questionform.java

老外的在线考试

/*
 * CyberTester - J2EE Web application for creating, delivering and managing tests/exams/surveys. 
 * Copyright (C) 2004 CyberDemia Research and Services Pty Ltd
 *
 * 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 (see the file COPYING); 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 program for complete text of license.
 */
package com.cyberdemia.cybertester.testee.test;

import java.util.*;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.*;
import com.cyberdemia.school.IQuestionType;

/**
 * 
 * QuestionForm is a Struts ActionForm to send, receive and validate values from
 * the single question form.
 *  
 * @version $Revision: 1.2 $ at $Date: 2004/03/29 14:55:42 $ by $Author: alexycyap $
 * @author Alexander Yap
 */
public final class QuestionForm extends ActionForm
{
	public String getAnswer()
	{
		if (IQuestionType.MULTIPLE_CHOICE_TYPE.equals(m_type))
		{
			StringBuffer ansStrBuf = new StringBuffer();
			int corCnt = m_multipleAnswers.size();
			boolean hasCorrect=false;
			for (int c=0; c<corCnt; c++)
			{
				if (((Boolean)m_multipleAnswers.get(c)).booleanValue())
				{
					if (hasCorrect)
					{
						ansStrBuf.append(",");
					}
					else
					{
						hasCorrect = true;
					}
					ansStrBuf.append(c);
				}
			}
			return ansStrBuf.toString();
		}

		return m_answer;
	}

	public void setAnswer(String ans)
	{
		m_answer = ans;
	}

	public Object getQuesId()
	{
		return m_id;
	}

	public void setQuesId(Object id)
	{
		m_id = id;
	}

	public int getQuesIndex()
	{
		return m_index;
	}
/*
	public int getQuesDisplayNumber()
	{
		return m_index+1;
	}
*/
	public void setQuesIndex(int index)
	{
		m_index = index;
	}

	public void setType(Integer type)
	{
		m_type = type;
	}

	public boolean getMultipleAnswerIndexed(int index)
	{
		return false;
	}

	public void setMultipleAnswerIndexed(int index, boolean correct)
	{
		if (m_multipleAnswers==null)
		{
			m_multipleAnswers = new ArrayList();
		}

		while (index >= m_multipleAnswers.size())
		{
			m_multipleAnswers.add(Boolean.FALSE);
		}
		m_multipleAnswers.set(index, correct ? Boolean.TRUE : Boolean.FALSE);
	}

	/**
	* Reset all properties to their default values.
	*
	* @param mapping The mapping used to select this instance
	* @param request The servlet request we are processing
	*/
	public void reset(ActionMapping mapping, HttpServletRequest request) 
	{
		m_answer = "";
	}
	
	public ActionErrors validate(ActionMapping mapping, HttpServletRequest request)
	{
		ActionErrors errors = new ActionErrors();
//		if ((m_answer<0) || (m_answer>=4))
//			errors.add("answer", new ActionError("error.answer.required"));
		return errors;
	}
	
	private List m_multipleAnswers = null;
	private String m_answer = "0";
	private Object m_id = null;
	private Integer m_type = IQuestionType.SINGLE_CHOICE_TYPE;
	private int m_index = 0;
}