Added Android App

[iotcloud.git] / version2 / src / Control / app / src / main / java / iotcloud / KeyValue.java

diff --git a/version2/src/Control/app/src/main/java/iotcloud/KeyValue.java b/version2/src/Control/app/src/main/java/iotcloud/KeyValue.java
new file mode 100644 (file)
index 0000000..cd4821a
--- /dev/null
+++ b/version2/src/Control/app/src/main/java/iotcloud/KeyValue.java
@@ -0,0 +1,76 @@
+package iotcloud;
+import java.nio.ByteBuffer;
+
+/**
+ * KeyValue entry for Slot.
+ * @author Brian Demsky <bdemsky@uci.edu>
+ * @version 1.0
+ */
+
+class KeyValue { /*extends Entry */
+       private IoTString key;
+       private IoTString value;
+
+       public KeyValue(IoTString _key, IoTString _value) {
+               key = _key;
+               value = _value;
+       }
+
+       public IoTString getKey() {
+               return key;
+       }
+
+       public IoTString getValue() {
+               return value;
+       }
+
+       static KeyValue decode(ByteBuffer bb) {
+               int keylength = bb.getInt();
+               int valuelength = bb.getInt();
+               byte[] key = new byte[keylength];
+               bb.get(key);
+
+               if (valuelength != 0) {
+                       byte[] value = new byte[valuelength];
+                       bb.get(value);
+                       return new KeyValue(IoTString.shallow(key), IoTString.shallow(value));
+               }
+
+               return new KeyValue(IoTString.shallow(key), null);
+       }
+
+       public void encode(ByteBuffer bb) {
+               bb.putInt(key.length());
+
+               if (value != null) {
+                       bb.putInt(value.length());
+               } else {
+                       bb.putInt(0);
+               }
+
+               bb.put(key.internalBytes());
+
+               if (value != null) {
+                       bb.put(value.internalBytes());
+               }
+       }
+
+       public int getSize() {
+               if (value != null) {
+                       return 2 * Integer.BYTES + key.length() + value.length();
+               }
+
+               return 2 * Integer.BYTES + key.length();
+       }
+
+       public String toString() {
+               if (value == null) {
+                       return "null";
+               }
+               return value.toString();
+       }
+
+       public KeyValue getCopy() {
+               return new KeyValue(key, value);
+       }
+}