Trouble calling Stateless Bean

[sjmenden]

I have a page to show the groups in my system. There are a series of links to allow the user to modify the group. I am having trouble implementing the first of those links where the user clicks to edit the group itself.

<h:commandLink value="Edit Information" action="#{editGroup.update}">
 <f:param name="groupId" value="#{groupUsers.group.groupId}"/>
</h:commandLink>

@Name("editGroup")
@Stateless
public class EditGroup implements IEditGroup {

 @RequestParameter
 private Long groupId;

 @Logger
 private Log log;

 private EntityManager em;

 @In(create=false) @Out
 Group group;

 public String update() {
 //Verify groupId is set
 if(groupId == null || groupId.equals("")){return null;}

 Map<String, Object> parameters = new HashMap<String, Object>();

 log.info("\n\nFinding Group with groupId: " + groupId + "\n\n");

 Query query = em.createQuery("from Group group where group.groupId = :groupId");
 parameters.put("groupId", groupId);

 for (Entry <String, Object> param : parameters.entrySet()) {
 query.setParameter( param.getKey(), param.getValue() );
 }
 log.info("Querying for group");
 Group attachedGroup = (Group) query.getSingleResult();
 log.info("Found group object: " + group);

 if(group == null) {
 group = attachedGroup;
 } else {
 log.info("group was not null, attempting to update the attached group");
 attachedGroup.setName(group.getName());
 attachedGroup.setAddress(group.getAddress());
 attachedGroup.setAddress2(group.getAddress2());
 ...
 ...
 ...
 }

 return "editGroup";
 }
}

The error when I click on the link is as follows:

WARNING: Component _id13 just got an automatic id, because there was no id assigned yet. If this component was created dynamically (i.e. not by a JSP tag) you should assign it an explicit static id or assign it the id you get from the createUniqueId from the current UIViewRoot component right after creation!
14:14:09,411 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: Error calling action method of component with id _id1
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
 at javax.faces.component.UICommand.broadcast(UICommand.java:106)
 at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
 at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
 at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:316)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106)

I'm probably doing my @Stateless bean completely against convention, but all I want is to load the group on demand and update on demand, I dont' think it needs to be statefull.

I thought I could just create a @Stateless bean and invoke it from anywhere, but I must be missing something, help is needed with that *something*.

Thanks.

[bfo81]

I don't think this is the complete exception stacktrace. Please show us the whole stuff :).