I shoud like to implement selection from first selectOneMenu, object of which is supplied contains
a list, this is spent with the second selectOneMenu.

The first menu functions and the second not, maybe somebody can help me.

Here is my code:


Component:

<framework:entity-query name="allHer"
 ejbql="select h from Hersteller h"
 order="h.bezeichnung" >
 </framework:entity-query>

View:

<ui:define name="main">
 <s:link value="zurueck" view="/home"/>

 <s:div>
 <a4j:region>
 <s:div id="frm">
 <a4j:form>
 <h:selectOneMenu value="#{hersteller}">
 <s:convertEntity />
 <s:selectItems value="#{allHer.resultList}" var="her" label="#{her.bezeichnung}" noSelectionLabel="Bitte waehlen..." />
 <a4j:support event="onchange" action="#{fahrzeugact.setModel}" reRender="msg,frm1">
 <s:conversationPropagation type="join" /> </a4j:support>
 </h:selectOneMenu>


 </a4j:form>
 </s:div>
 </a4j:region>

 <a4j:region>
 <s:div id="frm1">
 <a4j:form>
 <h:selectOneMenu value="#{kmd}" disabled="#{empty hersteller.kfzmodel}">
 <s:convertEntity />
 <s:selectItems value="#{hersteller.kfzmodel}" var="md" label="#{md.bezeichnung}" noSelectionLabel="Bitte waehlen..." />
 <a4j:support event="onchange" action="#{fahrzeugact.setModel1}" reRender="msg">
 <s:conversationPropagation type="join" /> </a4j:support>
 </h:selectOneMenu>
 </a4j:form>
 </s:div>
 </a4j:region>


 <a4j:region>

 <s:div id="msg"><h:messages globalOnly="false"/> </s:div>
 </a4j:region>
 </s:div>
 </ui:define>


Session:


@Name("fahrzeugact")
@Stateful
public class Fahrzeug implements FahrzeugInterface {
 @DataModel
 private List<Hersteller> hrList;

 private List<Hersteller> hrsList;

 @In(required=false)
 private KfzModel kmd;

 @PersistenceContext
 private EntityManager em;

 @In(required=false)
 private Hersteller hersteller;



 @Begin
 public List<Hersteller> getHrsList() {
 return em.createQuery("from Hersteller where akzept = true").getResultList();
 }


 public void setModel(){
 // md
 System.out.println("--------------- " + hersteller.getBezeichnung());
 }

 public void setModel1(){
 // md

 System.out.println("--------------- 1 " + kmd.getBezeichnung());
 }

 @End
 public void reset() {}

 @Destroy
 @Remove
 public void destroy() {}
}

I believe that it is because of different contexts, I must in component.xml defined inquiry to tie, white however not how. And if I define the whole over factories, then over messages on the side one spends: invalid value.

I have the example ?UI? looked at, there am realized it over HomeEntity. How can I realize this completely on source code level, without HomeEntity?


Or think I there in wrong direction?