2 Replies Latest reply on Jan 13, 2006 4:10 AM by cleonhar

    Again: Dublicate ID

    cleonhar
    cleonhar Jan 13, 2006 2:51 AM

      Hi everybody.

      I hope sombody can help me. I have a problem using the @DataModel Annotation. I saw some other people had the same problem and I tried also the suggestions, but nothing worked.

      I use JBoss 4.0.3SP1 and Seam 1.0beta. I tried it with MyFaces 1.0.9 and 1.1.1 and 1.1.2-SNAPSHOT.

      Here is my VIEW:

      
<!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:ui="http://java.sun.com/jsf/facelets"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:f="http://java.sun.com/jsf/core"
 template="../include/template.xhtml">

<!-- content -->
<ui:define name="content">
<div class="section">
 <h1>Benutzer</h1>
</div>
<div class="section">
 <h:outputText value="Keine User gefunden" rendered="#{userlist != null and empty userlist}"/>
 <h:dataTable value="#{userlist}" var="u" rendered="#{not empty userlist}">
 <h:column>
 <f:facet name="header">Name</f:facet>
 #{u.uid}
 </h:column>
 <h:column>
 <f:facet name="header">Action</f:facet>
 <h:commandLink action="#{userservice.delete}">Delete</h:commandLink>
 </h:column>
 </h:dataTable>
</div>
<div class="section">
 <h:form>
 <fieldset class="buttonBox">
 <h:commandButton action="#{userservice.readAll}" value="Show" class="button"/>
 </fieldset>
 </h:form>
</div>
<div class="section">
 <h:form>
 <fieldset class="buttonBox">
 <h:commandButton action="add" value="Add" class="button"/>
 </fieldset>
 </h:form>
</div>
</ui:define>
</ui:composition>


      I use the following Statefull Session Bean: 

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

import java.util.List;

import javax.ejb.Interceptor;
import javax.ejb.Stateful;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.apache.log4j.Logger;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.datamodel.DataModel;
import org.jboss.seam.annotations.datamodel.DataModelSelectionIndex;
import org.jboss.seam.ejb.SeamInterceptor;

import de.mobileview.m4.core.security.User;



@Stateful
@Scope(SESSION)
@Name("userservice")
@Interceptor(SeamInterceptor.class)
public class UserServiceImpl implements UserService {

 @PersistenceContext (unitName="merlix")
 protected EntityManager em;
 private static final Logger log = Logger.getLogger(UserService.class);

 @DataModel
 private List <User> userlist;
 @DataModelSelectionIndex
 private int userIndex;

 @In(required=false)
 @Out(required=false)
 private User user;

 public UserServiceImpl() {
 super();
 log.debug("Constructor called");
 }

 private void setUser()
 {
 user = userlist.get(userIndex);
 log.info( userIndex + "=>" + user);
 }

 public String add() {
 em.persist (user);
 return "success";
 }

 public String update() {
 em.merge(user);
 return "success";
 }

 public String load() {
 //return (User)em.createQuery("from User where uid='"+user.getUid()+"'").getSingleResult();
 user=em.find(User.class,user);
 return "success";
 }

 public String delete(){
 if (userlist==null) return "success";
 setUser();
 em.remove(user);
 return "success";
 }

 public String refresh() {
 em.refresh(user);
 return "success";
 }


 @SuppressWarnings("unchecked")
 public String readAll() {
 userlist=em.createQuery("from User").getResultList();
 return "success";
 }
}


      Here the faces-config: 

      
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE faces-config PUBLIC "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN" "http://java.sun.com/dtd/web-facesconfig_1_1.dtd">

<faces-config>
 <application>
 <locale-config>
 <default-locale>de</default-locale>
 <supported-locale>de</supported-locale>
 <supported-locale>en</supported-locale>
 </locale-config>
 <message-bundle>UserMessages</message-bundle>
 </application>
 <navigation-rule>
 <from-view-id>/user/user.xhtml</from-view-id>
 <navigation-case>
 <from-outcome>success</from-outcome>
 <to-view-id>/user/user.xhtml</to-view-id>
 </navigation-case>
 <navigation-case>
 <from-outcome>add</from-outcome>
 <to-view-id>/user/adduser.xhtml</to-view-id>
 </navigation-case>
 <navigation-case>
 <from-action>#{userservice.delete}</from-action>
 <from-outcome>success</from-outcome>
 <to-view-id>/user/user.xhtml</to-view-id>
 </navigation-case>
 </navigation-rule>
 <navigation-rule>
 <from-view-id>/user/adduser.xhtml</from-view-id>
 <navigation-case>
 <from-outcome>success</from-outcome>
 <to-view-id>/user/edituser.xhtml</to-view-id>
 </navigation-case>
 </navigation-rule>
 <navigation-rule>
 <from-view-id>/user/edituser.xhtml</from-view-id>
 <navigation-case>
 <from-outcome>success</from-outcome>
 <to-view-id>/user/edituser.xhtml</to-view-id>
 </navigation-case>
 </navigation-rule>

 <application>
 <view-handler>com.sun.facelets.FaceletViewHandler</view-handler>
 </application>

 <application>
 <variable-resolver>org.jboss.seam.jsf.SeamVariableResolver</variable-resolver>
 </application>

 <lifecycle>
 <phase-listener>org.jboss.seam.jsf.SeamPhaseListener</phase-listener>
 </lifecycle>

</faces-config>


      Filling the table with "userservice.readAll" works fine. But if I try to use the delete method i get a duplicate id error: 

      java.lang.IllegalStateException: Duplicate id : _tagId2. Child could not be added.
 at javax.faces.component._ComponentChildrenList.checkAddAllowed(_ComponentChildrenList.java:95)
 at javax.faces.component._ComponentChildrenList.add(_ComponentChildrenList.java:76)
 at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:152)
 at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
 at com.sun.facelets.tag.ui.DefineHandler.apply(DefineHandler.java:58)
 at com.sun.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:66)
 at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
 at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49)
 at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
 at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:248)
 at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:294)
 at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:273)
 at com.sun.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:121)
 at com.sun.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:116)
 at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49)
 at com.sun.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:95)
 at com.sun.facelets.FaceletViewHandler.buildView(FaceletViewHandler.java:400)
 at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:434)
 at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:372)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:109)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:292)
 at net.sf.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:108)
 at net.sf.acegisecurity.intercept.web.SecurityEnforcementFilter.doFilter(SecurityEnforcementFilter.java:197)
 at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
 at net.sf.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:324)
 at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
 at net.sf.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:50)
 at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
 at net.sf.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:220)
 at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
 at net.sf.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:173)
 at net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:120)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.valves.FastCommonAccessLogValve.invoke(FastCommonAccessLogValve.java:481)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
 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)



      
<UIViewRoot id="_id182" locale="de" renderKitId="HTML_BASIC" rendered="true" transient="false" viewId="/user/user.xhtml">
<HtmlOutputText escape="true" id="_tagId2" rendered="false" transient="false" value="Keine User gefunden"/>
<HtmlDataTable border="-2147483648" first="0" id="_tagId3" rendered="false" rowIndex="-1" rows="0" transient="false" var="u">
<UIColumn id="_tagId4" rendered="true" transient="false"/>
<UIColumn id="_tagId6" rendered="true" transient="false">
<HtmlCommandLink action="#{userservice.delete}" id="_tagId8" immediate="false" rendered="true" transient="false"/>
</UIColumn>
</HtmlDataTable>
<HtmlForm enctype="application/x-www-form-urlencoded" id="_tagId9" rendered="true" submitted="false" transient="false">
<HtmlCommandButton action="#{userservice.readAll}" disabled="false" id="_tagId10" immediate="false" readonly="false" rendered="true" styleClass="button" transient="false" type="submit" value="Show"/>
</HtmlForm>
<HtmlForm enctype="application/x-www-form-urlencoded" id="_tagId11" rendered="true" submitted="false" transient="false">
<HtmlCommandButton action="add" disabled="false" id="_tagId12" immediate="false" readonly="false" rendered="true" styleClass="button" transient="false" type="submit" value="Add"/>
</HtmlForm>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" SYSTEM "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"/> <title>Merlix 4</title> <link href="../include/css/screen.css" rel="stylesheet" type="text/css"/> </head> <body> <div id="document"> <div id="header"> <div id="status"> Welcome </div> </div> <div id="container"> <div id="sidebar"> <h1>Menu</h1> <a href="../user/user.jsf" shape="rect">User</a> </div> <div id="content">
<div class="section"> <h1>Benutzer</h1> </div> <div class="section">
</UIViewRoot>



      Any ideas?

      Thanks
      Claus


      • 5726 Views
      • Tags:
        • 1. Re: Again: Dublicate ID
          gavin.king
          gavin.king Jan 13, 2006 3:33 AM (in response to cleonhar)

          You need to direct these issues to the MyFaces and/or Facelets forums. Jacob told me this stuff was fixed, but I'm not thoroughly convinced of that.

          This is due to MyFaces bugs, AFAIK.

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          • 2. Re: Again: Dublicate ID
            cleonhar
            cleonhar Jan 13, 2006 4:10 AM (in response to cleonhar)

            Hi,

            I am not sure whether this is a MyFaces problem. I changed the annotations a little bit. Then it works:

            @Stateful
            @Name("userservice")
            @Interceptor(SeamInterceptor.class)
            @Conversational(ifNotBegunOutcome="success")

            I added the Conversational-Annotation and start a transation with the @BEGIN Annotation before readAll. I end the transaction after the delete-Method with @END:

            

@Stateful
@Name("userservice")
@Interceptor(SeamInterceptor.class)
@Conversational(ifNotBegunOutcome="success")
public class UserServiceImpl implements UserService {

 @PersistenceContext (unitName="merlix")
 protected EntityManager em;
 private static final Logger log = Logger.getLogger(UserService.class);

 @DataModel
 private List <User> userlist;
 @DataModelSelectionIndex
 private int userIndex;

 @In(required=false)
 @Out(required=false)
 private User user;

 public UserServiceImpl() {
 super();
 log.debug("Constructor called");
 }

 private void setUser()
 {
 user = userlist.get(userIndex);
 log.info( userIndex + "=>" + user);
 }

 @Begin @End
 public String add() {
 em.persist (user);
 return "success";
 }


 public String update() {
 em.merge(user);
 return "success";
 }


 public String load() {
 //return (User)em.createQuery("from User where uid='"+user.getUid()+"'").getSingleResult();
 user=em.find(User.class,user);
 return "success";
 }

 @End
 public String delete(){
 if (userlist==null) return "success";
 setUser();
 em.remove(user);
 userlist=null;
 return "success";
 }

 public String refresh() {
 em.refresh(user);
 return "success";
 }


 @SuppressWarnings("unchecked")
 @Begin
 public String readAll() {
 userlist=em.createQuery("from User").getResultList();
 return "success";
 }

 @Destroy @Remove
 public void destroy() {
 log.info("destroyed");
 }
}


            But normally I would not use long running transactions in this case. Do I have to? Or is there a better way?

            What happens if I start the transaction before readAll() and the don`t delte anything but leave the page by clicking on link in my menu. Will the transaction be closed automatically?

            Bye
            Claus

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