question.java

来自「java案例开发一书的源代码」· Java 代码 · 共 103 行

/*
 * Question.java
 *
 * Created on 2003年11月5日, 下午9:19
 */

package romulus;

/**
 *
 * @author  Romulus
 * @version 1.0
 */
public class Question implements RomulusNode{
    
    /** The ident of the Question.*/
    private String ident = null;
    
    /** The timing of the Question in ms.
     * 0 means no timing.
     */
    private long timing = 0;
    
    /** The title of the Question.*/
    private String title = null;
    
    /** The Objectives of the Question.*/
    private java.util.Vector objectives = new java.util.Vector();
    
    /** The Feedbacks of the Question.*/
    private java.util.Vector feedbacks = new java.util.Vector();
    
    /** The Question item of the Question.*/
    private QuestionItem qitem = null;
    
    /** Creates a new instance of Question */
    Question(String ident, long timing, String title) throws RomulusException{
        if(ident == null){
            throw new RomulusException(RomulusException.IdentError);
        }
        if(timing < 0){
            throw new RomulusException(RomulusException.TimingError);
        }
        this.ident = ident;
        this.timing = timing;
        this.title = title;
    }
    
    /** Add and remove the objectives.*/
    void addObjective(Objective obj){
        objectives.add(obj);
    }
    
    boolean removeObjective(Objective obj){
        return objectives.remove(obj);
    }

    /** Add and remove the feedback.*/
    void addFeedback(Feedback fb){
        feedbacks.add(fb);
    }
    
    boolean removeFeedback(Feedback fb){
        return feedbacks.remove(fb);
    }
    
    /** Set the QuestionItem.*/
    void setQuestionItem(QuestionItem qitem){
        this.qitem = qitem;
    }
    
    /** Get the imformations. */
    public String getIdent(){
        return ident;
    }
    
    public long getTiming(){
        return timing;
    }
    
    public String getTitle(){
        return title;
    }
    
    public QuestionItem getItem(){
        return qitem;
    }

    public java.util.Iterator objectiveIterator(){
        return objectives.iterator();
    }
    
    public java.util.Iterator feedbackIterator(){
        return feedbacks.iterator();
    }

    /** The method used to accept the Visitor to do something. */
    public void Accept(Visitor v) throws java.sql.SQLException, RomulusException{
        v.VisitQuestion(this);
    }
    
}