Hello everyone,

i've got a problem with some code (mainly copied from the booking example).
I use Jboss AS 4.2.2 with SEAM 2.0.0.
The Booking-Example works fine.

However my own page pr_overview.xhtml:

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml"
 xmlns:a4j="http://richfaces.org/a4j">

 <ui:define name="body">

 <h:messages globalOnly="true" styleClass="message" />
 <br />
 <rich:panel>
 <f:facet name="header">Probandenübersicht</f:facet>
 <rich:panel>
 <h:form id="searchCriteria">
 <h:panelGrid columns="4">
 <h:outputText value="Name: " />
 <h:inputText id="searchStringName"
 value="#{subjectSearch.searchString}" />

 <a4j:commandButton value="Suche" id="findSubjects"
 action="#{subjectSearch.runQuery}" reRender="searchResults" />
 </h:panelGrid>
 </h:form>
 </rich:panel>

with the backing bean:

import java.util.List;

import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Destroy;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.datamodel.DataModel;

import de.itecra.pdb.model.Proband;

@Stateful
@Name("subjectSearch")
@Scope(ScopeType.SESSION)
public class SubjectSearchAction implements SubjectSearch {

 @Logger("SubjectSearch")
 org.jboss.seam.log.Log log;

 @PersistenceContext
 private EntityManager em;

 @DataModel
 private List<Proband> listSubjectsResults;

 /** SEARCH FIELDS */
 private String searchString;

 /** METHODS */
 public void runQuery() {

 listSubjectsResults = em.createQuery("FROM Proband").getResultList();
 log.info("RunQuery");
 }

 /** GETTERS AND SETTERS */
 public String getSearchString() {
 return searchString;
 }

 public void setSearchString(String searchString) {
 this.searchString = searchString;
 }

 /** COMMON METHODS */

 @Remove
 @Destroy
 public void destroy() {
 }

}

throws the exception:

javax.faces.FacesException: javax.el.PropertyNotFoundException: /pr_overview.xhtml @23,48 value="#{subjectSearch.searchString}": Property 'searchString' not found on type org.javassist.tmp.java.lang.Object_$$_javassist_0
at javax.faces.component.UIOutput.getValue(UIOutput.java:176)
at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:189)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:320)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:200)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:836)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:279)
at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:242)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:199)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:194)
at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:199)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:194)
at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)

[...]

However using the runQuery() Method and accesing listSubjectResults works fine:

<a4j:commandButton value="Suche" id="findSubjects"
 action="#{subjectSearch.runQuery}" reRender="searchResults" />

<a4j:outputPanel id="searchResults">
 <rich:dataTable id="subjects" value="#{listSubjectsResults}"
 var="subject" rendered="#{listSubjectsResults.size>0}">
 <rich:column>
 <f:facet name="header">Nachname</f:facet>
 #{subject.nachname}
 </rich:column>
 <rich:column>
 <f:facet name="header">Vorname</f:facet>
 #{subject.vorname}
 </rich:column>
 <rich:column>
 <f:facet name="header">Geburtsdatum</f:facet>
 <h:outputText value="#{subject.geburtsdatum}">
 <s:convertDateTime pattern="DD.MM.yyyy" />
 </h:outputText>
 </rich:column>
 <rich:column>
 <f:facet name="header">Identifikation</f:facet>
 #{subject.code_zahl}
 </rich:column>
 <rich:column>
 <f:facet name="header">Aktion</f:facet>
 <s:link value="Öffnen" id="openSubject" />
 <!--
 <s:link value="Untersuchung" />
 <s:link value="Studie" />
 -->
 </rich:column>
 </rich:dataTable>
 </a4j:outputPanel>

Idea anyone?
Thanks for advice or links.


Timo