EJBLocalHome java.lang.ClassCastException - $$$view in class name
I am a Jboss beginner. I am trying to upgrade application running on Jboss 4 to Jboss AS 7 (Jboss-as-7.1.1.Final/JDK 7) on Windows.
To start my initial experiment I simply put the .ear to Jboss 7 standalone/deployment folder with minor configuration change to the standalone.xml. The deployment in the server log seems good.
But when I try to instantiate the EJB (Stateless session) bean through jndi. i am getting rather unusual classcast exception. The class of the local home object returned by jndi has an additional $$$view<number> added to it.
Reason:Cannot cast com.cyberasp.common.server.dao.CasDAOHome$$$view97 to com.cyberasp.common.server.dao.CasDAOHome;
Here is the required code/config
interface
public interface CasDAOHome extends EJBLocalHome
{
public CasDAO create() throws CreateException;
}
ejb-jar.xml
<?xml version="1.0"?>
<!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>
<enterprise-beans>
<session>
<ejb-name>casdao</ejb-name>
<local-home>com.cyberasp.common.server.dao.CasDAOHome</local-home>
<local>com.cyberasp.common.server.dao.CasDAO</local>
<ejb-class>com.cyberasp.common.server.dao.CasDAOBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
<assembly-descriptor>
<container-transaction>
<method>
<ejb-name>casdao</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Supports</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
server.log
10:36:48,317 DEBUG [org.jboss.as.ejb3] (MSC service thread 1-5) Installing timer service for component casdao
10:36:48,333 INFO [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-5) JNDI bindings for session bean named casdao in deployment unit subdeployment "CasDao.jar" of deployment "c3unix.ear" are as follows:
java:global/c3unix/CasDao/casdao!com.cyberasp.common.server.dao.CasDAOHome
java:app/CasDao/casdao!com.cyberasp.common.server.dao.CasDAOHome
java:module/casdao!com.cyberasp.common.server.dao.CasDAOHome
java:global/c3unix/CasDao/casdao!com.cyberasp.common.server.dao.CasDAO
java:app/CasDao/casdao!com.cyberasp.common.server.dao.CasDAO
java:module/casdao!com.cyberasp.common.server.dao.CasDAO
servlet code flow
jndiName = "java:app/CasDao/casdao!com.cyberasp.common.server.dao.CasDAOHome";
Hashtable<String, String> jndiProps = new Hashtable<String, String>();
jndiProps.put("java.naming.factory.initial", "org.jboss.as.naming.InitialContextFactory");
ctx = new InitialContext(jndiProps);
Object dao = ctx.lookup(jndiName);
EJBLocalHome daoEjbLocalHome = (EJBLocalHome) dao ;
//daoEjbLocalHome.getClass().getName() -> cast com.cyberasp.common.server.dao.CasDAOHome$$$view97
CasDAOHome casdaoHome = (CasDAOHome)daoEjbLocalHome;
//classcast exception Reason:Cannot cast com.cyberasp.common.server.dao.CasDAOHome$$$view97 to com.cyberasp.common.server.dao.CasDAOHome;
Addition information
For experiment I invoked create method on the daoEjbLocalHome through reflection. The method worked and return a CasDAO$$$view<number> instead of a CasDAO object.
Any suggestion is appreciated.