PropertyNotFoundException, problem with a EL-attribute mapp

[vlaugier]

Hello,

this surely is a very dumb mistake but I cannot find it

I have a very simple entities model : one class Client

In a first time, I am creating the clients (without defining the parentClient attribute) with an autogenerated CRUD form, this works

I then want to list the generated clients in a datatable on an other page but I get the following error when going to the page :

Bean: org.javassist.tmp.java.lang.Object_$$_javassist_79, property: clients
- Stack Trace
javax.el.PropertyNotFoundException: Bean: org.javassist.tmp.java.lang.Object_$$_javassist_79, property: clients
 at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:146)
 at com.sun.el.parser.AstValue.getValue(AstValue.java:125)
 at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:195)
 at com.sun.facelets.el.ELText$ELTextVariable.toString(ELText.java:174)
 at com.sun.facelets.el.ELText$ELTextComposite.toString(ELText.java:115)
 at com.sun.facelets.compiler.CommentInstruction.write(CommentInstruction.java:38)
 at com.sun.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:39)
 at org.ajax4jsf.framework.renderer.RendererBase.renderChild(RendererBase.java:280)
 at org.ajax4jsf.framework.renderer.RendererBase.renderChildren(RendererBase.java:262)
 at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:189)
 at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:184)
 at org.ajax4jsf.framework.renderer.RendererBase.encodeChildren(RendererBase.java:121)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:524)
 at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:244)
 at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
 at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
 at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
 at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
 at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:229)
 at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)

Here is my entityBean :

package portalInterventionPart.model;

import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.GeneratedValue;
import javax.persistence.Table;
import javax.persistence.Version;
import org.hibernate.validator.Length;

@Entity
@Table(name="CLIENT")

public class Client implements Serializable {

 //seam-gen attributes (you should probably edit these)
 private Long id;
 private Integer version;
 private String name;
 private String title;
 private Client parent;

 //add additional entity attributes

 //seam-gen attribute getters/setters with annotations (you probably should edit)

 @Id @GeneratedValue
 public Long getId() {
 return id;
 }

 public void setId(Long id) {
 this.id = id;
 }

 @Version
 public Integer getVersion() {
 return version;
 }

 private void setVersion(Integer version) {
 this.version = version;
 }

 @Length(max=20)
 public String getName() {
 return name;
 }

 public void setName(String name) {
 this.name = name;
 }

 @Length(max=20)
 public String getTitle() {
 return title;
 }

 public void setTitle(String title) {
 this.title = title;
 }

 public Client getParent() {
 return parent;
 }

 public void setParent(Client parent) {
 this.parent = parent;
 }



}

Here is the parentMgr.xhtml :

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<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.ajax4jsf.org/rich"
 xmlns:a="https://ajax4jsf.dev.java.net/ajax"
 template="layout/template.xhtml">

<ui:define name="body">

 <h:messages globalOnly="true" styleClass="message"/>

 <h:form id="parentMgrForm">

 <rich:panel>
 <f:facet name="header">parentMgr</f:facet>

 <h:dataTable value="#{parentMgr.clients}" var="client">
 <h:column>
 #{client.name}
 </h:column>

 </h:dataTable>


 <s:decorate id="valueDecoration" template="layout/edit.xhtml">
 <ui:define name="label">Value</ui:define>
 <h:inputText id="value" required="true"
 value="#{parentMgr.value}"/>
 </s:decorate>

 <div style="clear:both"/>

 </rich:panel>

 <div class="actionButtons">
 <h:commandButton id="parentMgr" value="parentMgr"
 action="#{parentMgr.parentMgr}"/>
 </div>

 </h:form>

</ui:define>

</ui:composition>

And the ParentMgrBean.java

package portalInterventionPart.model;

import java.util.List;
import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Destroy;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.log.Log;
import org.jboss.seam.core.FacesMessages;
import org.hibernate.validator.Length;
import org.jboss.seam.annotations.Scope;

import static org.jboss.seam.ScopeType.SESSION;
import org.jboss.seam.annotations.Create;

@Stateful
@Name("parentMgr")
@Scope(SESSION)

public class ParentMgrBean implements ParentMgr {

 @PersistenceContext
 private EntityManager em;

 @Logger private Log log;

 @In FacesMessages facesMessages;

 //@DataModel
 private List<Client> clients ;

 private String value;

 public void parentMgr()
 {
 //implement your business logic here
 log.info("parentMgr.parentMgr() action called with: #{parentMgr.value}");
 facesMessages.add("parentMgr #{parentMgr.value}");
 }


 //add additional action methods

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

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

 public List<Client> getClients() {
 return clients;
 }

 public void setClients(List<Client> clients) {
 this.clients = clients;
 }

 //@Factory("clients")
 @Create
 public void find(){
 this.clients = em.createQuery("select c from Client c").getResultList();
 }


 @Destroy @Remove
 public void destroy() {}

}

I am using jboss4.0 with ejb3 support and sem 1.2.1


thanks for your help

[goku2]

Maybe you miss the @Name("client") annotation

@Entity
@Table(name="CLIENT")
@Name("client")
public class Client implements Serializable {
....

I look it in a rush, maybe is another thing.

[smithbstl]

Did you remember the getter and setter for parentMgr.clients in your local interface? I see that you were using a DataModel but commented it out. I have done that many times (forgot to add the getter and setter to the interface)

[vlaugier]

I had indeed not specified the getter and the setter in the interface.

It works now


thank you !

[nharrison]

Did you ever solve this issue? I am having a very similar problem with seam-gen.

Thanks.

[nharrison]

Ooops sorry. I saw this post on a different list and the responses were not show. I can see them now... :)