Java example source code file (HelloServer.java)

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Java - Java tags/keywords

corba, exception, hello, helloimpl, hellopoa, helloserver, namecomponent, nameservice, namingcontextext, orb, poa, rootpoa, string, util

The HelloServer.java Java example source code

/*
 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import HelloApp.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CORBA.*;
import org.omg.PortableServer.*;
import org.omg.PortableServer.POA;

import java.util.Properties;

class HelloImpl extends HelloPOA {
    private ORB orb;

    public void setORB(ORB orb_val) {
        orb = orb_val;
    }

    // implement sayHello() method
    public String sayHello() {
        return "\nHello world !!\n";
    }

    // implement shutdown() method
    public void shutdown() {
        orb.shutdown(false);
    }
}


public class HelloServer {

    public static void main(String args[]) {
        try{
            // create and initialize the ORB
            ORB orb = ORB.init(args, null);

            // get reference to rootpoa & activate the POAManager
            POA rootpoa = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));
            rootpoa.the_POAManager().activate();

            // create servant and register it with the ORB
            HelloImpl helloImpl = new HelloImpl();
            helloImpl.setORB(orb);

            // get object reference from the servant
            org.omg.CORBA.Object ref = rootpoa.servant_to_reference(helloImpl);
            Hello href = HelloHelper.narrow(ref);

            // get the root naming context
            org.omg.CORBA.Object objRef =
                orb.resolve_initial_references("NameService");
            // Use NamingContextExt which is part of the Interoperable
            // Naming Service (INS) specification.
            NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);

            // bind the Object Reference in Naming
            String name = "Hello";
            NameComponent path[] = ncRef.to_name( name );
            ncRef.rebind(path, href);

            System.out.println("HelloServer ready and waiting ...");

            // wait for invocations from clients
            while (true) {
                orb.run();
            }
        } catch (Exception e) {
            System.out.println("ERROR: " + e);
            e.printStackTrace(System.out);
        }

        System.out.println("HelloServer Exiting ...");

    }
}