A java RMI-IIOP client with a PRoprietary EJB server.
package com.wiley.compBooks.roman.corba.helloworld; import javax.ejb.*; import javax.naming.*; import javax.rmi.*; import java.util.Properties; import javax.transaction.UserTransaction; /** * This class is an example of client code that invokes * methods on a simple stateless session bean. */ public class RMIClient { public static void main(String[] args) { try { /* * Get System properties for JNDI initialization */ Properties props = System.getProperties(); /* * Use JNDI to look up the home object */ Context ctx = new InitialContext(props); HelloHome home = (HelloHome) javax.rmi.PortableRemoteObject.narrow( ctx.lookup("HelloHome"), HelloHome.class); /* * Use JNDI to look up the JTA * UserTransaction interface */ UserTransaction userTran = (UserTransaction) ctx.lookup("javax.transaction.UserTransaction"); /* * Start the transaction */ userTran.begin(); /* * Use the home object to create the Hello EJB Object */ Hello hello = home.create(); /* * Call the hello() method, and print it */ System.out.println(hello.hello()); /* * Done with EJB Object, so remove it */ hello.remove(); /* * Commit the transaction */ userTran.commit(); } catch (Exception e) { e.printStackTrace(); } } } Example RMI-IIOP EJB client
A CORBA client with a CORBA-based EJB server. package com.wiley.compBooks.roman.corba.helloworld; import java.util.*; import org.omg.CosNaming.*; import org.omg.CosTransactions.*; public class CORBAClient { public static void main(String[] args) throws Exception { /* * Initialize the ORB. * * A more portable way to do this is: * * Properties p = new Properties(); * p.put("org.omg.CORBA.ORBClass", <..ORB class..>); * org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args, p); */ org.omg.CORBA.ORB orb = com.inprise.ejb.Global.orb(); /* * Get a reference to a naming context */ NamingContext context = NamingContextHelper.narrow (orb.resolve_initial_references("NameService")); /* * Look up the home object using COS Naming */ NameComponent[] names = { new NameComponent("HelloHome", "") }; HelloHome helloHome = HelloHomeHelper.narrow (context.resolve(names)); /* * Get the CORBA OTS Current interface for * controlling transactions */ Current currentTX = CurrentHelper.narrow (orb.resolve_initial_references("TransactionCurrent")); /* * Begin the transaction */ currentTX.begin(); /* * Use the home object to create an EJB object */ Hello hello = helloHome.create(); /* * Call a business method */ System.out.println(hello.hello()); /* * Remove the EJB object */ hello.remove(); /* * Commit the transaction */ currentTX.commit(true); } }
