Adding EJB3 Stateless EJBs to an EJB2.1 jar ClassCastExcepti

[marcusdidiusfalco]

Hallo I am trying to add a Stateless Session Bean (EJB3 with annotations Stateless, Remote, Home ..) to an EJB 2.1 project on JBoss 4.2.3.
The new SSB works well as I have tested with JUnit.
However in the old code I get a ClassCastException at:

SchnittstelleLocalHome lHome = (SchnittstelleLocalHome) ServiceLocator.lookupLocalHome( SchnittstelleLocalHome.JNDI_NAME );

This is caused by adding an @Local Interface to a EJB3 Bean with an abritrary name. I have made sure that there a no Naming conflicts.
Is this a known bug? Any workarounds?

[jaikiran]

Could you please post the entire exception stacktrace and the relevant code from the EJB3 beans? Also please post any ejb-jar.xml or jboss.xml content that might be relevant. How is the application packaged? An EAR or a jar?

[marcusdidiusfalco]

Thank you for your interest

package de.dzbw.dnp.migvis.persistence;

import de.dzbw.dnp.migvis.person.pojo.Bearbeitungverbund;

public interface BearbeitungsverbundDAOI {
 public Bearbeitungverbund getBearbeitungverbund(int bvId);
}


package de.dzbw.dnp.migvis.persistence;

import javax.ejb.Local;

@Local
public interface BearbeitungsverbundDAOLocal extends BearbeitungsverbundDAOI {

}

package de.dzbw.dnp.migvis.persistence;

import javax.ejb.Remote;

@Remote
public interface BearbeitungsverbundDAORemote extends BearbeitungsverbundDAOI {

}

package de.dzbw.dnp.migvis.persistence;


import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Date;

import javax.ejb.Stateless;

import org.apache.log4j.Logger;


import de.dzbw.dnp.migvis.person.pojo.Bearbeitungverbund;
import de.dzbw.dnp.migvis.person.pojo.Person;
import de.dzbw.dnp.migvis.person.pojo.Personengruppenkennzeichen;
import de.dzbw.dnp.migvis.person.pojo.Stellung;
import de.dzbw.dnp.migvis.person.pojo.Vorgang;
import de.dzbw.dnp.migvis.schnittstelle.common.BaseDAO;

@Stateless
public class BearbeitungsverbundDAO extends BaseDAO implements BearbeitungsverbundDAOLocal, BearbeitungsverbundDAORemote{

 private Logger log = Logger.getLogger(this.getClass());

 public Bearbeitungverbund getBearbeitungverbund(int bvId) {
 if (log.isDebugEnabled()) {
 log.debug("Entry getBearbeitungverbund(" + bvId + ")");
 }
 Bearbeitungverbund bearbeitungverbund = null;
 Connection connection = getConnection();
 String sql = "Select P.ID, P.VORNAME, P.NAME, P.STELLBE, P.GEBDATUM, v.id, v.pergrp, v.zda FROM PERSON P INNER JOIN VORGANG V ON p.id = v.personid WHERE P.IDBE= ? ORDER BY STELLBE ASC, p.gebdatum, v.pergrp";
 ResultSet resultSet = null;
 try {
 PreparedStatement statement = connection.prepareStatement(sql);
 statement.setInt(1, bvId);
 resultSet = statement.executeQuery();
 if (resultSet != null) {
 bearbeitungverbund = new Bearbeitungverbund(bvId);
 Person person = null;
 while (resultSet.next()) {
 int id = resultSet.getInt(1);
 //Neue Person
 if (! bearbeitungverbund.containsPerson(id)) {
 String vorname = resultSet.getString(2);
 String name = resultSet.getString(3);
 int stellbe = resultSet.getInt(4);
 Stellung stellung = Stellung.getStellungById(stellbe);
 Date geburtsDatum = resultSet.getDate(5);
 person = new Person(id, vorname, name, geburtsDatum, stellung);
 person.addVorgang(getVorgang(resultSet));
 bearbeitungverbund.addPerson(person);
 }
 //Nur neuer Fall der zur aktuellen Person hinzugefügt wird
 else {
 bearbeitungverbund.getPerson(id).addVorgang(getVorgang(resultSet));
 }

 }
 }
 else {
 log.info("Kein Bearbeitungsverbund für id " + bvId + " gefunden");
 }
 } catch (SQLException e) {
 log.error(e);
 }


 return bearbeitungverbund;
 }

 private Vorgang getVorgang(ResultSet resultSet) throws SQLException {
 int fallId = resultSet.getInt(6);
 int fall = resultSet.getInt(7);
 Personengruppenkennzeichen personengruppenkennzeichen = Personengruppenkennzeichen.getPersonengruppenkennzeichenById(fall);
 Date zdaDatum = resultSet.getDate(8);
 Vorgang vorgang = new Vorgang(fallId, zdaDatum, personengruppenkennzeichen);
 return vorgang;
 }

}

The beans are packaged in a jar.
jboss.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd">

<jboss>

 <security-domain>java:/jaas/MigvisLdapRealm</security-domain>

 <enterprise-beans>

 <!--
 To add beans that you have deployment descriptor info for, add
 a file to your XDoclet merge directory called jboss-beans.xml that contains
 the <session></session>, <entity></entity> and <message-driven></message-driven>
 markup for those beans.
 -->

 <session>
 <ejb-name>dzbw/migvis/Schnittstelle</ejb-name>
 <jndi-name>ejb/dzbw/migvis/Schnittstelle</jndi-name>
 <local-jndi-name>dzbw/migvis/SchnittstelleLocal</local-jndi-name>

 <method-attributes>
 </method-attributes>
 </session>

 <!--
 write a merge file jboss-webservices.ent for webservice-description
 -->

 </enterprise-beans>

 <resource-managers>
 </resource-managers>

 <!--
 | for container settings, you can merge in jboss-container.xml
 | this can contain <invoker-proxy-bindings/> and <container-configurations/>
 -->

</jboss>

ejb-jar.xml:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">

<ejb-jar >

 <description><![CDATA[No Description.]]></description>
 <display-name>Generated by XDoclet</display-name>

 <enterprise-beans>

 <!-- Session Beans -->
 <session >
 <description><![CDATA[Die Klasse <code>SchnittstelleBean</code> dient als Fassadenbean.]]></description>
 <display-name>Schnittstelle</display-name>

 <ejb-name>dzbw/migvis/Schnittstelle</ejb-name>

 <home>de.dzbw.dnp.migvis.schnittstelle.SchnittstelleHome</home>
 <remote>de.dzbw.dnp.migvis.schnittstelle.Schnittstelle</remote>
 <local-home>de.dzbw.dnp.migvis.schnittstelle.SchnittstelleLocalHome</local-home>
 <local>de.dzbw.dnp.migvis.schnittstelle.SchnittstelleLocal</local>
 <ejb-class>de.dzbw.dnp.migvis.schnittstelle.SchnittstelleBean</ejb-class>
 <session-type>Stateless</session-type>
 <transaction-type>Container</transaction-type>

 <env-entry>
 <env-entry-name>DataSourceName</env-entry-name>
 <env-entry-type>java.lang.String</env-entry-type>
 <env-entry-value><![CDATA[java:/migvisDS]]></env-entry-value>
 </env-entry>

 </session>

 <!--
 To add session beans that you have deployment descriptor info for, add
 a file to your XDoclet merge directory called session-beans.xml that contains
 the <session></session> markup for those beans.
 -->

 <!-- Entity Beans -->
 <!--
 To add entity beans that you have deployment descriptor info for, add
 a file to your XDoclet merge directory called entity-beans.xml that contains
 the <entity></entity> markup for those beans.
 -->

 <!-- Message Driven Beans -->
 <!--
 To add message driven beans that you have deployment descriptor info for, add
 a file to your XDoclet merge directory called message-driven-beans.xml that contains
 the <message-driven></message-driven> markup for those beans.
 -->

 </enterprise-beans>

 <!-- Relationships -->

 <!-- Assembly Descriptor -->
 <!--
 To specify your own assembly descriptor info here, add a file to your
 XDoclet merge directory called assembly-descriptor.xml that contains
 the <assembly-descriptor></assembly-descriptor> markup.
 -->

 <assembly-descriptor >
 <!--
 To specify additional security-role elements, add a file in the merge
 directory called ejb-security-roles.xml that contains them.
 -->

 <!-- method permissions -->
 <!--
 To specify additional method-permission elements, add a file in the merge
 directory called ejb-method-permissions.ent that contains them.
 -->
 <method-permission >
 <description><![CDATA[description not supported yet by ejbdoclet]]></description>
 <unchecked/>
 <method >
 <description><![CDATA[description not supported yet by ejbdoclet]]></description>
 <ejb-name>dzbw/migvis/Schnittstelle</ejb-name>
 <method-name>*</method-name>
 </method>
 </method-permission>

 <!-- transactions -->
 <!--
 To specify additional container-transaction elements, add a file in the merge
 directory called ejb-container-transactions.ent that contains them.
 -->
 <container-transaction >
 <method >
 <ejb-name>dzbw/migvis/Schnittstelle</ejb-name>
 <method-name>*</method-name>
 </method>
 <trans-attribute>NotSupported</trans-attribute>
 </container-transaction>

 <!-- finder transactions -->

 <!-- message destinations -->
 <!--
 To specify additional message-destination elements, add a file in the merge
 directory called ejb-message-destinations.ent that contains them.
 -->

 <!-- exclude list -->
 <!--
 To specify an exclude-list element, add a file in the merge directory
 called ejb-exclude-list.xml that contains it.
 -->
 </assembly-descriptor>

</ejb-jar>