Problems after updating SEAM 2.0 to 2.2

From:

Sascha Effert <fermat@uni-paderborn.de>

Newsgroups:

comp.lang.java.programmer

Date:

Mon, 26 Oct 2009 05:43:53 -0700 (PDT)

Message-ID:

<12a51dc0-81de-47c1-9b81-4ad6b54af184@l35g2000vba.googlegroups.com>

Hello,

I am working on an EAR deployed on JBoss 5.1 (I tried also with 5.0)
and the jboss-seam Framework. I used previously the Version 2.0.1 of
seam and now want to update to 2.2. So I created a new Project with
some EntyBeans and Some SessionBeans available using Bijection. One of
my EntyBeans is the realisation of a User:

<<<<<<<<<<<<<<<<<< Begin: User. java >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
@Entity(name = "User")
@Name("user")
@Scope(ScopeType.SESSION)
@Table(name = "userlogin")
public class User implements java.io.Serializable {
  @Id
  @Column(name = "id", nullable = false, unique = true)
  private Long id;

  @Column(name = "username", nullable = false, unique = true)
  private String name;

  @Column(name = "userpassword", nullable = true)
  private String password;

[+ getter, setter, hashCode, equals and toString, so all I need]
<<<<<<<<<<<<<<<<<< End: User. java >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Then I created a Session Bean to work on the Users. e.g. it can List
up all users:

<<<<<<<<<<<<<<<<<< Begin UserManager.java >>>>>>>>>>>>>>>>>>>>>>>>>>
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import de.upb.vdrive.mda.model.security.User;

@Stateless
@Name("userManager")
public class UserManagerBean implements UserManager {
  @In
  private EntityManager entityManager;

  public List<User> getUsers() {
    return entityManager.createQuery("from User u").getResultList();
  }
}
<<<<<<<<<<<<<<<<<< End UserManager.java >>>>>>>>>>>>>>>>>>>>>>>>>>

At statup of my Application I have to do some initialisation work. It
is no SessionBean, but a simple POJO. I simplified it to just print a
List of all users:

<<<<<<<<<<<<<<<<<< Begin StartupManager.java

import java.util.List;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Observer;
import org.jboss.seam.log.Log;
import de.upb.vdrive.mda.model.security.User;

@Name("bootstrapper")
public class StartUpManager {

  @In(create=true)
  private UserManager userManager;

  @Observer("org.jboss.seam.postInitialization")
  public void initialisation() {
    log.info("Users:");
    for (User user : userManager.getUsers()) {
      log.info("User #0", user.getName());
    }
  }
}
<<<<<<<<<<<<<<<<<< End StartupManager.java >>>>>>>>>>>>>>>>>>>>>>>>>>

This runs very good and I get a List of all users in my database at
startup. For Login I created a LoginBean, which is realized as a
stateless session bean. I set in components.xml the Login as follows:

<<<<<<<<<<<<<<< Begin: Part of components.xml >>>>>>>>>>>>>>>>>>>>>>>>
<persistence:managed-persistence-context name="entityManager" auto-
create="true"
                      persistence-unit-jndi-name="@puJndiName@"/>

   <drools:rule-base name="securityRules">
      <drools:rule-files>
         <value>/security.drl</value>
      </drools:rule-files>
   </drools:rule-base>

   <security:rule-based-permission-resolver security-rules="#
{securityRules}"/>

   <security:identity authenticate-method="#{login.authenticate}"
remember-me="true"/>

   <event type="org.jboss.seam.security.notLoggedIn">
      <action execute="#{redirect.captureCurrentView}"/>
      <action execute="#{identity.tryLogin}"/>
   </event>
   <event type="org.jboss.seam.security.loginSuccessful">
      <action execute="#{redirect.returnToCapturedView}"/>
   </event>
<<<<<<<<<<<<<<< End: Part of components.xml >>>>>>>>>>>>>>>>>>>>>>>>

My LoginBean realized as followed results in an exception:

<<<<<<<<<<<<<<< Begin: LoginBean.java >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
import java.util.List;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.log.Log;
import org.jboss.seam.security.Credentials;
import org.jboss.seam.security.Identity;
import de.upb.vdrive.mda.model.security.User;
import de.upb.vdrive.mda.action.configuration.UserManager;

@Stateless
@Name("login")
// @Scope(ScopeType.SESSION)
public class LoginBean implements Login {
  @Logger
  private Log log;

  @UserManager
  private UserManager userManager;

  @In
  private Identity identity;

  @In
  private Credentials credentials;

  @Out(required = false)
  private User user;

  @SuppressWarnings("unchecked")
  public boolean authenticate() {
    List<User> users = userManager.getUsers();
    [....]
  }
}
<<<<<<<<<<<<<<< Begin: LoginBean.java >>>>>>>>>>>>>>>>>>>>>>>>>>>>>

While in the StatupManager the usage of UserManager was all right, in
the LoginBean I get the following Exception when I reach the the first
usage of userManager:

<<<<<<<<<<<<<<<<Begin: Exception after calling userManager.getUsers in
LoginBean >>>>>>>>>>>>>>
21:26:19,286 WARN [SeamLoginModule] Error invoking login method
javax.el.ELException: javax.ejb.EJBTransactionRolledbackException:
EntityManagerFactory not found in JNDI : java:comp/env/mda2009/pu
    at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:
339)

[....]

Caused by: javax.naming.NameNotFoundException: mda2009 not bound
    at org.jnp.server.NamingServer.getBinding(NamingServer.java:771)

[....]
<<<<<<<<<<<<<<<<End: Exception after calling userManager.getUsers in
LoginBean >>>>>>>>>>>>>>

I get the same if I try to access an EntityManager realized by
<code>@In private EntiyManager entityManager;</code> in LoginBean. But
I can access the Database by using <code>@PersistencyContext private
EntiyManager entityManager;</code>, e.g. the following LoginBean has
no Problems:

<<<<<<<<<<<<<<< Begin: LoginBean.java >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
import java.util.List;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.log.Log;
import org.jboss.seam.security.Credentials;
import org.jboss.seam.security.Identity;
import de.upb.vdrive.mda.model.security.User;

@Stateless
@Name("login")
// @Scope(ScopeType.SESSION)
public class LoginBean implements Login {
  @Logger
  private Log log;

  @PersistencyContext
  private EntityManager entityManager;

  @In
  private Identity identity;

  @In
  private Credentials credentials;

  @Out(required = false)
  private User user;

  @SuppressWarnings("unchecked")
  public boolean authenticate() {
    List<User> users = entityManager.createQuery("from User u where
name=:name").setParameter("name", credentials.getUsername
()).getResultList();
    [....]
  }
}
<<<<<<<<<<<<<<< Begin: LoginBean.java >>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Using this I get a running version. My Problem is, that a login there
has to happen some operations, and I need to access my other Beans
there, so this is not o.k. for me. Can anybody give me a hint, what is
going wrong there?

bests

Sascha Effert