iotjava/iotrmi/Java/sample/CallBack_Skeleton.java

   1 package iotrmi.Java.sample;
   2
   3 import java.io.IOException;
   4 import java.util.Set;
   5 import java.util.Arrays;
   6 import iotrmi.Java.IoTRMIObject;
   7
   8 public class CallBack_Skeleton implements CallBackInterface {
   9
  10         private int objectId = 0;       // Default value is 0
  11         private final static String[] methodSignatures = {
  12
  13                 "intprintInt()",
  14                 "voidsetInt(int)"
  15         };
  16         private CallBackInterface cb;
  17         private IoTRMIObject rmiObj;
  18
  19
  20         /**
  21          * Constructors
  22          */
  23         public CallBack_Skeleton(CallBackInterface _cb, int _port) throws
  24                 ClassNotFoundException, InstantiationException,
  25                         IllegalAccessException, IOException {
  26
  27                 cb = _cb;
  28                 System.out.println("Creating CallBack_Skeleton and waiting!");
  29                 rmiObj = new IoTRMIObject(_port, methodSignatures);
  30         }
  31
  32
  33         public void waitRequestInvokeMethod() throws IOException {
  34
  35                 // Loop continuously waiting for incoming bytes
  36                 while (true) {
  37
  38                         rmiObj.getMethodBytes();
  39                         int objId = rmiObj.getObjectId();
  40                         if (objId == objectId) {
  41                         // Multiplex based on object Id
  42                                 rmiObj.getMethodBytes();
  43                                 String methodSign = rmiObj.getSignature();
  44                                 Object[] paramObj = null;
  45                                 Object retObj = null;
  46                                 System.out.println("Method sign: " + methodSign);
  47
  48                                 if (methodSign.equals("intprintInt()")) {
  49                                         retObj = printInt();
  50                                 } else if (methodSign.equals("voidsetInt(int)")) {
  51                                         paramObj = rmiObj.getMethodParams(new Class<?>[] { int.class },
  52                                                 new Class<?>[] { null }, new Class<?>[] { null });
  53                                         setInt((int) paramObj[0]);
  54                                 } else
  55                                         throw new Error("Signature not recognized!");
  56                                 System.out.println("Return object: " + retObj);
  57
  58                                 if (retObj != null) {
  59                                         rmiObj.sendReturnObj(retObj);
  60                                 }
  61                                 System.out.println("Servicing remote call for method: " + methodSign);
  62                         }
  63                 }
  64         }
  65
  66
  67         // Return method signatures
  68         public static String[] getMethodSignatures() {
  69
  70                 return methodSignatures;
  71         }
  72
  73
  74         public int printInt() {
  75                 return cb.printInt();
  76         }
  77
  78
  79         public void setInt(int _i) {
  80                 cb.setInt(_i);
  81         }
  82
  83
  84         public static void main(String[] args) throws Exception {
  85
  86                 int port = 5010;
  87                 CallBack cb = new CallBack(23);
  88                 CallBack_Skeleton cbSkel = new CallBack_Skeleton(cb, port);
  89                 cbSkel.waitRequestInvokeMethod();
  90         }
  91 }