--- a/rep/SessionList.java	Sat Oct 18 19:01:40 2008 +0900
+++ b/rep/SessionList.java	Sat Oct 18 21:28:17 2008 +0900
@@ -5,37 +5,20 @@
 import rep.channel.REPSocketChannel;
 import rep.xml.SessionXMLEncoder;
 
-public class SessionList {
+public class SessionList extends LinkedList<Session>{
 	
-	LinkedList<Session> sessionLinkedList = new LinkedList<Session>();
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
 	LinkedList<String> stringlist = new LinkedList<String>();
-	private int sessionID = 0;
-	private int editorCount = 0;
 	private String maxHost;
+	private int sid_root = 0;
 	
 
-	public int addSession(REPSocketChannel<REPCommand> channel, String string) {
-		sessionID++;
-		return sessionID; 
-		
-	}
-
-	public int getNumberOfEditor() {
-		editorCount++;
-		return editorCount;
-	}
-
-	public String getSessionList() {
-		if (sessionLinkedList != null) {
-			SessionManager.logger.writeLog(
-					sessionLinkedList.toString());
-			return sessionLinkedList.toString();
-		}
-		return "{}";
-	}
 
 	public void sendSelect(int sid) {
-		REPSocketChannel<REPCommand> channel = sessionLinkedList.get(sid-1).getOwner().getChannel();
+		REPSocketChannel<REPCommand> channel = get(sid-1).getOwner().getChannel();
 		channel.write(new REPCommand(REP.SMCMD_SELECT, sid, 0, 0, 0, ""));
 	}
 
@@ -106,29 +89,29 @@
 //	}*/
 
 	public LinkedList<Session> getList() {
-		return sessionLinkedList;
+		return new LinkedList<Session>(this);
 	}
 
 	public String toXML() {
-		SessionXMLEncoder encoder = new SessionXMLEncoder(sessionLinkedList);
+		SessionXMLEncoder encoder = new SessionXMLEncoder(this);
 		encoder.sessionListToXML();
 		return null;
 	}
 
 	public int addSession(Session session) {
-		sessionID++;
-		session.setSID(sessionID);
-		sessionLinkedList.add(session);
-		return sessionID;
+		int sid;
+		session.setSID(sid=newSessionID());
+		add(session);
+		return sid;
 	}
 
 	public Session getSession(int sid) {
-		for(Session session : sessionLinkedList){
+		for(Session session : this){
 			if(session.getSID() == sid){
 				return session;
 			}
 		}
-		return sessionLinkedList.get(sid - 1);
+		return get(sid - 1);
 	}
 
 	public void setMaxHost(String myHost) {
@@ -139,8 +122,9 @@
 		return maxHost;
 	}
 
-	public void setList(LinkedList<Session> list) {
-		sessionLinkedList = list;
+
+	public int newSessionID() {
+		return ++sid_root ;
 	}
 
 }