--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/transaction/DefaultChangeSet.java	Fri Nov 21 12:46:36 2014 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/transaction/DefaultChangeSet.java	Sat Nov 22 12:08:35 2014 +0900
@@ -6,6 +6,7 @@
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.ChangeSet;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.TreeOperation;
+import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.ParentIndex;
 
 public class DefaultChangeSet implements ChangeSet
 {
@@ -16,9 +17,9 @@
 	private final String treeName;
 	private final long revision; 
 	private final TreeMap<String, TreeMap<String, List<TreeNode>>> index;
-	private final TreeMap<TreeNode,TreeNode> parentIndex;
+	private final ParentIndex parentIndex;
 	
-	public DefaultChangeSet(TreeNode _node,ChangeSet _prev,ChangeList _log,String _uuid, String _treeName, long _revision, TreeMap<String, TreeMap<String, List<TreeNode>>> index,TreeMap<TreeNode,TreeNode> parentIndex)
+	public DefaultChangeSet(TreeNode _node,ChangeSet _prev,ChangeList _log,String _uuid, String _treeName, long _revision, TreeMap<String, TreeMap<String, List<TreeNode>>> index,ParentIndex parentIndex)
 	{
 		this.root = _node;
 		this.previous = _prev;
@@ -80,7 +81,7 @@
 
 
   @Override
-  public TreeMap<TreeNode, TreeNode> getParentIndex() {
+  public ParentIndex getParentIndex() {
     return parentIndex;
   }