I am hoping this is an idiot simple answer, I've been working on this for days.

I am trying to put up a selectOneMenu dropdown which will be populated in my bean.
This is running under seam 2.2 in jboss 5.1 GA

The xhtml segment is as follows:

               <s:decorate id="monthChoice" template="layout/display.xhtml">
                    <ui:define name="label">Month</ui:define>
                    <h:selectOneMenu id="monthList"  value="#{QueryPerformanceSheet.month}">
                         <f:selectItems value="#{QueryPerformanceSheet.monthList}"></f:selectItems>
                    </h:selectOneMenu>
               </s:decorate>

With this I get the following error:

Expected a child component type of UISelectItem/UISelectItems for component type javax.faces.SelectOne(monthList). Found null.

In the component list is the following:

    <HtmlDecorate element="div" enclose="true" id="monthChoice" rendered="true" template="layout/display.xhtml" transient="false">

        <div class="prop"> <span class="name">

        Month

        </span> <span class="value">

        <HtmlSelectOneMenu disabled="false" id="monthList" immediate="false" localValueSet="false" readonly="false" rendered="true" required="false" transient="false" valid="true" value="">

            <UISelectItems id="j_id29" rendered="true" transient="false"/>

        </HtmlSelectOneMenu>

        </span> </div>

    </HtmlDecorate>

This error occurs right after the getMonth() method of my bean is called, it returns an empty string. I am confused why the control would be driving getMonth when it should be driving setMonth after an item is selected.

The very odd thing is if I change f:selectItems to f:selectItem it actually gets farther, but then complains that it was expecting an item of type SelectItem not a List.

I've seen a gazillion examples that allegedly work just fine and am at a loss why I get that error.

Here is the bean:

mport java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.faces.model.SelectItem;
import javax.persistence.EntityManager;

import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Create;
import org.jboss.seam.annotations.Factory;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.annotations.datamodel.DataModel;
import org.jboss.seam.annotations.datamodel.DataModelSelection;
import org.jboss.seam.log.Log;
import org.jboss.seam.international.StatusMessages;
import org.hibernate.validator.Length;

@Name("QueryPerformanceSheet")

public class QueryPerformanceSheetBean implements QueryPerformanceSheet {
     private static String monthQuery = "select distinct month(date) from Httpquery q";
     @Logger
     private Log log;
     @In
     StatusMessages statusMessages;
     @In
     protected EntityManager entityManager;
     private String value;
     @DataModelSelection
     @Out(required=false)
     private String month = "";
     @DataModel(scope = ScopeType.PAGE)
     private List<SelectItem>monthList;
     public void queryPerformance() {
          monthList = new ArrayList<SelectItem>();
          // implement your business logic here
          log
          .info("QueryPerformanceSheet.queryPerformance() action called with: #{QueryPerformanceSheet.value}");
          statusMessages.add("queryPerformance #{QueryPerformanceSheet.value}");
     }

     // add additional action methods
     public List<SelectItem> getMonthList() {
          return monthList;
     }

     public String getMonth() {
         return month;
     }

     public void setMonth(String month) {
          this.month = month;
     }

     @Length(max = 10)
     public String getValue() {
          return value;
     }

     public void setValue(String value) {
          this.value = value;
     }

     @Remove
     public void destroy() {
     }

     @SuppressWarnings("unchecked")
     @Factory("monthList")
     private void initForm() {
          ArrayList<String> tmp = 
          (ArrayList)entityManager.createQuery(monthQuery).getResultList();
          for (String month:tmp) {
               SelectItem si = new SelectItem(month, month);
               monthList.add(si);
          }
     }

Thanks in advance,

Walt