Unable to connect corba client to session bean
I need to be able to get CORBA clients talking to Sessions beans.
So I have written a v simple session bean and corba client to test it out, I am using Jacorb for the client also in this test.
Unfortunately I do not seem to be able to call the methods on the remote interface.
I am running JBOSS 3.2.3 and my client is using Jacorb 2.1
The error I am getting from jacorb on my client when I run it, is this...
JacORB V 2.1, www.jacorb.org
(C) Gerald Brose, XTRADYNE Technologies/FU Berlin, 16-Feb-2004
[jacorb.orb.intercept] INFO : InterceptorManager started with 0 SIs, 0 CIs and 1 IORIs
[jacorb.giop] INFO : ClientConnectionManager: created new conn to target 192.168.0.64:3528
[jacorb.iiop.conn] INFO : Connected to 192.168.0.64:3528 from local port 35513
[jacorb.giop] INFO : ClientConnectionManager: found conn to target 192.168.0.64:3528
org.omg.CORBA.BAD_PARAM: Narrow failed
at com.ssl.GoodDayHelper.narrow(GoodDayHelper.java:65)
at callbackClient.main(callbackClient.java:56)
My ejb's do seem to deploy okay and I get the following out of JBOSS when they are deployed
12:51:46,631 INFO [MainDeployer] Starting deployment of package: file:/opt/jboss-3.2.3/server/all/deploy/Hello.jar
12:51:46,993 INFO [EjbModule] Deploying GoodDay
12:51:47,232 INFO [AGoodDay] CORBA interface repository for AGoodDay: IOR:000000000000002149444C3A6F6D672E6F72672F434F5242412F5265706F7369746F72793A312E3000000000000000020000000000000068000102000000000D3139322E3136382E302E363400000DC8000000114A426F73732F49522F41476F6F64446179000000000000020000000000000008000000004A414300000000010000001C00000000000100010000000105010001000101090000000105010001000000010000002C0000000000000001000000010000001C00000000000100010000000105010001000101090000000105010001
12:51:47,237 INFO [AGoodDay] EJBHome reference for AGoodDay:
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
12:51:47,239 INFO [AGoodDay] Home IOR for GoodDay bound to iiop/AGoodDay in JNP naming service
12:51:47,241 INFO [AGoodDay] Home IOR for GoodDay bound to AGoodDay in CORBA naming service
12:51:47,241 INFO [StatelessSessionInstancePool] Started jboss.j2ee:jndiName=AGoodDay,plugin=pool,service=EJB
12:51:47,241 INFO [StatelessSessionContainer] Started jboss.j2ee:jndiName=AGoodDay,service=EJB
12:51:47,242 INFO [EjbModule] Started jboss.j2ee:module=Hello.jar,service=EjbModule
12:51:47,242 INFO [EJBDeployer] Deployed: file:/opt/jboss-3.2.3/server/all/deploy/Hello.jar
12:51:47,248 INFO [MainDeployer] Deployed package: file:/opt/jboss-3.2.3/server/all/deploy/Hello.jar
I have included my code below in case it helps.
My client code is
import org.omg.CORBA.ORB;
import java.util.Properties;
import org.omg.CosNaming.NamingContext;
import org.omg.CosNaming.NamingContextHelper;
import org.omg.CosNaming.NameComponent;
import org.jacorb.orb.util.CorbaLoc;
/**
*
* @author geoff
* @version
*/
public class callbackClient {
/** Creates new callbackClient */
public callbackClient() {
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
try {
// setting system properties is necessary in order to use this ORB in JDK
Properties props = System.getProperties();
props.put("org.omg.CORBA.ORBClass", "org.jacorb.orb.ORB");
props.put("org.omg.CORBA.ORBSingletonClass", "org.jacorb.orb.ORB");
System.setProperties(props);
ORB orb = ORB.init(args, props);
// the client will use Naming Service
org.omg.CORBA.Object ns = orb.resolve_initial_references("NameService");
if (ns == null)
throw new RuntimeException();
NamingContext nc = NamingContextHelper.narrow(ns);
if (nc == null)
throw new RuntimeException();
// resolve names with the Naming Service
String[] client_name_hierarchy = new String [] {"AGoodDay", ""};
NameComponent[] aName = new NameComponent[client_name_hierarchy.length / 2];
for (int i=0; i<(client_name_hierarchy.length / 2); i++) {
aName = new NameComponent();
aName.id = client_name_hierarchy[i*2];
aName.kind = client_name_hierarchy[i*2+1];
}
org.omg.CORBA.Object obj = nc.resolve(aName);
com.ssl.GoodDay srv = com.ssl.GoodDayHelper.narrow(obj);
if (srv == null)
throw new RuntimeException();
srv.requestHello();
System.out.println("AFTER METHOD CALL The method should call and display something in the server output");
// add your client code here
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
the idl is
module com{
module ssl{
interface GoodDay {
public void requestHello();
};
};
};
I have added a jboss.xml file so that it can use IIOP
<?xml version="1.0" encoding="UTF-8"?> <jboss> <enterprise-beans> <session> <ejb-name>GoodDay</ejb-name> <jndi-name>AGoodDay</jndi-name> <configuration-name>Standard Stateless SessionBean</configuration-name> <invoker-bindings> <invoker> <invoker-proxy-binding-name>iiop</invoker-proxy-binding-name> </invoker> </invoker-bindings> </session> </enterprise-beans> </jboss>
and my ejb-jar fil is
<?xml version="1.0"?> <!DOCTYPE ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 1.1//EN' 'http://alpha-am02-mx01/dtd/ejb-jar_1_1.dtd'> <ejb-jar> <enterprise-beans> <session> <ejb-name>GoodDay</ejb-name> <home>com.ssl.GoodDayHome</home> <remote>com.ssl.GoodDay</remote> <ejb-class>com.ssl.GoodDayBean</ejb-class> <session-type>Stateless</session-type> <transaction-type>Container</transaction-type> </session> </enterprise-beans> <assembly-descriptor> <container-transaction> <method> <ejb-name>GoodDay</ejb-name> <method-intf>Remote</method-intf> <method-name>*</method-name> </method> <trans-attribute>Required</trans-attribute> </container-transaction> </assembly-descriptor> </ejb-jar>
My ejb files are
goodDay
package com.ssl;
import java.rmi.RemoteException;
import javax.ejb.EJBObject;
/**
*Created Jun 2 Wed, 2004 11:2:46 AM
*Code generated by the NetBeans for java EJB Module
*@Author geoff
*/
public interface GoodDay extends EJBObject {
public void requestHello() throws RemoteException;
}
GoodDayHome
package com.ssl;
import java.rmi.RemoteException;
import javax.ejb.EJBObject;
/**
*Created Jun 2 Wed, 2004 11:2:46 AM
*Code generated by the NetBeans for java EJB Module
*@Author geoff
*/
public interface GoodDay extends EJBObject {
public void requestHello() throws RemoteException;
}
and my implementation class is
GoodDayBean
package com.ssl;
import javax.ejb.CreateException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import java.rmi.RemoteException;
/**
*Created Jun 2 Wed, 2004 11:2:46 AM
*Code generated by the NetBeans for java EJB Module
*@Author geoff
*/
public class GoodDayBean implements SessionBean {
private SessionContext sessionContext = null;
public void requestHello() throws RemoteException
{
System.out.println("The cleient has finally manged to call this");
//return "Hello, this is a stateless bean access through CORBA";
}
public void ejbCreate() throws CreateException {
}
public void ejbActivate() {
}
public void ejbPassivate() {
}
public void ejbRemove() {
}
public void setSessionContext(SessionContext sessionCtx){
this.sessionContext = sessionCtx;
}
}
