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Thread: help me out with the following code to solve the error

  1. #1
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    Unhappy help me out with the following code to solve the error

    the program is to be implemented using JAVA and CORBA architecture



    CountPOAServer.java


    // CountPOAServer.java: The Count Server main program
     
    import org.omg.PortableServer.*;
    import org.omg.CosNaming.*;
     
    class CountPOAServer
    { static public void main(String[] args)
      { try
        { // Initialize the ORB
          org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args, null);
     
          // get a reference to the root POA
          POA rootPOA = 
               POAHelper.narrow(orb.resolve_initial_references("RootPOA"));
     
          // Create policies for our persistent POA
          org.omg.CORBA.Policy[] policies = {
             rootPOA.create_lifespan_policy(LifespanPolicyValue.TRANSIENT)
          };
     
          // Create myPOA with the right policies
          POA myPOA = rootPOA.create_POA( "count_poa", rootPOA.the_POAManager(),
                policies );
     
          // Create the servant
          CountPOAServant[] countServer = new CountPOAServant[1000];
          String str;
          long startTime=System.currentTimeMillis();
          for(int i=0;i<1000;i++)
          {
        	 str="my Count "+i;
        	// Decide on the ID for the servant
             byte[] countId = "count".getBytes();
             countServer[i] = new CountPOAServant();
        	 System.out.println("my count "+i+" created");
        	 // Activate the servant with the ID on myPOA
        	 /*CountPOAServant countobj = new CountPOAServant();
        	 countobj = countServer[i];
           [U] myPOA.activate_object_with_id(countId,countServer[i]);[/U][QUOTE]shown as an error[/QUOTE]
        	       }
     
          long stoptime=System.currentTimeMillis();
          System.out.println("Average time="+(stoptime-startTime)/1000f+" msec");
     
     
     
     
          // Activate the POA manager
          rootPOA.the_POAManager().activate();
     
     
          // get a reference to the Naming Service root context
          org.omg.CORBA.Object nameServiceObj = 
                 orb.resolve_initial_references("NameService");
          if (nameServiceObj == null) 
          {
            System.out.println("nameServiceObj = null");
            return;
          }
     
          NamingContextExt nameService = 
               NamingContextExtHelper.narrow(nameServiceObj);
          if (nameService == null) 
          {
            System.out.println("nameService = null");
            return;
          }
     
          // bind the Count object in the Naming service
     
          for(int j=0;j<=1000;j++)
          {
        	  NameComponent[] countName = {new NameComponent("countName", "")};
     
          [U]nameService.rebind(countName, myPOA.servant_to_reference(countServer[j]));[/U][QUOTE]shown as an error[/QUOTE]
        [U] System.out.println(myPOA.servant_to_reference(countServer[j])
                +" is ready.");[/U][QUOTE]shown as an error[/QUOTE]
          }
          // Wait for incoming requests
          orb.run();
     
        } catch(Exception e)
        { System.err.println(e);
        }
      }
    }

    the following is the error generated:
    Exception in thread "main" java.lang.Error: Unresolved compilation problems:
    The method activate_object_with_id(byte[], Servant) in the type POAOperations is not applicable for the arguments (byte[], CountPOAServant)
    The method servant_to_reference(Servant) in the type POAOperations is not applicable for the arguments (CountPOAServant)
    The method servant_to_reference(Servant) in the type POAOperations is not applicable for the arguments (CountPOAServant)

    at CountPOAServer.main(CountPOAServer.java:39)



    CountPOAClient.java

    // CountPOAClient.java  Static Client, VisiBroker for Java
    import org.omg.CosNaming.*;
     
    class CountPOAClient
    { public static void main(String args[])
      { try
        { // Initialize the ORB
          System.out.println("Initializing the ORB");
          org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args, null);
     
          // Get a reference to the Naming service
          org.omg.CORBA.Object nameServiceObj = 
                     orb.resolve_initial_references ("NameService");
          if (nameServiceObj == null) 
          {
            System.out.println("nameServiceObj = null");
            return;
          }
     
          org.omg.CosNaming.NamingContext nameService = 
                     org.omg.CosNaming.NamingContextHelper.narrow (nameServiceObj);
          if (nameService == null) 
          {
            System.out.println("nameService = null");
            return;
          }
     
          // resolve the Count object in the Naming service
        /*  NameComponent[] countName = {new NameComponent("countName", "")};
          CounterPOA.Count counter = 
            CounterPOA.CountHelper.narrow(nameService.resolve(countName));*/
     
         [U]CounterPOACount[] countObj = new CounterPOACount[1000];[/U][QUOTE]shown as an error[/QUOTE]
          for(int i=0;i<1000;i++)
          {
        	  NameComponent[] countName= { new NameComponent("My Count"+(i+1),"")};
              countObj[i] = 
    [U]              CounterPOACount.CountHelper.narrow(nameService.resolve(countName));[/U][QUOTE]shown as an error[/QUOTE]
              countObj[i].sum((int)0);
          }
     
     
          // Set sum to initial value of 0
          System.out.println("Setting sum to 0");
       // counter.sum((int)0);
     
          // Calculate Start time
          long startTime = System.currentTimeMillis();
     
          // Increment 1000 times
          System.out.println("Incrementing");
          for (int i = 0 ; i < 1000 ; i++ )
          {  int random=(int)(Math.random()*1000);
        	  countObj[random].increment();
        	  //counter.increment();
          }
     
          // Calculate stop time; print out statistics
          long stopTime = System.currentTimeMillis();
          System.out.println("Avg Ping = "
                           + ((stopTime - startTime)/1000f) + " msecs");
          int sum=0;
          for(int i=0;i<1000;i++)
          {
          	sum= sum + countObj[i].sum();
          }
              System.out.println(" Avg Sum="    +sum/countObj.length);
     
     
         // System.out.println("Sum = " + counter.sum());
        } catch(Exception e)
        { System.err.println("Exception");
          System.err.println(e);
        }
      }
    }

    the following is the error generated:
    Exception in thread "main" java.lang.Error: Unresolved compilation problems:
    CounterPOACount cannot be resolved to a type
    CounterPOACount cannot be resolved to a type
    CounterPOACount cannot be resolved

    at CountPOAClient.main(CountPOAClient.java:34)


    CountPOAServant.java

    // CountPOAServant.java: The Count Implementation
    class CountPOAServant extends CounterPOA.CountPOA
    {
      private int sum;
     
      // Constructors
      CountPOAServant()
      { super();
        System.out.println("Count Object Created");
        sum = 0;
      }
     
      // get sum
      public synchronized int sum()
      { return sum;
      }
     
      // set sum
      public synchronized void sum(int val)
      { sum = val;
      }
     
      // increment method
      public synchronized int increment()
      { sum++;
        return sum;
      }
    }


    the program is to be implemented using JAVA and CORBA architecture
    Last edited by romilc; October 11th, 2009 at 12:32 PM.


  2. #2
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    Default Re: help me out with the following code to solve the error

    This has been posted in the wrong forum so I have moved it to advanced Java.

    Can you please give us as much information about the error as possible. Does the code compile? When is the error generated etc.

    Last but not least, please remember to use code tags!! Check my signature if your unsure how.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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