/*
 * Copyright (c) 2006-2009 by Dirk Riehle, http://dirkriehle.com
 *
 * This file is part of the Wahlzeit photo rating application.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 */

package org.wahlzeit.services;


/**
 * A Session object maintains a DatabaseConnection and helps track processing time. Typically, there is one for each
 * working thread, be it a system thread or a web session.
 */
public class Session {

	public static final String NAME = "name";
	public static final String PROCESSING_TIME = "processingTime";
	public static final String NO_SESSION = "no sessioin";

	/**
	 * Session state
	 */
	protected String name = null;


	/**
	 * processing time for requests
	 */
	protected long processingTime = 0;

	/**
	 *
	 */
	protected Session() {
		// do nothing
	}

	/**
	 * @methodtype init
	 */
	protected void initialize(String myName) {
		name = myName;
		notifyNameChanged();
	}

	/**
	 * @methodproperty hook
	 *
	 * Hook method for subclasses to get to know when name changes.
	 * @see #initialize(String)
	 */
	protected void notifyNameChanged() {
	}

	/**
	 * @methodtype get
	 */
	public String getName() {
		return name;
	}

	/**
	 * @methodtype get
	 */
	public String getClientId() {
		return "system";
	}

	/**
	 * @methodtype init
	 */
	public void resetProcessingTime() {
		processingTime = 0;
		notifyProcessingTimeChanged();
	}

	/**
	 * @methodproperty hook
	 *
	 * Hook method for subclasses to get to know when processing time changes.
	 * @see #addProcessingTime(long)
	 * @see #resetProcessingTime()
	 */
	protected void notifyProcessingTimeChanged() {
	}

	/**
	 * @methodtype set
	 */
	public void addProcessingTime(long time) {
		processingTime += time;
		notifyProcessingTimeChanged();
	}

	/**
	 * @methodtype get
	 */
	public long getProcessingTime() {
		return processingTime;
	}

}
