--- a/src/main/java/alice/datasegment/DataSegmentKey.java	Tue Jul 15 06:15:53 2014 +0900
+++ b/src/main/java/alice/datasegment/DataSegmentKey.java	Tue Jul 15 16:00:22 2014 +0900
@@ -11,93 +11,93 @@
  *
  */
 public class DataSegmentKey {
-	
-	private ArrayList<DataSegmentValue> dataList = new ArrayList<DataSegmentValue>();
-	private ArrayList<Command> waitList = new ArrayList<Command>();
-	private int tailIndex = 1;
-	
-	public synchronized void runCommand(Command cmd) {
-		switch (cmd.type) {
-		case UPDATE:
-			if (dataList.size() != 0) {
-				dataList.remove(0);
-			}
-		case PUT:
-			int index = tailIndex;
-			tailIndex++;
-			DataSegmentValue dsv = new DataSegmentValue(index, cmd.val, cmd.obj, cmd.reverseKey); 
-			dataList.add(dsv);
-			// Process waiting peek and take commands
-			for (Iterator<Command> iter = waitList.iterator(); iter.hasNext(); ) {
-				Command waitCmd = iter.next();
-				if (waitCmd.index < index) {
-					replyValue(waitCmd ,dsv);
-					iter.remove();
-					if (waitCmd.type == CommandType.TAKE) { // someone is waiting for this put or update command
-						dataList.remove(dsv);
-						break;
-					}
-				}
-			}
-			break;
-		case PEEK:
-			if (cmd.index >= tailIndex) {
-				waitList.add(cmd);
-				break;
-			}
-			boolean waitFlag2 = true;
-			for (DataSegmentValue data : dataList) {
-				if (data.index > cmd.index) {
-					replyValue(cmd ,data);
-					waitFlag2 = false;
-					break;
-				}
-			}
-			if (waitFlag2)
-				waitList.add(cmd);
-			break;
-		case TAKE:
-			if (cmd.index >= tailIndex) {
-				waitList.add(cmd);
-				break;
-			}
-			boolean waitFlag = true;
-			for (Iterator<DataSegmentValue> iter = dataList.iterator(); iter.hasNext(); ) {
-				DataSegmentValue data = iter.next();
-				if (data.index > cmd.index) {
-					replyValue(cmd ,data);
-					iter.remove();
-					waitFlag = false;
-					break;
-				}
-			}
-			if (waitFlag)
-				waitList.add(cmd);
-			break;
-		case REMOVE:
-			// TODO: implements later
-			break;
-		default:
-		}
+
+    private ArrayList<DataSegmentValue> dataList = new ArrayList<DataSegmentValue>();
+    private ArrayList<Command> waitList = new ArrayList<Command>();
+    private int tailIndex = 1;
 
-	}
-	
-	public void replyValue(Command cmd, DataSegmentValue data){
-		if (cmd.cs!=null){ // if cmd has cs-instance, it means Command from local.
-			cmd.cs.ids.reply(cmd.receiver, new Command(CommandType.REPLY, null, null, data.val, data.obj, data.index, cmd.seq, null, null, data.from));
-		} else {
-			try {
-				if (!cmd.flag){ 
-					cmd.connection.sendQueue.put(new Command(CommandType.REPLY, null, null, data.val, data.obj, data.index, cmd.seq, null, null, data.from));
-				}
-				else {
-					cmd.connection.write(new Command(CommandType.REPLY, null, null, data.val, data.obj, data.index, cmd.seq, null, null, data.from));
-				}
-				
-			} catch (InterruptedException e) {
-				e.printStackTrace();
-			}
-		}
-	}
-	
+    public synchronized void runCommand(Command cmd) {
+        switch (cmd.type) {
+        case UPDATE:
+            if (dataList.size() != 0) {
+                dataList.remove(0);
+            }
+        case PUT:
+            int index = tailIndex;
+            tailIndex++;
+            DataSegmentValue dsv = new DataSegmentValue(index, cmd.val, cmd.obj, cmd.reverseKey); 
+            dataList.add(dsv);
+            // Process waiting peek and take commands
+            for (Iterator<Command> iter = waitList.iterator(); iter.hasNext(); ) {
+                Command waitCmd = iter.next();
+                if (waitCmd.index < index) {
+                    replyValue(waitCmd ,dsv);
+                    iter.remove();
+                    if (waitCmd.type == CommandType.TAKE) { // someone is waiting for this put or update command
+                        dataList.remove(dsv);
+                        break;
+                    }
+                }
+            }
+            break;
+        case PEEK:
+            if (cmd.index >= tailIndex) {
+                waitList.add(cmd);
+                break;
+            }
+            boolean waitFlag2 = true;
+            for (DataSegmentValue data : dataList) {
+                if (data.index > cmd.index) {
+                    replyValue(cmd ,data);
+                    waitFlag2 = false;
+                    break;
+                }
+            }
+            if (waitFlag2)
+                waitList.add(cmd);
+            break;
+        case TAKE:
+            if (cmd.index >= tailIndex) {
+                waitList.add(cmd);
+                break;
+            }
+            boolean waitFlag = true;
+            for (Iterator<DataSegmentValue> iter = dataList.iterator(); iter.hasNext(); ) {
+                DataSegmentValue data = iter.next();
+                if (data.index > cmd.index) {
+                    replyValue(cmd ,data);
+                    iter.remove();
+                    waitFlag = false;
+                    break;
+                }
+            }
+            if (waitFlag)
+                waitList.add(cmd);
+            break;
+        case REMOVE:
+            // TODO: implements later
+            break;
+        default:
+        }
+
+    }
+
+    public void replyValue(Command cmd, DataSegmentValue data){
+        if (cmd.cs!=null){ // if cmd has cs-instance, it means Command from local.
+            cmd.cs.ids.reply(cmd.receiver, new Command(CommandType.REPLY, null, null, data.val, data.obj, data.index, cmd.seq, null, null, data.from));
+        } else {
+            try {
+                if (!cmd.flag){ 
+                    cmd.connection.sendQueue.put(new Command(CommandType.REPLY, null, null, data.val, data.obj, data.index, cmd.seq, null, null, data.from));
+                }
+                else {
+                    cmd.connection.write(new Command(CommandType.REPLY, null, null, data.val, data.obj, data.index, cmd.seq, null, null, data.from));
+                }
+
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
 }