localquestionhome.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.Collection;

/**
 * LocalQuestionHome is the local home interface for QuestionBean.
 *
 * @author Alexander Yap
 */
public interface LocalQuestionHome extends EJBLocalHome
{
	/**
	 * Creates a new QuestionBean instance and returns a LocalQuestion
	 * interface to it.
	 * @param name Display name
	 * @param ques Question body text
	 * @param answer Index to correct answer
	 * @param hint Hint text
	 * @param difficulty Difficulty
	 * @param explanation Explanation text
	 * @param timeLimitSecs Time limit in seconds.
	 * @return LocalQuestion interface to a new QuestionBean instance.
	 * @throws CreateException
	 */
	public LocalQuestion create( String name, String ques, Integer answer,
		String hint, DifficultyEnum difficulty,
		String explanation, int timeLimitSecs ) throws CreateException;
	
	/**
	 * Finds a QuestionBean by its unique ID.
	 * @param qid Unique ID
	 * @return LocalQuestion interface to the QuestionBean instance.
	 * @throws FinderException if the QuestionBean cannot be found.
	 */
	public LocalQuestion findByPrimaryKey(String qid) throws FinderException;

	/**
	 * Gets all QuestionBean instances, including the inactive ones.
	 * @return Collection of LocalQuestion interfaces.
	 * @throws FinderException
	 */
	public Collection findAll() throws FinderException;

	/**
	 * Gets all active QuestionBean instances.
	 * @return Collection of LocalQuestion interfaces.
	 * @throws FinderException
	 */
	public Collection findAllActive() throws FinderException;

	/**
	 * Finds QuestionBean instances assigned to a specified test.
	 * @param testId Test ID.
	 * @return Collection of LocalQuestion interfaces to questions that belong to the test, or empty Collection is no such question.
	 * @throws FinderException
	 */
	public Collection findByTest(String testId) throws FinderException;

}