tasklog.java

著名的开源仿真软件yale

/*
 *  YALE - Yet Another Learning Environment
 *  Copyright (C) 2002, 2003
 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa, 
 *          Katharina Morik, Oliver Ritthoff
 *      Artificial Intelligence Unit
 *      Computer Science Department
 *      University of Dortmund
 *      44221 Dortmund,  Germany
 *  email: [e-mail]
 *  web:   http://yale.cs.uni-dortmund.de/
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License as 
 *  published by the Free Software Foundation; either version 2 of the
 *  License, or (at your option) any later version. 
 *
 *  This program 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
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 *  USA.
 */
package edu.udo.cs.yale.tools;

import java.util.*;

/** Interrelated messages can be written together in a log file by using a TaskLog, e.g. 
 *  for displaying messages from a learning method.
 *  The times given in the log messages are relative to the start time of the task.
 *  All messages use the same verbosity level which is given in the constructor. 
 *  @version $Id: TaskLog.java,v 2.1 2003/04/04 11:59:31 fischer Exp $ */
public class TaskLog {

    /** The current time. */
    private class CurrentTime extends GregorianCalendar {
	public CurrentTime(long millis) {
	    super();
	    setTimeInMillis(millis);
	}
    }

    /** Creation time. */
    private long starttime;

    /** Name of the task. */
    private String taskName;

    /** Verbosity level of all task messages. */
    private int verbosity;

    // -------------------- Konstruktoren --------------------

    /** Creates a new task log object with verbosity level LogService.TASK+1. */
    TaskLog(String taskName) {
	this(taskName, LogService.TASK+1);
    }

    /** Creates a new task log object. */
    TaskLog(String taskName, int verbosity) {
	this.taskName = taskName;
	this.starttime = System.currentTimeMillis();
	this.verbosity = verbosity;
	logMessage("Task started");
    }


    // -------------------- Methoden zum Protokollieren --------------------

    public void logMessage(String message) {
	LogService.logMessage("<"+taskName+"> " + message, verbosity);
    }

    public void logException(String message, Exception e) {
	LogService.logException("<"+taskName+"> " + message, e);
    }

    public void taskComplete() {
	logMessage("Task completed in " + getTime());
    }

    // -------------------- Methoden zur Berechnung der Zeit --------------------

    public long getRelativeTimeMillis() {
	return System.currentTimeMillis() - starttime;
    }

    public GregorianCalendar getRelativeTime() {
	GregorianCalendar cal = new CurrentTime(getRelativeTimeMillis());
	cal.add(GregorianCalendar.HOUR, -1);
	return cal;
	
    }

    /** Returns a formatted date string. */
    private String getTime() {
	GregorianCalendar cal = getRelativeTime();
	String time =
	    LogService.zweistellig(cal.get(GregorianCalendar.HOUR_OF_DAY)) + ":" +
	    LogService.zweistellig(cal.get(GregorianCalendar.MINUTE)) + ":" +
	    LogService.zweistellig(cal.get(GregorianCalendar.SECOND));
	return time;
    }
}