source: trunk/EventBenchConsole/src/de/ugoe/cs/eventbench/commands/CMDshowTimer.java

package de.ugoe.cs.eventbench.commands;

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

import de.ugoe.cs.eventbench.CommandHelpers;
import de.ugoe.cs.eventbench.data.GlobalDataContainer;
import de.ugoe.cs.util.console.Command;
import de.ugoe.cs.util.console.Console;

/**
 * <p>
 * Command to show the time elapsed since a timer has been started.
 * </p>
 * 
 * @author Steffen Herbold
 * @version 1.0
 */
public class CMDshowTimer implements Command {

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#run(java.util.List)
         */
        @Override
        public void run(List<Object> parameters) {
                String timerName;
                try {
                        timerName = (String) parameters.get(0);
                } catch (Exception e) {
                        throw new InvalidParameterException();
                }

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

                long startTime = (Long) dataObject;
                long currentTime = System.currentTimeMillis();
                Console.traceln("" + (currentTime - startTime) + " milliseconds");
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#help()
         */
        @Override
        public void help() {
                Console.println("Usage: showTimer <timerName>");
        }

}