answerhistorydata.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 java.io.Serializable;
import java.util.Date;

/**
 * AnswerHistoryData is a data transfer object to transfer AnswerHistoryRecordBean data to clients.
 * 
 * @author Alexander Yap
 */
public class AnswerHistoryData implements Serializable
{
	/**
	 * Creates an instance of AnswerHistoryData.
	 * @param testId Test ID
	 * @param questionId Question ID
	 * @param userId User ID
	 * @param questionIndex Index of the question within the test.
	 * @param questionScore Question score
	 * @param userAnswer User's answer index
	 * @param correctAnswer Question's correct answer index
	 * @param correct Whether the user's answer was correct
	 * @param timestamp Timestamp when the user answered the question.
	 */
	public AnswerHistoryData( 
		String testId,
		String questionId,
		String userId,
		int questionIndex,
		int questionScore,
		int userAnswer,
		int correctAnswer,
		boolean correct,
		Date timestamp )
	{
		m_testId = testId;
		m_questionId = questionId;
		m_userId = userId;
		m_questionIndex = questionIndex;
		m_questionScore = questionScore;
		m_userAnswer = userAnswer;
		m_correctAnswer = correctAnswer;
		m_correct = correct;
		m_timestamp = timestamp;
	}
	
	/**
	 * Gets the test ID.
	 * @return Test ID
	 */
	public String getTestId()
	{
		return m_testId;
	}
	
	/**
	 * Gets the question ID.
	 * @return Question ID
	 */
	public String getQuestionId()
	{
		return m_questionId;
	}
	
	/**
	 * Gets the user ID.
	 * @return User ID
	 */
	public String getUserId()
	{
		return m_userId;
	}
	
	/**
	 * Gets the index of the question within the test.
	 * @return Index of the question.
	 */
	public int getQuestionIndex()
	{
		return m_questionIndex;
	}
	
	/**
	 * Gets the score of the question. This is the score awarded to the
	 * user if the user's answer is correct.
	 * @return Question score.
	 */
	public int getQuestionScore()
	{
		return m_questionScore;
	}
	
	/**
	 * Gets the user's answer index.
	 * @return User's answer index.
	 */
	public int getUserAnswer()
	{
		return m_userAnswer;
	}
	
	/**
	 * Gets the correct answer index.
	 * @return Correct answer index.
	 */
	public int getCorrectAnswer()
	{
		return m_correctAnswer;
	}
	
	/**
	 * Checks whether the user's answer was correct.
	 * @return true if user's answer was correct, otherwise false.
	 */
	public boolean isCorrect()
	{
		return m_correct;
	}
	
	/**
	 * Gets the timestamp when the user answered the question.
	 * @return Timestamp when the user answered the question.
	 */
	public Date getTimestamp()
	{
		return m_timestamp;
	}
	
	private String m_testId = null;
	private String m_questionId = null;
	private String m_userId = null;
	private int m_questionIndex = -1;
	private int m_questionScore = -1;
	private int m_userAnswer = -1;
	private int m_correctAnswer = -1;
	private boolean m_correct = false;
	private Date m_timestamp = null;
	
}