--- a/src/main/java/alice/jungle/transaction/NetworkTransactionManager.java	Wed Jul 30 22:17:23 2014 +0900
+++ b/src/main/java/alice/jungle/transaction/NetworkTransactionManager.java	Mon Sep 01 00:04:32 2014 +0900
@@ -2,7 +2,6 @@
 
 import java.util.Iterator;
 
-import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Node;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeList;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeListWriter;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.Result;
@@ -21,7 +20,7 @@
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
 
-public class NetworkTransactionManager<T extends TreeNode<T>> implements TransactionManager<T> 
+public class NetworkTransactionManager<T extends TreeNode> implements TransactionManager<T> 
 {
 
 	private final AtomicReservableReference<TreeContext<T>> repository;
@@ -41,7 +40,7 @@
 	}
 	
 	@Override
-	public Either<Error, TransactionManager<T>> commit(T _newRoot,final TreeOperationLog _log) {
+	public Either<Error, TransactionManager<T>> commit(TreeNode _newRoot,final TreeOperationLog _log) {
 		ChangeSet cs = tip.getChangeSet();
 		long currentRevision = cs.revision();
 		long nextRevision = currentRevision + 1;
@@ -61,7 +60,7 @@
 			}
 		};
 		
-		Node root = _newRoot.getAsNode();
+		TreeNode root = _newRoot;
 		DefaultChangeSet newCs = new DefaultChangeSet(root, cs, list, uuid, treeName, nextRevision);
 		DefaultTreeContext<T> newContext = new DefaultTreeContext<T>(_newRoot,newCs);