Instruction.java

/**
 * This file is part of CloudML [ http://cloudml.org ]
 *
 * Copyright (C) 2012 - SINTEF ICT
 * Contact: Franck Chauvel <franck.chauvel@sintef.no>
 *
 * Module: root
 *
 * CloudML is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * CloudML is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General
 * Public License along with CloudML. If not, see
 * <http://www.gnu.org/licenses/>.
 */
package org.cloudml.mrt.cmd.abstracts;

import java.util.ArrayList;
import java.util.List;

public class Instruction {
    
    public String fromPeer = "";
    
    public Object execute(Object context, List<Change> changes){
        return _execute(context, changes);
    }
    
    /**
     * This method is left to the generated instructions
     * @param context
     * @return 
     */
    protected Object _execute(final Object context, List<Change> changes){
        return null;
    }
    
    protected List<String> additional = null;
    
    public void addAdditional(String s){
        if(additional == null){
            additional = new ArrayList<String>();
        }
        additional.add(s);
    }
    
    public List<String> getAdditional(){
        return additional;
    }
}