Login function with modal panel not proper in seam 2.0.0 B

[thiagu.m]

i am use the modal panel component for login function. It works properly in seam 1.2.1 GA but it gives some problem in seam 2.0.0 BETA1.

1.if i use JSF command button for login it woke properly once, Second time i try to login it not allowed me to login, and also not give any authentication error, and Exception. But in my
Jboss 4.2.0.GA console shows this two lines

20:31:59,359 INFO [Contexts] starting up: org.jboss.seam.security.ide
20:31:59,359 INFO [Contexts] starting up: org.jboss.seam.web.session

2. if i use ajax4jsf command button for login, because i try to show the validation error message on my login modal panel it woke properly once, Second time i try to login it not allowed me to login, i get ?View could not be restored ? reload page? alert on my browser and also i get this Exception on my Jboss 4.2.0.GA console

20:48:38,812 ERROR [ExceptionFilter] handling uncaught exception
 javax.servlet.ServletException: Stack must not be null
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
 icationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
 ilterChain.java:206)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
 .java:83)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.jav
 a:63)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
 .java:69)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:87)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
 .java:69)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:63)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
 .java:69)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:46)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter
 .java:69)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseX
 MLFilter.java:127)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.



---------------------------------and -------------------------------

20:48:38,812 ERROR [ExceptionFilter] exception root cause
java.lang.IllegalArgumentException: Stack must not be null
 at org.jboss.seam.core.ConversationEntry.<init>(ConversationEntry.java:3
9)
 at org.jboss.seam.core.ConversationEntries.createConversationEntry(Conve
rsationEntries.java:53)
 at org.jboss.seam.core.Manager.createConversationEntry(Manager.java:510)

 at org.jboss.seam.core.Manager.beforeRedirect(Manager.java:651)
 at org.jboss.seam.faces.FacesManager.beforeRedirect(FacesManager.java:63
)
 at org.jboss.seam.faces.FacesManager.appendConversationIdFromRedirectFil
ter(FacesManager.java:222)
 at org.jboss.seam.web.RedirectFilter$1.sendRedirect(RedirectFilter.java:
65)
 at com.sun.faces.context.ExternalContextImpl.redirect(ExternalContextImp
l.java:419)
 at org.ajax4jsf.framework.ajax.AjaxViewHandler.restoreView(AjaxViewHandl
er.java:180)
 at org.jboss.seam.jsf.SeamViewHandler.restoreView(SeamViewHandler.java:9
3)
 at com.sun.facelets.FaceletViewHandler.restoreView(FaceletViewHandler.ja
va:316)
 at org.ajax4jsf.framework.ViewHandlerWrapper.restoreView(ViewHandlerWrap
per.java:116)
 at org.ajax4jsf.framework.ajax.AjaxViewHandler.restoreView(AjaxViewHandl

this my view part

<a href="javascript:Richfaces.showModalPanel('mp',{width:450, top:200})">Login</a>

<rich:modalPanel id="mp" minHeight="200" minWidth="450"
 height="300" width="500" zindex="2000">
 <h:form>

 <h:outputLabel for="username">Username</h:outputLabel>
 <h:inputText id="username"
 value="#{identity.username}"/>
 <h:outputLabel for="password">Password</h:outputLabel>
 <h:inputSecret id="password"
 value="#{identity.password}"/>

 <a:commandButton value="Login" action="#{identity.login}"/>


 </h:form>


</rich:modalPanel>

and my session bean is

@Stateful
@Scope(SESSION)
@Name("authenticator")
public class AuthenticatorAction implements Authenticator
{
 @PersistenceContext EntityManager em;

 @In(required=false, scope = SESSION)
 private Tbluser user;

 @In
 private FacesMessages facesMessages;

 public boolean authenticate()
 {
 List results = em.createQuery("select u from Tbluser u where u.siId=#{identity.username} and u.password=#{identity.password}")
 .getResultList();

 if ( results.size()==0 )
 {

 facesMessages.addToControl("password", "Invalid Username or Password");
 return false;
 }
 else
 {

 user = (TblProfiles) results.get(0);
 return true;
 }

 }
 @Destroy @Remove
 public void destroy() {}

}

Any one give me the solution

By
Thiagu.M