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session bean create error() can anyone plzz help me out...  RSS feed

 
Reddy Nabat
Greenhorn
Posts: 8
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HI,
I am trying to write a basic session bean for my application and I am getting a create error. Can anyone plzz help me outt...


here is my session bean class:-


import java.rmi.RemoteException;

import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

import javax.ejb.CreateException;

/**
* XDoclet-based session bean. The class must be declared
* public according to the EJB specification.
*
* To generate the EJB related files to this EJB:
* - Add Standard EJB module to XDoclet project properties
* - Customize XDoclet configuration for your appserver
* - Run XDoclet
*
* Below are the xdoclet-related tags needed for this EJB.
*
* @ejb.bean name="TruckInv"
* display-name="Name for TruckInv"
* description="Description for TruckInv"
* jndi-name="ejb/TruckInv"
* type="Stateless"
* view-type="both"
*/
public class TruckInvBean implements SessionBean {

/** The session context */
private SessionContext context;

public TruckInvBean() {
super();
// TODO Auto-generated constructor stub
}

/**
* Set the associated session context. The container calls this method
* after the instance creation.
*
* The enterprise bean instance should store the reference to the context
* object in an instance variable.
*
* This method is called with no transaction context.
*
* @throws EJBException Thrown if method fails due to system-level error.
*/
public void setSessionContext(SessionContext newContext)
throws EJBException {
context = newContext;
}

public void ejbRemove() throws EJBException, RemoteException {
// TODO Auto-generated method stub

}

public void ejbActivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub

}

public void ejbPassivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub

}

/**
* An ejbCreate method as required by the EJB specification.
*
* The container calls the instance?s <code>ejbCreate</code> method whose
* signature matches the signature of the <code>create</code> method invoked
* by the client. The input parameters sent from the client are passed to
* the <code>ejbCreate</code> method. Each session bean class must have at
* least one <code>ejbCreate</code> method. The number and signatures
* of a session bean?s <code>create</code> methods are specific to each
* session bean class.
*
* @throws CreateException Thrown if method fails due to system-level error.
*
* @ejb.create-method
*
*/
public void ejbCreate() throws CreateException {
int i=1;
}

/**
* An example business method
*
* @ejb.interface-method view-type = "remote"
*
* @throws EJBException Thrown if method fails due to system-level error.
*/
public String Hello() throws EJBException {
String msg="hello";
return msg;
}

}




Here is the home interface

public interface TruckInvHome
extends javax.ejb.EJBHome
{
public static final String COMP_NAME="java:comp/env/ejb/TruckInv";
public static final String JNDI_NAME="ejb/TruckInv";

public dekalb.warehouse.TruckInv create()
throws javax.ejb.CreateException,java.rmi.RemoteException;

}

here is the remote interface

public interface TruckInv
extends javax.ejb.EJBObject
{
/**
* An example business method
* @throws EJBException Thrown if method fails due to system-level error. */
public java.lang.String Hello( )
throws java.rmi.RemoteException;

}

Here is my struts action class which invokes the bean:-

import javax.naming.*;
import dekalb.warehouse.TruckInv;
import dekalb.warehouse.TruckInvHome;

public class AddTruckInventory extends Action
{
public AddTruckInventory()
{
}
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws SQLException, Exception
{
try{
Properties properties = new Properties();
properties.put("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
properties.put("java.naming.factory.url.pkgs","org.jboss.naming rg.jnp.interfaces");
properties.put("java.naming.provider.url", "jnp://localhost:1099");
properties.put("jnp.disableDiscovery", "true");
InitialContext context = new InitialContext(properties);
Object object = context.lookup(TruckInvHome.JNDI_NAME);
servlet.log("line 2");
TruckInvHome TIH = (TruckInvHome)PortableRemoteObject.narrow(object,TruckInvHome.class);
servlet.log("line 3");
TruckInv TI = TIH.create();
servlet.log("Line 4");
String msg=TI.Hello();
request.setAttribute("msg", msg);
}
catch (Exception e)
{
servlet.log("Error"+e);
}
servlet.log("In Add Truck Inventory");
return (mapping.findForward("success"));

}
}

I am getting an error at create line and the error is as follows:-

Errorjava.lang.IllegalStateException: Failed to find method for hash:-6291078846837982252 available={4121927297169232143=public abstract void javax.ejb.EJBHome.remove(javax.ejb.Handle) throws java.rmi.RemoteException,javax.ejb.RemoveException, -7423251857241384719=public abstract void javax.ejb.EJBHome.remove(java.lang.Object) throws java.rmi.RemoteException,javax.ejb.RemoveException, 7415355246179212884=public abstract boolean javax.ejb.EJBObject.isIdentical(javax.ejb.EJBObject) throws java.rmi.RemoteException, 8981122088959051067=public abstract javax.ejb.HomeHandle javax.ejb.EJBHome.getHomeHandle() throws java.rmi.RemoteException, -1225864925247205563=public abstract void javax.ejb.EJBObject.remove() throws java.rmi.RemoteException,javax.ejb.RemoveException, -883843542736932254=public abstract java.lang.Object javax.ejb.EJBObject.getPrimaryKey() throws java.rmi.RemoteException, 4512095171315154818=public abstract javax.ejb.EJBHome javax.ejb.EJBObject.getEJBHome() throws java.rmi.RemoteException, 4881862667832849002=public abstract dekalb.warehouse.TruckInv dekalb.warehouse.TruckInvHome.create() throws javax.ejb.CreateException,java.rmi.RemoteException, 3781219857755091396=public abstract javax.ejb.EJBMetaData javax.ejb.EJBHome.getEJBMetaData() throws java.rmi.RemoteException, -3260590760910195779=public abstract javax.ejb.Handle javax.ejb.EJBObject.getHandle() throws java.rmi.RemoteException, 8594593460157411074=public abstract javax.ejb.EJBObject javax.ejb.Handle.getEJBObject() throws java.rmi.RemoteException, 5741447652058033148=public abstract java.lang.String dekalb.warehouse.TruckInv.Hello() throws java.rmi.RemoteException}
 
Don't get me started about those stupid light bulbs.
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