[jboss-user] [JBoss Seam] - Strange Seam Actor component problem

m.makowski do-not-reply at jboss.com
Tue Jan 16 12:11:10 EST 2007


I have a stateless bean which used an Actor Seam object. The bean is based on similar ones provided in official Seam examples and is rather easy:


  | package pl.ist.bpm.ui.login;
  | 
  | import java.io.Serializable;
  | 
  | import javax.ejb.Stateless;
  | import javax.persistence.EntityManager;
  | import javax.persistence.PersistenceContext;
  | 
  | import org.jboss.seam.ScopeType;
  | import org.jboss.seam.Seam;
  | import org.jboss.seam.annotations.In;
  | import org.jboss.seam.annotations.Name;
  | import org.jboss.seam.annotations.Scope;
  | import org.jboss.seam.contexts.Context;
  | import org.jboss.seam.core.Actor;
  | import org.jboss.seam.core.FacesMessages;
  | 
  | @Stateless
  | @Scope(ScopeType.SESSION)
  | @Name("bpmLogin")
  | public class DBLoginAction 
  |     implements Login,
  |                Serializable
  | {
  |     /**
  | 	 * 
  | 	 */
  | 	private static final long serialVersionUID = 1L;
  | 
  | 	private static final String USER_VAR = "currentUser";
  | 
  |     @PersistenceContext
  |     private EntityManager em;
  | 
  |     @In 
  |     Context sessionContext;
  |     
  |     
  |     @In(create=true)
  |     Actor actor;
  |     
  |     @In(create=true)
  |     FacesMessages facesMessages;
  | 
  |     
  |     String username;
  |     
  |    
  |     String password;
  | 
  |     
  | 
  |     public String getPassword() {
  |         return password;
  |     }
  |     public void setPassword(String password) {
  |         this.password = password;
  |     }
  |     private boolean validateFields()
  |     {
  |     	
  |     	
  |     	if(username == null || username.equals(""))
  |         {            	
  |         	
  |     		facesMessages.addFromResourceBundle("loginUserName", "loginUsernameErrorMessage");
  |     		
  |         }
  |         
  |         if(password == null || password.equals(""))
  |         {            	
  |         	facesMessages.addFromResourceBundle("loginPassword", "loginPasswordErrorMessage");
  |         	
  |         }
  |         if(username == null || username.equals("") || password == null || password.equals(""))
  |         	return false;
  |         return true;
  |     	
  |     }
  |     public String login() {
  |         try {
  | 
  |         	
  |             if(!validateFields())
  |             	return null;
  |         	
  |         	User found =  
  |                 (User) em.createQuery("select u from User u where u.username = :userName and u.password = :password")
  |                 .setParameter("userName", username)
  |                 .setParameter("password", password)
  |                 .getSingleResult();
  |             if(found != null)
  |             {
  |             	sessionContext.set(USER_VAR, found);                
  |             	actor.setId(username);
  |             	System.out.print(actor.getId());
  |             	return "todo";
  |             }
  |             return null;
  |        } catch (Exception e) {
  |             // this message is lost in the session invalidation
  | 
  |         	
  |         	FacesMessages.instance().add("loginErrorPrompt");
  |             Seam.invalidateSession();
  |             return null;
  |         }
  |     }
  | 
  |     public String logout() {
  |     	actor.setId(null);
  |         Seam.invalidateSession();
  |         sessionContext.set(USER_VAR, null);
  |         sessionContext.set("loggedIn", null);
  |         return "logout";
  |     }
  | 
  |     public String getUsername() {
  | 		return username;
  | 	}
  | 	public void setUsername(String username) {
  | 		this.username = username;
  | 	}
  | 
  |     
  | }
  | 

next comes the login page that used that bean:

  | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
  |                       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  | <html 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:visuals="urn:taglib:/WEB-INF/tags"
  | 	xmlns:h="http://java.sun.com/jsf/html">
  | 	<body>
  | 		<ui:composition template="/WEB-INF/templates/nosiderbar.xhtml">
  | 			<ui:param name="titleImage" value="Images/login/title_login.png" />
  | 			<ui:param name="backgroundImage"
  | 				value="Images/login/background_login.png" />
  | 			<ui:define name="header">
  | 				<ui:include src="/WEB-INF/includes/header.xhtml">
  | 				</ui:include>
  | 			</ui:define>
  | 			<ui:define name="body">
  | 				<f:view>
  | 					<h:form>
  | 						<div id="loginPanelPadding">
  | 							<table border="0" align="center">
  | 								<s:validateAll>
  | 									<tr>
  | 										<td colspan="2">
  | 
  | 										</td>
  | 									</tr>
  | 									<tr>
  | 										<td>
  | 
  | 											<h:outputText value="#{messages.loginUsername}" />
  | 										</td>
  | 										<td>
  | 											
  | 										<h:inputText value="#{bpmLogin.username}" id = "loginUserName"/>
  | 											</td>
  | 										<td><span class = "cntError"><h:message for="loginUserName"/></span></td>
  | 									</tr>
  | 									<tr>
  | 										<td >
  | 											<h:outputText value="#{messages.loginPassword}" />
  | 										</td>
  | 										<td>
  | 											<h:inputSecret value="#{bpmLogin.password}" id = "loginPassword"/>
  | 
  | 										</td>
  | 										<td><span class = "cntError"><h:message for="loginPassword"/></span></td>
  | 
  | 									</tr>
  | 									<tr>
  | 										<td colspan="2">
  | 										<h:commandButton action="#{bpmLogin.login}" value="#{messages.loginLogin}"/>
  | 										</td>
  | 									</tr>
  | 								</s:validateAll>
  | 							</table>
  | 						</div>
  | 					</h:form>
  | 				</f:view>
  | 			</ui:define>
  | 		</ui:composition>
  | 	</body>
  | </html>
  | 

while trying to access this page I get following error stack

  | javax.faces.el.EvaluationException: /login.xhtml @36,75 value="#{bpmLogin.username}": Exception getting value of property username of base of type : org.jboss.seam.intercept.Proxy$$EnhancerByCGLIB$$fecf9761
  | 	at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:60)
  | 	at javax.faces.component.UIOutput.getValue(UIOutput.java:77)
  | 	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getStringValue(RendererUtils.java:217)
  | 	at org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.renderInput(HtmlTextRendererBase.java:135)
  | 	at org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.encodeEnd(HtmlTextRendererBase.java:53)
  | 	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
  | 	at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:242)
  | 	at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  | 	at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  | 	at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  | 	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580)
  | 	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.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 	at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
  | 	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)
  | Caused by: javax.faces.el.EvaluationException: Bean: org.jboss.seam.intercept.Proxy$$EnhancerByCGLIB$$fecf9761, property: username
  | 	at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:442)
  | 	at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:82)
  | 	at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141)
  | 	at com.sun.el.parser.AstValue.getValue(AstValue.java:117)
  | 	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
  | 	at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
  | 	at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56)
  | 	... 38 more
  | Caused by: java.lang.reflect.InvocationTargetException
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438)
  | 	... 44 more
  | Caused by: javax.ejb.EJBTransactionRolledbackException: org.jboss.seam.RequiredException: In attribute requires value for component: bpmLogin.actor
  | 	at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:93)
  | 	at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)
  | 	at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:195)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
  | 	at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
  | 	at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
  | 	at $Proxy89.getUsername(Unknown Source)
  | 	at pl.ist.bpm.ui.login.Login$$FastClassByCGLIB$$71f5b82f.invoke(<generated>)
  | 	at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
  | 	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:45)
  | 	at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:73)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:55)
  | 	at org.jboss.seam.interceptors.ExceptionInterceptor.handleExceptions(ExceptionInterceptor.java:38)
  | 	at sun.reflect.GeneratedMethodAccessor108.invoke(Unknown Source)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
  | 	at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
  | 	at org.jboss.seam.interceptors.SynchronizationInterceptor.serialize(SynchronizationInterceptor.java:30)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
  | 	at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
  | 	at org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144)
  | 	at org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
  | 	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
  | 	at org.jboss.seam.intercept.ClientSideInterceptor.interceptInvocation(ClientSideInterceptor.java:82)
  | 	at org.jboss.seam.intercept.ClientSideInterceptor.intercept(ClientSideInterceptor.java:51)
  | 	at org.jboss.seam.intercept.Proxy$$EnhancerByCGLIB$$fecf9761.getUsername(<generated>)
  | 	... 49 more
  | Caused by: org.jboss.seam.RequiredException: In attribute requires value for component: bpmLogin.actor
  | 	at org.jboss.seam.Component.getInstanceToInject(Component.java:1876)
  | 	at org.jboss.seam.Component.injectFields(Component.java:1342)
  | 	at org.jboss.seam.Component.inject(Component.java:1112)
  | 	at org.jboss.seam.interceptors.BijectionInterceptor.bijectTargetComponent(BijectionInterceptor.java:48)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
  | 	at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
  | 	at org.jboss.seam.interceptors.OutcomeInterceptor.interceptOutcome(OutcomeInterceptor.java:23)
  | 	at sun.reflect.GeneratedMethodAccessor110.invoke(Unknown Source)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
  | 	at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
  | 	at org.jboss.seam.interceptors.ConversationInterceptor.endOrBeginLongRunningConversation(ConversationInterceptor.java:51)
  | 	at sun.reflect.GeneratedMethodAccessor109.invoke(Unknown Source)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
  | 	at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
  | 	at org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144)
  | 	at org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
  | 	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
  | 	at org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
  | 	at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:46)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:126)
  | 	... 91 more
  | 

while playing a bit with @In annotation for actor I dicovered that adding (required=false) helps with ridding off the problem, but only for a while. Submiting the form (=calling bpmLogin.login()) prooves that something is wrong again: the actor field is always null so I get NullPointerException.


  | Exception during INVOKE_APPLICATION(5): java.lang.NullPointerException 
  | org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:93)
  | org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)
  | org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:195)
  | org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
  | org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
  | org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
  | org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102)
  | org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
  | org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
  | org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
  | org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
  | $Proxy335.login(Unknown Source)
  | pl.ist.ui.login.Login$$FastClassByCGLIB$$e486f340.invoke(<generated>)
  | net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
  | org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:45)
  | org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:73)
  | org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:55)
  | org.jboss.seam.interceptors.ExceptionInterceptor.handleExceptions(ExceptionInterceptor.java:38)
  | sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | java.lang.reflect.Method.invoke(Method.java:585)
  | org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
  | org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
  | org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
  | org.jboss.seam.interceptors.SynchronizationInterceptor.serialize(SynchronizationInterceptor.java:30)
  | sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | java.lang.reflect.Method.invoke(Method.java:585)
  | org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
  | org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
  | org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
  | org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144)
  | org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
  | org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
  | org.jboss.seam.intercept.ClientSideInterceptor.interceptInvocation(ClientSideInterceptor.java:82)
  | org.jboss.seam.intercept.ClientSideInterceptor.intercept(ClientSideInterceptor.java:51)
  | org.jboss.seam.intercept.Proxy$$EnhancerByCGLIB$$e1466007.login(<generated>)
  | sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | java.lang.reflect.Method.invoke(Method.java:585)
  | com.sun.el.parser.AstValue.invoke(AstValue.java:151)
  | com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
  | com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
  | com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:69)
  | org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
  | javax.faces.component.UICommand.broadcast(UICommand.java:106)
  | javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
  | javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
  | org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
  | org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
  | javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
  | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
  | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
  | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  | org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  | org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
  | org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
  | org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
  | org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  | org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  | org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
  | org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  | org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  | org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
  | org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
  | org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  | org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  | java.lang.Thread.run(Thread.java:595)
  | 

I cannot get it, especially that examples provided in the Seam 1.1.0 package are (erh, almost) the same and work perfectly. Can someone help me?

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