rowCount>0}">
          <h:column id="column1">
          <f:facet id="NameFacet"name="header">Name</f:facet>
          #{hot.name}
     </h:column>
     <h:column id="column2">
          <f:facet id="AddressFacet" name="header">Address</f:facet>
          #{hot.address}
     </h:column>
     <h:column id="column3">
          <f:facet id="CityStateFacet" name="header">City, State</f:facet>
          #{hot.city}, #{hot.state}, #{hot.country}
     </h:column> 
     <h:column id="column4">
          <f:facet id="ZipFacet" name="header">Zip</f:facet>
          #{hot.zip}
     </h:column>
     <h:column id="column5">
          <f:facet id="ActionFacet"name="header">Action</f:facet>
          <s:link id="viewHotel" value="View Hotel" action="#{hotelBooking.selectHotel(hot)}"/>
     </h:column>
</h:dataTable>

[magrawa]

Hi,
Did you get the solution for your problem? I am also facing the same problem.
Thanks

[utdrew]

The hotel booking models' backing bean exposes 'hot' via the @DataModelSelection annotation.  For your example, in your 'userList' bean you would ideally want to annotate the value returned by 'userList.resultList' with @DataModel and then have a field private User selectedUser annotated with @DataModelSelection.

ex:

 
  .....
  @DataModel
  private List<User> searchResults;
  @DataModelSelection
  private User selectedUser;
  .....

That should solve your user delete issue.  You should also change 'userList.resultList' to just reference your outjected data model i.e.

<rich:dataTable id="userList"                       
    value="#{searchResults}"
    var="user"                                          
    rendered="#{not empty searchResults}">

When you call

#{UserDelete.userDelete(user)}

seam injects the value of selectedUser into your 'user' variable.

Drew