HugeGraph-978: add prefixWith() for bytes

Change-Id: I17a493ef0097f9208f4cfa3aad8bbd159283f4bb

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.baidu.hugegraph</groupId>
     <artifactId>hugegraph-common</artifactId>
-    <version>1.3.5-SNAPSHOT</version>
+    <version>1.3.6-SNAPSHOT</version>
 
     <distributionManagement>
         <snapshotRepository>

src/main/java/com/baidu/hugegraph/util/Bytes.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2017 HugeGraph Authors
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with this
+ * work for additional information regarding copyright ownership. The ASF
+ * licenses this file to You under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package com.baidu.hugegraph.util;
+
+/**
+ * TODO: extends com.google.common.primitives.Bytes
+ */
+public final class Bytes {
+
+    public static boolean prefixWith(byte[] bytes, byte[] prefix) {
+        if (bytes.length < prefix.length) {
+            return false;
+        }
+        for (int i = 0; i < prefix.length; i++) {
+            if (bytes[i] != prefix[i]) {
+                return false;
+            }
+        }
+        return true;
+    }
+}