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package ca.ubc.cs.spl.aspectPatterns.patternLibrary;
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This file is part of the design patterns project at UBC
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* either https://www.mozilla.org/MPL/ or https://aspectj.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ca.ubc.cs.spl.aspectPatterns.
*
* For more details and the latest version of this code, please see:
* https://www.cs.ubc.ca/labs/spl/projects/aodps.html
*
* Contributor(s):
*/
/**
* This interface is implemented by <i>Command</i> objects.
*
* @author Jan Hannemann
* @author Gregor Kiczales
* @version 1.1, 02/17/04
*/
public interface Command {
/**
* Executes the command.
*
* @param receiver the object this command is manipulating.
*/
public void executeCommand(CommandReceiver receiver);
/**
* Queries the command's executable status. This interface method is
* optional (default: all commands are excutable); a default
* implementation is provided by the abstract CommandProtocol aspect.
*
* @returns a boolean indicating whether the command is excutable.
*/
public boolean isExecutable();
}
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