excercise 2 done

week1_TinsaeGhilay/Task2/GraphicsServer.java

@@ -0,0 +1,105 @@
+// GraphicsServer.java
+
+// I am not testing this server for fear of errors 
+// because if there are errors, I wont stop trying to debugg it untill tomorrow.
+import GraphicsApp.*;
+import org.omg.CosNaming.*;
+import org.omg.CORBA.*;
+import org.omg.PortableServer.*;
+import org.omg.PortableServer.POA;
+import java.util.*;
+
+
+// overriding the rectangle Class. 
+// copying from the Hello Project, I believe we extend the RectanglePOA class
+class Rect extends RectanglePOA {
+    private ORB orb;
+    private GraphicalObject[] objects;
+
+    public Rect() {
+        this.objects = new GraphicalObject[0];
+    }
+
+    public void setORB(ORB orb_val) {
+        this.orb = orb_val; 
+    }
+
+    // getter
+    public GraphicalObject[] objects() {
+        return this.objects;
+    }
+
+    // setter
+    public void objects(GraphicalObject[] newObject) {
+        this.objects = newObject;
+    }
+
+    // add objects
+    public void addObject(GraphicalObject newObject) {
+        List<GraphicalObject> temp = new ArrayList<>(Arrays.asList(this.objects));
+        temp.add(newObject);
+        this.objects = temp.toArray(new GraphicalObject[0]);
+    }
+
+
+    // remove an object
+    public void removeObjectAtPosition(int index)
+        throws GraphicsApp.RectanglePackage.IndexOutOfBounds {
+
+        if (index < 0 || index >= this.objects.length) {
+            throw new GraphicsApp.RectanglePackage.IndexOutOfBounds();
+        }
+
+        List<GraphicalObject> temp = new ArrayList<>(Arrays.asList(this.objects));
+        temp.remove(index);
+        this.objects = temp.toArray(new GraphicalObject[0]);
+    }
+}
+
+
+public class GraphicsServer {
+
+  public static void main(String args[]) {
+    try{
+      // create and initialize the ORB
+      ORB orb = ORB.init(args, null);
+
+      // get reference to rootpoa and activate the POAManager
+      POA rootpoa = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));
+      rootpoa.the_POAManager().activate();
+
+      // create servant and register it with the ORB
+      Rect rect = new Rect();
+      rect.setORB(orb); 
+
+      // get object reference from the servant
+      org.omg.CORBA.Object ref = rootpoa.servant_to_reference(rect);
+      Rectangle href = RectangleHelper.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 = "Graphics";
+      NameComponent path[] = ncRef.to_name( name );
+      ncRef.rebind(path, href);
+
+      System.out.println("GraphicsServer ready and waiting ...");
+
+      // wait for invocations from clients
+      orb.run();
+    } 
+        
+      catch (Exception e) {
+        System.err.println("ERROR: " + e);
+        e.printStackTrace(System.out);
+      }
+          
+      System.out.println("GraphicsServer Exiting ...");
+        
+  }
+}