--- a/src/test/java/alice/jungle/PersistentJournalTest.java	Wed Jul 30 22:17:23 2014 +0900
+++ b/src/test/java/alice/jungle/PersistentJournalTest.java	Mon Sep 01 00:04:32 2014 +0900
@@ -12,11 +12,11 @@
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Children;
-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.ChangeListReader;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.NodePath;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultTreeEditor;
+import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.DefaultTraverser;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
@@ -61,18 +61,18 @@
 			editor2.success();
 		}
 		JungleTree tree2 = jungle2.getTreeByName("hoge");
-		Node node1 = tree1.getRootNode();
-		Node node2 = tree2.getRootNode();
-		Children<Node> child1 = node1.getChildren();
-		Children<Node> child2 = node2.getChildren();
+		TreeNode node1 = tree1.getRootNode();
+		TreeNode node2 = tree2.getRootNode();
+		Children<TreeNode> child1 = node1.getChildren();
+		Children<TreeNode> child2 = node2.getChildren();
 		assertEquals(child1.size(), child2.size());
-		Either<Error, Node> either1 = child1.at(pos);
-		Either<Error, Node> either2 = child1.at(pos);		
+		Either<Error, TreeNode> either1 = child1.at(pos);
+		Either<Error, TreeNode> either2 = child1.at(pos);		
 		assertFalse(either1.isA());
 		assertFalse(either2.isA());
 		
-		Node nodeA = either1.b();
-		Node nodeB = either2.b();
+		TreeNode nodeA = either1.b();
+		TreeNode nodeB = either2.b();
 		ByteBuffer bb1 = nodeA.getAttributes().get(key);
 		ByteBuffer bb2 = nodeB.getAttributes().get(key);
 		String strA = new String(bb1.array());