ChoiceUtil.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2008-11, Red Hat Middleware LLC, and others contributors as indicated
 * by the @authors tag. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * 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,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */
package org.savara.protocol.model.util;

import java.util.logging.Logger;

import org.scribble.protocol.model.Block;
import org.scribble.protocol.model.Choice;
import org.scribble.protocol.model.Interaction;
import org.scribble.protocol.model.ModelObject;
import org.scribble.protocol.model.Role;

public class ChoiceUtil {
	
	private static final Logger LOG=Logger.getLogger(ChoiceUtil.class.getName());

	public static Role getDecisionMaker(Choice choice) {
		Role ret=null;
		
		for (Block path : choice.getPaths()) {
			java.util.List<ModelObject> interactions=
						org.scribble.protocol.util.InteractionUtil.getInitialInteractions(path);
			boolean found=false;
			
			for (ModelObject mobj : interactions) {
				if (mobj instanceof Interaction) {
					Interaction interaction=(Interaction)mobj;
					
					if (ret == null) {
						ret = interaction.getFromRole();
					} else if (!ret.equals(interaction.getFromRole())) {
						LOG.severe("Mismatch between decision making interactions '"+
									ret+"' and '"+interaction.getFromRole()+"'");
					}
					
					found = true;
				}
			}
			
			if (!found) {
				LOG.severe("No interaction found in path: "+path);				
			}
		}
		
		return(ret);
	}
	
	/**
	 * This method determines whether the localised choice is associated with the
	 * decision maker.
	 * 
	 * @param choice The choice
	 * @return Whether the choice is associated with the decision maker
	 */
	public static boolean isDecisionMaker(Choice choice) {
		boolean ret=false;
		
		if (choice.getRole() != null && choice.getEnclosingProtocol() != null &&
				choice.getRole().equals(choice.getEnclosingProtocol().getLocatedRole())) {
			ret = true;
		}
		
		return(ret);
	}
}