answerchoicebean.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.impl;

import javax.ejb.*;

/**
 * AnswerChoiceBean
 * 
 * @author Alexander Yap
 */
public abstract class AnswerChoiceBean implements EntityBean
{
	
	/**
	 * Gets the ID (primary key) of this answer choice.
	 * @return ID of this answer choice.
	 */
	public abstract String getId();

	/**
	 * Sets the ID (primary key) of this answer choice.
	 * @param id ID of this answer choice.
	 */
	public abstract void setId(String id);
	
	/**
	 * Gets index of this answer choice within the owner Question.
	 * @return Index of this answer choice.
	 */
	public abstract int getAnswerIndex();
	
	/**
	 * Sets index of this answer choice within the owner Question.
	 * @param index Index of this answer choice.
	 */
	public abstract void setAnswerIndex(int index);
	
	/**
	 * Gets the text of this answer choice.
	 * @return Text of this answer choice.
	 */
	public abstract String getAnswerText();
	
	/**
	 * Sets the text of this answer choice.
	 * @param text Text of this answer choice.
	 */
	public abstract void setAnswerText(String text);

	//-----------------------------
	// Create methods.
	//-----------------------------

	public String ejbCreate( String id, int index, String text ) throws CreateException
	{
		setId(id);
		setAnswerIndex(index);
		setAnswerText(text);
		return null;
	}

	public void ejbPostCreate( String id, int index, String text )
	{
	}

	//-----------------------------
	// Container methods. Override in subclasses if appropriate.
	//-----------------------------

	public void setEntityContext(EntityContext ctx) { }
	public void ejbActivate() { }
	public void ejbPassivate() { }
	public void ejbLoad() { }
	public void ejbStore() { }
	public void ejbRemove() { }

}