// Author: Josh Holtrop
// Date: 2008-10-30
// CS656
// Lab Excersize 3

/**
 * This class implements the PresenceService interface using Chord.
 * It provides a presence service for the chat system.
 */
public class PresenceServiceImpl implements PresenceService
{
    ChordClient myChordClient;

	public PresenceServiceImpl(ChordClient chordClient)
	{
        myChordClient = chordClient;
	}

    /* a user calls this method to register with the presence service */
    public void register(RegistrationInfo reg)
	{
	}

    /* a user calls this method to unregister with the presence service */
    public void unregister(String userName)
	{
	}

    /* a user calls this method to get the registration information
     * for another user by name */
    public RegistrationInfo lookup(String name)
	{
	    return null;
	}

    /* called when a user wishes to leave the network */
	public void leave()
    {
    }
}