Added default constructor for class BatchOperationEntry
(needed for Kryo serialization/deserialization).

Change-Id: I825f074b3aae6e02ddb864dfa4bf31fa2b5c77e8
diff --git a/src/main/java/net/onrc/onos/api/batchoperation/BatchOperationEntry.java b/src/main/java/net/onrc/onos/api/batchoperation/BatchOperationEntry.java
index b7f4356..9c15d31 100644
--- a/src/main/java/net/onrc/onos/api/batchoperation/BatchOperationEntry.java
+++ b/src/main/java/net/onrc/onos/api/batchoperation/BatchOperationEntry.java
@@ -11,6 +11,15 @@
     private final U target;
 
     /**
+     * Default constructor for serializer.
+     */
+    @Deprecated
+    protected BatchOperationEntry() {
+        this.operator = null;
+        this.target = null;
+    }
+
+    /**
      * Constructs new instance for the entry of the BatchOperation.
      *
      * @param operator the operator of this operation