--- a/src/treecms/proto/edit/EditableNodeAPITreeBuilder.java	Sat Aug 28 15:43:18 2010 +0900
+++ b/src/treecms/proto/edit/EditableNodeAPITreeBuilder.java	Sat Aug 28 17:34:57 2010 +0900
@@ -1,25 +1,69 @@
 package treecms.proto.edit;
 
+import java.util.List;
+import java.util.UUID;
+
 import treecms.proto.api.NodeAPI;
 import treecms.proto.api.NodeAPITreeBuilder;
 
 public class EditableNodeAPITreeBuilder implements NodeAPITreeBuilder
 {
-	public EditableNodeAPITreeBuilder()
+	private NodeAPI m_root;
+	private NodeAPI m_clone;
+	
+	public EditableNodeAPITreeBuilder(NodeAPI _root)
+	{
+		m_root = _root;
+		m_clone = clone(_root);
+	}
+	
+	private NodeAPI clone(NodeAPI _orig)
 	{
+		EditableNodeAPI clone = new EditableNodeAPI(generateUUID());
+		clone.setClassName(_orig.getClassName());
+		clone.setTitle(_orig.getTitle());
+		clone.setOriginal(_orig);
+		
+		List<NodeAPI> children = _orig.getChildList();
+		for(NodeAPI child : children){
+			//System.out.println(child.getTitle());
+			clone.addChild(clone(child));
+		}
 		
+		return clone;
 	}
-
+	
+	public void discard()
+	{
+		//discard changes.
+		m_clone = clone(m_root);
+	}
+	
+	public void commit()
+	{
+		//commit changes
+	}
+	
+	public void push()
+	{
+		//push changes
+	}
+	
+	public String generateUUID()
+	{
+		return UUID.randomUUID().toString();
+	}
+	
 	@Override
 	public NodeAPI getContents() {
 		// TODO Auto-generated method stub
-		return null;
+		return this.m_clone;
 	}
 
 	@Override
 	public NodeAPI createNode() {
 		// TODO Auto-generated method stub
-		return null;
+		return new EditableNodeAPI(generateUUID());
 	}
 
 }

--- a/src/treecms/proto/simple/SimpleNodeAPI.java	Sat Aug 28 15:43:18 2010 +0900
+++ b/src/treecms/proto/simple/SimpleNodeAPI.java	Sat Aug 28 17:34:57 2010 +0900
@@ -6,7 +6,7 @@
 
 import treecms.proto.api.NodeAPI;
 
-class SimpleNodeAPI implements NodeAPI
+public class SimpleNodeAPI implements NodeAPI
 {
 	private LinkedList<NodeAPI> m_childs;
 	

--- a/src/treecms/proto/simple/SimpleNodeAPITreeBuilder.java	Sat Aug 28 15:43:18 2010 +0900
+++ b/src/treecms/proto/simple/SimpleNodeAPITreeBuilder.java	Sat Aug 28 17:34:57 2010 +0900
@@ -6,14 +6,17 @@
 
 public class SimpleNodeAPITreeBuilder implements NodeAPITreeBuilder
 {
+	private NodeAPI m_root;
+	
 	public SimpleNodeAPITreeBuilder()
 	{
+		m_root = new SimpleNodeAPI(generateUUID());
 		return;
 	}
 	
 	public NodeAPI getContents()
 	{
-		return new SimpleNodeAPI(generateUUID());
+		return m_root;
 	}
 	
 	public NodeAPI createNode()

--- a/src/treecms/proto/test/Test1.java	Sat Aug 28 15:43:18 2010 +0900
+++ b/src/treecms/proto/test/Test1.java	Sat Aug 28 17:34:57 2010 +0900
@@ -52,6 +52,5 @@
 			NodeAPI node = itr.next();
 			System.out.println(node.getTitle());
 		}
-		
 	}
 }

--- a/src/treecms/proto/test/Test2.java	Sat Aug 28 15:43:18 2010 +0900
+++ b/src/treecms/proto/test/Test2.java	Sat Aug 28 17:34:57 2010 +0900
@@ -1,7 +1,58 @@
 package treecms.proto.test;
 
-import junit.framework.TestCase;
+import java.util.Iterator;
+
+import treecms.proto.api.*;
+import treecms.proto.simple.*;
+import treecms.proto.edit.*;
 
-public class Test2 extends TestCase {
-
+public class Test2
+{
+	public static void main(String _arg[])
+	{
+		NodeAPITreeBuilder builder = new SimpleNodeAPITreeBuilder();
+		NodeAPI root = builder.getContents();
+		root.setTitle("root");
+		
+		NodeAPI child1 = builder.createNode();
+		child1.setTitle("child1");
+		NodeAPI child2 = builder.createNode();
+		child2.setTitle("child2");
+		
+		root.addChild(child1);
+		root.addChild(child2);
+		
+		NodeAPI child11 = builder.createNode(); 
+		child11.setTitle("child11");
+		NodeAPI child12 = builder.createNode();
+		child12.setTitle("child12");
+		NodeAPI child13 = builder.createNode();
+		child13.setTitle("child13");
+		
+		child1.addChild(child11);
+		child1.addChild(child12);
+		child1.addChild(child13);
+		
+		NodeAPI child21 = builder.createNode();
+		child21.setTitle("child21");
+		
+		child2.addChild(child21);
+		
+		NodeAPI child211 = builder.createNode();
+		child211.setTitle("child211");
+		NodeAPI child212 = builder.createNode();
+		child212.setTitle("child212");
+		
+		child21.addChild(child211);
+		child21.addChild(child212);
+		
+		
+		NodeAPITreeBuilder builder1 = new EditableNodeAPITreeBuilder(root);
+		PreOrderTreeWalker walker = new PreOrderTreeWalker(builder1.getContents());
+		Iterator<NodeAPI> itr = walker.iterator();
+		while(itr.hasNext()){
+			NodeAPI node = itr.next();
+			System.out.println(node.getTitle());
+		}
+	}
 }