localusertestassoc.java

老外的在线考试

/*
 * SchoolEJB - CyberDemia's library of EJBs for educational related services.
 * Copyright (C) 2003 CyberDemia Research and Services
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 * 
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA  02111-1307, USA.
 *
 * See the COPYING file located in the top-level-directory of
 * the archive of this library for complete text of license.
 */
package com.cyberdemia.school;
import javax.ejb.*;
import java.util.Date;

/**
 * 
 * LocalUserTestAssoc represents a test that is assigned to a user.
 * User has a many-to-many relationship with test.
 * LocalUserTestAssoc also keeps track of the current and maximum possible scores
 * for a single user running a test.
 * 
 * @author Alexander Yap
 */
public interface LocalUserTestAssoc extends EJBLocalObject
{

	/**
	* Gets the user ID of this association.
	* @return User ID.
	*/
	public String getUserId();

	/**
	* Gets the test ID that is assigned to the user.
	* @return Test ID.
	*/
	public String getTestId();

	/**
	* Gets the current score as an int.
	* @return Current score
	*/
	public int getScore();
	
	/**
	* Gets the maximum score as an int.
	* This is the maximum value that score can be.
	* @return Maximum score
	*/
	public int getMaxScore();

	/**
	* Adds value and the maximum value to score.
	* @param val Value to add.
	* @param maxVal The maximum value that val can be.
	* @return New score.
	*/
	public int addScore(int val, int maxVal);

	/**
	 * Gets the last modified datetime.
	 * @return Date when this association was last modified/updated.
	 */
	public Date getLastModifiedDateTime();
	
	/**
	 * Mark that the user has exceeded the time limit for this test.
	 * Once marked as true, it cannot be unmarked.
	 */
	public void exceededTestTime();	
	
	/**
	 * Checks if the user has exceeded the time limit for this test.
	 * @return true if this test's time limit has been exceeded.
	 */
	public boolean isExceededTestTime();


}