source: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/ui/commands/CMDflattenModel.java @ 667

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

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

import de.ugoe.cs.quest.CommandHelpers;
import de.ugoe.cs.quest.usageprofiles.FirstOrderMarkovModel;
import de.ugoe.cs.quest.usageprofiles.HighOrderMarkovModel;
import de.ugoe.cs.quest.usageprofiles.ModelFlattener;
import de.ugoe.cs.util.console.Command;
import de.ugoe.cs.util.console.GlobalDataContainer;

/**
 * <p>
 * Command to flatten high-order models and create first-order markov models
 * with the same stochastic properties.
 * </p>
 * 
 * @author Steffen Herbold
 * @version 1.0
 */
public class CMDflattenModel 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 modelnameFOM;

                try {
                        modelname = (String) parameters.get(0);
                        modelnameFOM = (String) parameters.get(1);
                } catch (Exception e) {
                        throw new InvalidParameterException();
                }

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

                HighOrderMarkovModel model = (HighOrderMarkovModel) dataObject;
                ModelFlattener flattener = new ModelFlattener();
                FirstOrderMarkovModel modelFOM = flattener
                                .flattenHighOrderMarkovModel(model);

                if (GlobalDataContainer.getInstance().addData(modelnameFOM, modelFOM)) {
                        CommandHelpers.dataOverwritten(modelnameFOM);
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#help()
         */
        @Override
        public String help() {
                return "flattenModel <modelname> <modelname_flattened>";
        }
}