--- a/src/alice/codesegment/CodeSegmentManager.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/codesegment/CodeSegmentManager.java	Wed Feb 08 16:07:33 2012 +0900
@@ -43,5 +43,13 @@
 	public static CodeSegmentManager get() {
 		return instance;
 	}
+
+	public static void submit(CodeSegment cs) {
+		try {
+			CodeSegmentManager.get().readyQueue.put(cs);
+		} catch (InterruptedException e) {
+			e.printStackTrace();
+		}
+	}
 	
 }

--- a/src/alice/codesegment/InputDataSegment.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/codesegment/InputDataSegment.java	Wed Feb 08 16:07:33 2012 +0900
@@ -7,11 +7,17 @@
 import alice.datasegment.DataSegmentValue;
 import alice.datasegment.Receiver;
 
+/**
+ * InputDataSegment Manager
+ * 			keep tracking unbound/bound count
+ * @author kazz
+ *
+ */
 public class InputDataSegment {
 	
 	private CodeSegment cs;
-	private AtomicInteger count = new AtomicInteger(1); // for no input data segments
-	private AtomicInteger keyCount = new AtomicInteger(0); 
+	private AtomicInteger count = new AtomicInteger(1); // 1 for no input data segments
+	private AtomicInteger keyCount = new AtomicInteger(0); // number of DataSegments
 	
 	public InputDataSegment(CodeSegment cs) {
 		this.cs = cs;
@@ -53,14 +59,15 @@
 	
 	public void receive() {
 		if (count.decrementAndGet() == 0) {
-			try {
-				CodeSegmentManager.get().readyQueue.put(cs);
-			} catch (InterruptedException e) {
-				e.printStackTrace();
-			}
+			CodeSegmentManager.submit(cs);
 		}
 	}
 	
+	/**
+	 * InputDataSegment factory
+	 * @param type PEEK or TAKE
+	 * @return Receiver of DataSegment reply 
+	 */
 	public Receiver create(CommandType type) {
 		return new Receiver(this, type);
 	}

--- a/src/alice/datasegment/CommandType.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/datasegment/CommandType.java	Wed Feb 08 16:07:33 2012 +0900
@@ -4,7 +4,7 @@
 
 public enum CommandType {
 	PUT,
-	UPDATE,
+	UPDATE, // remove a DataSegment value and put
 	PEEK,
 	TAKE,
 	REMOVE,

--- a/src/alice/datasegment/DataSegmentKey.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/datasegment/DataSegmentKey.java	Wed Feb 08 16:07:33 2012 +0900
@@ -7,6 +7,11 @@
 
 import alice.datasegment.Command; 
 
+/**
+ * Synchronized DataSegment for each DataSegment key
+ * @author kazz
+ *
+ */
 public class DataSegmentKey {
 	
 	private String key;

--- a/src/alice/datasegment/LocalDataSegmentManager.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/datasegment/LocalDataSegmentManager.java	Wed Feb 08 16:07:33 2012 +0900
@@ -38,7 +38,11 @@
 		dataSegmentKey.addCommand(cmd);
 		logger.debug(cmd.getCommandString());
 	}
-
+	
+	
+	/**
+	 * Enqueue update command to the queue of each DataSegment key
+	 */
 	@Override
 	public void update(String key, Value val, CodeSegment cs) {
 		DataSegmentKey dataSegmentKey = getDataSegmentKey(key);

--- a/src/alice/datasegment/Receiver.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/datasegment/Receiver.java	Wed Feb 08 16:07:33 2012 +0900
@@ -8,6 +8,11 @@
 
 import alice.codesegment.InputDataSegment;
 
+/**
+ * MessagePack implementation and DataSegment Receiver
+ * @author kazz
+ *
+ */
 public class Receiver {
 	public InputDataSegment ids;
 	public int index;
@@ -15,8 +20,8 @@
 	public String from;
 	public CommandType type;
 	
-	public String managerKey;//
-	public String key;//
+	public String managerKey; // for debugging
+	public String key; 		  // for debugging
 	
 	public Receiver(InputDataSegment ids, CommandType type) {
 		this.ids = ids;
@@ -25,8 +30,8 @@
 	}
 	
 	public void setKey(String managerKey, String key) {
-		this.managerKey = managerKey;//
-		this.key = key;//
+		this.managerKey = managerKey;
+		this.key = key;
 		setKey(managerKey, key, 0);
 	}
 

--- a/src/alice/test/codesegment/local/StartCodeSegment.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/test/codesegment/local/StartCodeSegment.java	Wed Feb 08 16:07:33 2012 +0900
@@ -9,10 +9,12 @@
 		System.out.println("run StartCodeSegment");
 		
 		TestCodeSegment cs = new TestCodeSegment();
-		cs.arg1.setKey("local", "key1");
+		cs.arg1.setKey("local", "key1"); // unbound datasegment key1 is created and connect to cs.
+										 // cs is waiting for local.key1
 		System.out.println("create TestCodeSegment");
 		
-		ods.update("local", "key1", "String data");
-	}
+		ods.update("local", "key1", "String data"); // bind string data to datasegment local.key1
+													// this startup TestCodeSegment.
+ 	}
 
 }

--- a/src/alice/test/codesegment/local/TestCodeSegment.java	Wed Feb 08 14:31:16 2012 +0900
+++ b/src/alice/test/codesegment/local/TestCodeSegment.java	Wed Feb 08 16:07:33 2012 +0900
@@ -6,6 +6,7 @@
 
 public class TestCodeSegment extends CodeSegment {
 	
+	// create input datasegment arg1
 	Receiver arg1 = ids.create(CommandType.PEEK);
 	
 	@Override
@@ -22,6 +23,7 @@
 		TestCodeSegment cs = new TestCodeSegment();
 		cs.arg1.setKey("local", "key1", arg1.index);
 		
+		// DataSegment.get("local").update
 		ods.update("local", "key1", "String data");
 	}