import java.util.Set;
import java.lang.reflect.*;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
/** Class IoTRMIObject is a class that stores info of an object.
* <p>
* @version 1.0
* @since 2016-10-03
*/
-public class IoTRMIObject {
+public final class IoTRMIObject {
/**
* Class Properties
private IoTRMIUtil rmiUtil;
private IoTSocketServer rmiServer;
private byte[] methodBytes;
+ private Lock lock = new ReentrantLock();
/**
public byte[] getMethodBytes() throws IOException {
// Receive method info
+ //System.out.println("Method RMIObj before: " + Arrays.toString(methodBytes));
methodBytes = rmiServer.receiveBytes(methodBytes);
- System.out.println("Method: " + Arrays.toString(methodBytes));
+ //System.out.println("Method RMIObj after: " + Arrays.toString(methodBytes));
return methodBytes;
}
}
+ /**
+ * static version of getMethodId()
+ */
+ public static int getMethodId(byte[] methodBytes) {
+
+ // Get method Id bytes
+ byte[] methodIdBytes = new byte[IoTRMIUtil.METHOD_ID_LEN];
+ // Method Id is positioned after object Id in the byte array
+ System.arraycopy(methodBytes, IoTRMIUtil.OBJECT_ID_LEN, methodIdBytes, 0, IoTRMIUtil.METHOD_ID_LEN);
+ // Get method Id
+ int methodId = IoTRMIUtil.byteArrayToInt(methodIdBytes);
+ // Get method Id
+ return methodId;
+ }
+
+
/**
* getMethodParams() gets method params based on byte array received
* <p>
byte[] retObjBytes = IoTRMIUtil.getObjectBytes(retObj);
rmiServer.sendBytes(retObjBytes);
}
+
+
+ /**
+ * sendReturnObj() overloaded to send multiple return objects for structs
+ */
+ public void sendReturnObj(Class<?>[] retCls, Object[] retObj) throws IOException {
+
+ // Send back return value
+ byte[] retObjBytes = returnToBytes(retCls, retObj);
+ rmiServer.sendBytes(retObjBytes);
+ }
+
+
+ /**
+ * returnToBytes() takes array of objects and generates bytes
+ */
+ public byte[] returnToBytes(Class<?>[] retCls, Object[] retObj) {
+
+ // Get byte arrays and calculate method bytes length
+ int numbRet = retObj.length;
+ int retLen = 0;
+ byte[][] objBytesArr = new byte[numbRet][];
+ for (int i = 0; i < numbRet; i++) {
+ // Get byte arrays for the objects
+ objBytesArr[i] = IoTRMIUtil.getObjectBytes(retObj[i]);
+ String clsName = retCls[i].getSimpleName();
+ int retObjLen = rmiUtil.getTypeSize(clsName);
+ if (retObjLen == -1) { // indefinite length - store the length first
+ retLen = retLen + IoTRMIUtil.RETURN_LEN;
+ }
+ retLen = retLen + objBytesArr[i].length;
+ }
+ // Construct return in byte array
+ byte[] retBytes = new byte[retLen];
+ int pos = 0;
+ // Iteration for copying bytes
+ for (int i = 0; i < numbRet; i++) {
+
+ String clsName = retCls[i].getSimpleName();
+ int retObjLen = rmiUtil.getTypeSize(clsName);
+ if (retObjLen == -1) { // indefinite length
+ retObjLen = objBytesArr[i].length;
+ byte[] retLenBytes = IoTRMIUtil.intToByteArray(retObjLen);
+ System.arraycopy(retLenBytes, 0, retBytes, pos, IoTRMIUtil.RETURN_LEN);
+ pos = pos + IoTRMIUtil.RETURN_LEN;
+ }
+ System.arraycopy(objBytesArr[i], 0, retBytes, pos, retObjLen);
+ pos = pos + retObjLen;
+ }
+
+ return retBytes;
+ }
}