source: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/ui/commands/CMDgenerateRandomSequences.java @ 658

package de.ugoe.cs.quest.ui.commands;

import java.security.InvalidParameterException;
import java.util.Collection;
import java.util.List;

import de.ugoe.cs.quest.CommandHelpers;
import de.ugoe.cs.quest.eventcore.Event;
import de.ugoe.cs.quest.testgeneration.RandomWalkGenerator;
import de.ugoe.cs.quest.ui.GlobalDataContainer;
import de.ugoe.cs.quest.usageprofiles.IStochasticProcess;
import de.ugoe.cs.util.console.Command;
import de.ugoe.cs.util.console.Console;

/**
 * <p>
 * Command to generate random sessions.
 * </p>
 * 
 * @author Steffen Herbold
 * @version 1.0
 */
public class CMDgenerateRandomSequences implements Command {

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#run(java.util.List)
         */
        @Override
        public void run(List<Object> parameters) {
                String modelname;
                String sequencesName;
                int numSessions;
                int minLength = 0;
                int maxLength = Integer.MAX_VALUE;
                long maxIter;
                boolean validEnd = true;
                try {
                        modelname = (String) parameters.get(0);
                        sequencesName = (String) parameters.get(1);
                        numSessions = Integer.parseInt((String) parameters.get(2));
                        minLength = Integer.parseInt((String) parameters.get(3));
                        maxLength = Integer.parseInt((String) parameters.get(4));
                        maxIter = numSessions * 10;
                        if (parameters.size() >= 5) {
                                maxIter = Long.parseLong((String) parameters.get(5));
                        }
                        if (parameters.size() >= 6) {
                                validEnd = Boolean.parseBoolean((String) parameters.get(6));
                        }
                } catch (Exception e) {
                        throw new InvalidParameterException();
                }

                IStochasticProcess model = null;
                Object dataObject = GlobalDataContainer.getInstance()
                                .getData(modelname);
                if (dataObject == null) {
                        CommandHelpers.objectNotFoundMessage(modelname);
                        return;
                }
                if (!(dataObject instanceof IStochasticProcess)) {
                        CommandHelpers.objectNotType(modelname, "IStochasticProcess");
                        return;
                }
                model = (IStochasticProcess) dataObject;

                RandomWalkGenerator generator = new RandomWalkGenerator(numSessions,
                                minLength, maxLength, validEnd, maxIter);
                Collection<List<Event>> sequences = generator
                                .generateTestSuite(model);

                if (sequences.size() < numSessions) {
                        Console.println("Only " + sequences.size()
                                        + " unique sessions generated after " + maxIter
                                        + " iterations");
                }

                if (GlobalDataContainer.getInstance().addData(sequencesName, sequences)) {
                        CommandHelpers.dataOverwritten(sequencesName);
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#help()
         */
        @Override
        public void help() {
                Console.println("Usage: generateRandomSequenecs <modelName> <sequencesName> <numSessions> <minLength> <maxLength> {<maxIter>} {<validEnd>}");
        }

}