Change ScanResult's cursor type to byte[]

* It's less probabilities to conversion with byte[] <-> ?

src/main/java/redis/clients/jedis/ScanResult.java

@@ -5,7 +5,7 @@ import java.util.List;
 import redis.clients.util.SafeEncoder;
 
 public class ScanResult<T> {
-    private String cursor;
+    private byte[] cursor;
     private List<T> results;
 
     @Deprecated
@@ -15,16 +15,14 @@ public class ScanResult<T> {
      * @see https://github.com/xetorthio/jedis/issues/531 
      */
     public ScanResult(int cursor, List<T> results) {
-	this.cursor = String.valueOf(cursor);
+	this(Protocol.toByteArray(cursor), results);
-	this.results = results;
-    }
-
-    public ScanResult(byte[] cursor, List<T> results) {
-	this.cursor = SafeEncoder.encode(cursor);
-	this.results = results;
     }
 
     public ScanResult(String cursor, List<T> results) {
+	this(SafeEncoder.encode(cursor), results);
+    }
+
+    public ScanResult(byte[] cursor, List<T> results) {
 	this.cursor = cursor;
 	this.results = results;
     }
@@ -37,18 +35,18 @@ public class ScanResult<T> {
      * @return int(currently), but will be changed to String, so be careful to prepare! 
      */
     public int getCursor() {
-	return Integer.parseInt(cursor);
+	return Integer.parseInt(getStringCursor());
     }
 
     /**
      * FIXME: This method should be changed to getCursor() on next major release
      */
     public String getStringCursor() {
-	return cursor;
+	return SafeEncoder.encode(cursor);
     }
     
     public byte[] getBinaryCursor() {
-	return SafeEncoder.encode(cursor);
+	return cursor;
     }
     
     public List<T> getResult() {