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

public class tuitionadj extends tuitionadjustorPOA
{
   private int ua, ga;  // amounts to adjust tuitions by

   tuitionadj(int u0, int g0) { super(); ua = u0;  ga = g0; }

   public org.omg.CORBA.Object visitu (undergradHolder u)
    {  undergrad ug = u.value;
       ug.tuition( ug.tuition() + ua );
       if (ug.next() != null) ug.next().accept(this._this());
				  // this is it!
       return ug;
    }
 
   public org.omg.CORBA.Object visitg (gradHolder g)
    {
	grad gg = g.value;
	gg.tuition( gg.tuition() * ga );
	if (gg.next() !=null) gg.next().accept(this._this());
	return gg;
    }

   
  public static void main(String[] args) 
  {
     try
     {
         // initialize local ORB
         ORB myorb = ORB.init(args,null);

         // initialize portable Object Adapter, glue to ORB
         POA rootpoa = (POA)myorb.resolve_initial_references("RootPOA");
         rootpoa.the_POAManager().activate();
         // Register objref with name service (similar to registry)
         org.omg.CORBA.Object nsobjref = 
             myorb.resolve_initial_references("NameService");
         //narrowing = CORBA type casting:
         NamingContext ncref = NamingContextHelper.narrow(nsobjref);

         // create instance of server object, call POA to convert to objref
         tuitionadj server = new tuitionadj(50,3);
         org.omg.CORBA.Object objref1 = rootpoa.servant_to_reference(server);

         NameComponent[] path1 = 
             { new NameComponent("tuitionadj","Object") };
         ncref.rebind(path1,objref1); // actual registration

         // now wait for client invocation
         System.out.println("waiting for client call...");
         myorb.run();
         
     } catch (Exception e) {e.printStackTrace();}
  } // main
}