From 2af8591bd71838b9782c552c6724f1efe1cc836e Mon Sep 17 00:00:00 2001
From: Eric Evans <eevans@apache.org>
Date: Fri, 27 Apr 2012 09:40:56 -0500
Subject: [PATCH] eliminate clientutil dependency on commons-lang

Patch by Dave Brosius; reviewed by eevans for CASSANDRA-3665
---
 build.xml                                              |  1 -
 .../org/apache/cassandra/utils/ByteBufferUtil.java     | 10 +++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/build.xml b/build.xml
index b7df8d2659..1ef21f0730 100644
--- a/build.xml
+++ b/build.xml
@@ -1077,7 +1077,6 @@
         </fileset>
         <fileset dir="${build.lib}">
           <include name="**/guava*.jar" />
-          <include name="**/commons-lang*.jar" />
         </fileset>
       </classpath>
     </junit>
diff --git a/src/java/org/apache/cassandra/utils/ByteBufferUtil.java b/src/java/org/apache/cassandra/utils/ByteBufferUtil.java
index 93f28df9fd..e35e137b5b 100644
--- a/src/java/org/apache/cassandra/utils/ByteBufferUtil.java
+++ b/src/java/org/apache/cassandra/utils/ByteBufferUtil.java
@@ -18,6 +18,12 @@
  */
 package org.apache.cassandra.utils;
 
+/*
+ * BE ADVISED: New imports added here might introduce new dependencies for
+ * the clientutil jar.  If in doubt, run the `ant test-clientutil-jar' target
+ * afterward, and ensure the tests still pass.
+ */
+
 import java.io.*;
 import java.nio.ByteBuffer;
 import java.nio.charset.CharacterCodingException;
@@ -29,8 +35,6 @@ import static com.google.common.base.Charsets.UTF_8;
 import org.apache.cassandra.io.util.FileDataInput;
 import org.apache.cassandra.io.util.FileUtils;
 
-import org.apache.commons.lang.ArrayUtils;
-
 /**
  * Utility methods to make ByteBuffers less painful
  * The following should illustrate the different ways byte buffers can be used
@@ -71,7 +75,7 @@ import org.apache.commons.lang.ArrayUtils;
  */
 public class ByteBufferUtil
 {
-    public static final ByteBuffer EMPTY_BYTE_BUFFER = ByteBuffer.wrap(ArrayUtils.EMPTY_BYTE_ARRAY);
+    public static final ByteBuffer EMPTY_BYTE_BUFFER = ByteBuffer.wrap(new byte[0]);
 
     public static int compareUnsigned(ByteBuffer o1, ByteBuffer o2)
     {