Making classes final to make inheritance impossible

[iot2.git] / iotjava / iotrmi / Java / IoTRMICommClient.java

diff --git a/iotjava/iotrmi/Java/IoTRMICommClient.java b/iotjava/iotrmi/Java/IoTRMICommClient.java
index bf2f7c16d0d572d46d6d24b45d0d8c7d6db75c55..8598844153d7b6b0fb394f18b7a39028269ba7a6 100644 (file)
--- a/iotjava/iotrmi/Java/IoTRMICommClient.java
+++ b/iotjava/iotrmi/Java/IoTRMICommClient.java
@@ -22,7 +22,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
  * @version     1.0
  * @since       2017-01-27
  */
-public class IoTRMICommClient extends IoTRMIComm {
+public final class IoTRMICommClient extends IoTRMIComm {
 
        /**
         * Class Properties
@@ -73,10 +73,10 @@ public class IoTRMICommClient extends IoTRMIComm {
                                                if (packetBytes != null) {
                                                        int packetType = IoTRMIComm.getPacketType(packetBytes);
                                                        if (packetType == IoTRMIUtil.METHOD_TYPE) {
-                                                               System.out.println("Method packet: " + Arrays.toString(packetBytes));
+                                                               //System.out.println("Method packet: " + Arrays.toString(packetBytes));
                                                                methodQueue.offer(packetBytes);
                                                        } else if (packetType == IoTRMIUtil.RET_VAL_TYPE) {
-                                                               System.out.println("Return value packet: " + Arrays.toString(packetBytes));
+                                                               //System.out.println("Return value packet: " + Arrays.toString(packetBytes));
                                                                returnQueue.offer(packetBytes);
                                                        } else
                                                                throw new Error("IoTRMICommClient: Packet type is unknown: " + packetType);
@@ -100,18 +100,27 @@ public class IoTRMICommClient extends IoTRMIComm {
        public synchronized void sendReturnObj(Object retObj, byte[] methodBytes) {
 
                // Send back return value
-               byte[] retObjBytes = IoTRMIUtil.getObjectBytes(retObj);
+               //byte[] retObjBytes = IoTRMIUtil.getObjectBytes(retObj);
+               byte[] retObjBytes = null;
+               if (retObj != null)     // Handle nullness
+                       retObjBytes = IoTRMIUtil.getObjectBytes(retObj);
                // Send return value together with OBJECT_ID and METHOD_ID for arbitration
                int objMethIdLen = IoTRMIUtil.OBJECT_ID_LEN + IoTRMIUtil.METHOD_ID_LEN;
                int headerLen = objMethIdLen + IoTRMIUtil.PACKET_TYPE_LEN;
-               byte[] retAllBytes = new byte[headerLen + retObjBytes.length];
+               //byte[] retAllBytes = new byte[headerLen + retObjBytes.length];
+               byte[] retAllBytes = null;
+               if (retObj == null)     // Handle nullness
+                       retAllBytes = new byte[headerLen];
+               else
+                       retAllBytes = new byte[headerLen + retObjBytes.length];
                // Copy OBJECT_ID and METHOD_ID
                System.arraycopy(methodBytes, 0, retAllBytes, 0, objMethIdLen);
                int packetType = IoTRMIUtil.RET_VAL_TYPE;       // This is a return value
                byte[] packetTypeBytes = IoTRMIUtil.intToByteArray(packetType);
                System.arraycopy(packetTypeBytes, 0, retAllBytes, objMethIdLen, IoTRMIUtil.PACKET_TYPE_LEN);
                // Copy array of bytes (return object)
-               System.arraycopy(retObjBytes, 0, retAllBytes, headerLen, retObjBytes.length);
+               if (retObj != null)
+                       System.arraycopy(retObjBytes, 0, retAllBytes, headerLen, retObjBytes.length);
                try {
                        rmiClientSend.sendBytes(retAllBytes);
                } catch (IOException ex) {