[SOLVED] Getting errors while converting a string back to CORBA object reference

Getting errors while converting a string back to CORBA object reference

This is my server class :

import java.io.FileNotFoundException;
import java.io.PrintWriter;

import org.omg.CORBA.ORB;
import org.omg.CORBA.ORBPackage.InvalidName;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.POAHelper;
import org.omg.PortableServer.POAManagerPackage.AdapterInactive;
import org.omg.PortableServer.POAPackage.ObjectNotActive;
import org.omg.PortableServer.POAPackage.ServantAlreadyActive;
import org.omg.PortableServer.POAPackage.WrongPolicy;

public class BehaviorServer {

    /**
     * @param args
     * @throws InvalidName 
     * @throws WrongPolicy 
     * @throws ServantAlreadyActive 
     * @throws ObjectNotActive 
     * @throws FileNotFoundException 
     * @throws AdapterInactive 
     */
    public static void main(String[] args) throws InvalidName, ServantAlreadyActive, WrongPolicy, ObjectNotActive, FileNotFoundException, AdapterInactive {
        ORB orb=ORB.init(args,null);
        POA rootPOA=POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

        BehaviorImpl aBehavior=new BehaviorImpl();
        byte[] id=rootPOA.activate_object(aBehavior);
        org.omg.CORBA.Object ref=rootPOA.id_to_reference(id);

        String ior=orb.object_to_string(ref);
        System.out.println(ior);
        PrintWriter file=new PrintWriter("ior.txt");
        file.println(ior);

        rootPOA.the_POAManager().activate();
        orb.run();
    }

}

My client:

public class BehaviorClient {

    /**
     * @param args
     * @throws IOException 
     */
    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        ORB orb=ORB.init(args,null);
        BufferedReader br=new BufferedReader(new FileReader("ior.txt"));
        String ior=br.readLine();
        br.close();

        org.omg.CORBA.Object o=orb.string_to_object(ior);
        Behavior aBehavior=BehaviorHelper.narrow(o);
        aBehavior.eat();

    }

}

The error I am getting:

Nov 02, 2014 11:58:00 PM com.sun.corba.se.impl.orb.ORBImpl string_to_object
WARNING: "IOP00110201: (BAD_PARAM) Null parameter"
org.omg.CORBA.BAD_PARAM:   vmcid: SUN  minor code: 201  completed: No
    at com.sun.corba.se.impl.logging.ORBUtilSystemException.nullParam(Unknown Source)
    at com.sun.corba.se.impl.logging.ORBUtilSystemException.nullParam(Unknown Source)
    at com.sun.corba.se.impl.orb.ORBImpl.string_to_object(Unknown Source)
    at animal.BehaviorClient.main(BehaviorClient.java:22)

I've looked at the other questions posted on this problem but it doesn't help me. Looked up these: Bad_Param in java CORBA Tried initializing my ORB Orb Initialization

Solution

ior is null, which implies that oir.txt is empty, which is caused by failing to close the file when you wrote it. Add a close() after the println().