--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/store/impl/DefaultTreeEditor.java	Wed Nov 30 01:47:55 2016 +0900
@@ -0,0 +1,80 @@
+package jp.ac.u_ryukyu.ie.cr.jungle.store.impl;
+
+
+import jp.ac.u_ryukyu.ie.cr.jungle.store.NodePath;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.TreeEditor;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.LoggingNode;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.trasnformer.NodeEditor;
+import jp.ac.u_ryukyu.ie.cr.jungle.traverser.DefaultEvaluator;
+import jp.ac.u_ryukyu.ie.cr.jungle.traverser.Direction;
+import jp.ac.u_ryukyu.ie.cr.jungle.traverser.Traversal;
+import jp.ac.u_ryukyu.ie.cr.jungle.traverser.Traverser;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.Error;
+import jp.ac.u_ryukyu.ie.cr.jungle.data.list.List;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
+
+public class DefaultTreeEditor implements TreeEditor
+{
+	private final Traverser traverser;
+	public DefaultTreeEditor(Traverser traverser)
+	{
+		this.traverser = traverser;
+	}
+	
+	@Override
+	public Either<Error,LoggingNode> edit(TreeNode root,NodePath path,NodeEditor editor)
+	{
+		DefaultEvaluator e = new DefaultEvaluator(path);
+		Either<jp.ac.u_ryukyu.ie.cr.jungle.util.Error, Traversal> either = traverser.traverse(root,e);
+		
+		if(either.isA()){
+			return DefaultEither.newA(either.a());
+		}
+		Traversal t = either.b();
+		return clone(t,editor);
+	}
+	
+	private Either<Error,LoggingNode> clone(Traversal t,NodeEditor editor)
+	{
+		// copying nodes from bottom to root
+		
+		List<Direction<TreeNode>> path = new List<>();
+		for(Direction<TreeNode> direction : t){
+			path = path.addLast(direction);
+		}
+		
+		// target
+		Direction<TreeNode> targetDirection = path.head();
+		TreeNode target = targetDirection.getTarget();
+		Either<Error,LoggingNode> either = editor.edit(target);
+		if(either.isA()){
+			return DefaultEither.newA(either.a());
+		}
+		
+		LoggingNode newWrap = either.b();
+		
+		// top
+		int pos = targetDirection.getPosition();
+		TreeNode child = newWrap.getWrap();
+	
+		
+		for(Direction<TreeNode> parentDirection : path.deleteHead()){
+		  
+			TreeNodeChildren chs =  parentDirection.getTarget().getChildren();
+			
+			Either<Error,TreeNode> ret = chs.replaceNode(pos,child);
+			if(ret.isA()){
+				return DefaultEither.newA(ret.a());
+			}
+
+			child = ret.b();
+			pos = parentDirection.getPosition();
+		}
+		
+		TreeNode newRoot = child;
+		LoggingNode logNode = editor.wrap(newRoot,newWrap.getOperationLog());
+		return DefaultEither.newB(logNode);
+	}
+	
+}
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