[jboss-user] [JBoss Seam] - PropertyNotFoundException, problem with a EL-attribute mapp
vlaugier
do-not-reply at jboss.com
Tue Sep 18 14:24:07 EDT 2007
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
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