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StockWatch.java
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1998-05-08
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/*
* Copyright (c) 1996 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
package examples.stock;
import java.rmi.*;
/**
* The StockWatch remote interface is used to register interest in
* receiving stock updates.
*/
public interface StockWatch extends java.rmi.Remote {
/**
* Request notification of stock updates.
* @param stock the stock name
* @param obj the remote object to be notified
* @return the latest update of the stock
* @exception StockNotFoundException if stock is not known
* @exception RemoteException if some communication failure occurs
*/
Stock watch(String stock, StockNotify obj)
throws StockNotFoundException, RemoteException;
/**
* Cancel request for stock updates for a particular stock.
* @param stock the stock name
* @param obj the remote object canceling the notification
* @exception RemoteException if some communication failure occurs
*/
void cancel(String stock, StockNotify obj) throws RemoteException;
/**
* Returns an array of stock update information for the stocks
* already registered by the remote object.
* @param obj the remote object
* @return the list of stocks, or null if obj is not watching any
* stocks
* @exception RemoteException if some communication failure occurs
*/
Stock[] list(StockNotify obj) throws RemoteException;
/**
* Cancel all requests for stock updates for the remote object.
* @param obj the remote object canceling the request
* @exception RemoteException if some communication failure occurs
*/
void cancelAll(StockNotify obj) throws RemoteException;
}