0 Replies Latest reply on Feb 28, 2009 6:18 AM by Thai Dang Vu

    SimpleSelection doesn't work in Seam

    Thai Dang Vu Apprentice

      I have 2 Seam components:

      @Stateful
      @Name("customerList")
      public class CustomerListImpl implements CustomerList {
       @Logger
       protected Log log;
      
       @PersistenceContext(type= PersistenceContextType.EXTENDED)
       protected EntityManager entityManager;
      
       @DataModel("customers")
       protected List<Customer> customers;
      
       @In(value="customerComponents", required=false)
       protected CustomerComponents customerComponents;
      
       public void viewSelectedRows() {
       Iterator<Object> iterator = customerComponents.getSelection().getKeys();
       while (iterator.hasNext()) {
       Object key = iterator.next();
       customerComponents.getDataTable().setRowKey(key);
       Object customer = customerComponents.getDataTable().getRowData();
       customer = null;
       }
       }
      
       @SuppressWarnings("unchecked")
       public void findCustomers() {
       log.debug(null);
       customers = entityManager.createQuery("select c from Customer c").getResultList();
       }
      
       public void goToPanelBarItem() {
       log.debug(customerComponents.getPanelBar().getSelectedPanel());
       }
      
       @Destroy
       @Remove
       public void destroy() {
       }
      }
      
      @Local
      public interface CustomerList {
       void viewSelectedRows();
       void findCustomers();
       void goToPanelBarItem();
       void destroy();
      }
      
      @Name("customerComponents")
      @Scope(ScopeType.EVENT)
      public class CustomerComponents {
       private HtmlScrollableDataTable dataTable;
       private SimpleSelection selection;
       private HtmlPanelBar panelBar;
       // ... getters & setters
      }
      


      My xhtml
      <a4j:form>
       <rich:scrollableDataTable value="#{customers}" var="customer" width="70px" height="200px"
       binding="#{customerComponents.dataTable}"
       selection="#{customerComponents.selection}">
       <rich:column width="48px">
       <f:facet name="header">ID</f:facet>
       <h:outputText value="#{customer.id}" />
       </rich:column>
       </rich:scrollableDataTable>
      
       <a4j:commandLink value="View Selected Rows" action="#{customerList.viewSelectedRows}"
       reRender="selectedRowBox" />
      
       <rich:panelBar binding="#{customerComponents.panelBar}" width="500">
       <rich:panelBarItem name="barItem1" label="Leverage the whole set of JSF benefits ...">
       <a4j:support event="onenter" action="#{customerList.goToPanelBarItem}"/>
       Ajax4jsf is fully integrated ...
       </rich:panelBarItem>
       <rich:panelBarItem name="barItem2" label="Add AJAX capability...">
       <a4j:support event="onenter" action="#{customerList.goToPanelBarItem}"/>
       The framework is implemented ...
       </rich:panelBarItem>
       </rich:panelBar>
      </a4j:form>
      <h:panelGroup id="selectedRowBox"></h:panelGroup>
      

      When I select some rows and click View Select Rows, the iterator is always empty.

      When I enter a panel bar item, the goToPanelBarItem method prints the panel bar item name (that means the JSF component bindings work).

      Does anybody know why the selection doesn't work?

      Thank you.