coursesection.java

国外的数据结构与算法分析用书

package Entities;

import dslib.list.LinkedListUos;

/**	Represents a section associated with a course. */
public class CourseSection
{
	/**	The course section number */
	protected int secNumber;
	
	/**	The instructor for the section */
	protected Instructor instructor;
	
	/**	The room the class was being offered */
	protected String room;
	
	/**	The details of a course section */
	protected SectionDetails sectionDetails;
	
	/**	A lists of registrations */
	public LinkedListUos registrationList;
	
	/**	The number of student allowed in the section */
	protected int numberEnrolled;
	

	/**	Make a new course section from the arguments */
	public CourseSection(int num, SectionDetails secD)
	{
		secNumber = num;
		sectionDetails = secD;
		numberEnrolled = 0;
		registrationList = new LinkedListUos();
	}
	
	/**	Set the room where this course section is to take place */
	public void setRoom(String r)
	{
		room = r;
	}
	
	/**	Assign an instructor for this section */
	public void setInstructor(Instructor newProf)
	{
		instructor = newProf;
		instructor.addCourse(this);
	}
	
	/**	Set the enrollment limit for this section */
	public void setLimit(int newLimit)
	{
		if (newLimit <= 0)
		{
			System.out.println("setLimit -- Invalid limit. Aborting!!");
			return ;
		}
		sectionDetails.setLimit(newLimit);
	}
	
	/**	Add a course_reg object to the list.  This
		records a student being registered in this section */
	public void addRegistration(CourseReg newRegis)
	{
		if (isFull())
		{
			System.out.println("addRegistration -- section is full. Aborting!!");
			return ;
		}			
		registrationList.insert(newRegis);
		numberEnrolled++;
	}
	
	/**	Decrease the number of students enrolled */
	public void decrementEnrollment()
	{
		numberEnrolled--;
	}
	
	/**	Is this section full? */
	public boolean isFull()
	{
		return (numberEnrolled >= limit());
	}

	/**	Return a string representation of the section */
	public String toString()
	{
		String result = "\nSection Number : " + secNumber;
		if (instructor != null)
			result += "\nInstructor : " + instructor;
		else
			result += "\nNo instructor assigned yet";
		if (room != null)
			result += "\nRoom : " + room;
		else
			result += "\nNo room appointed yet";
		result += "\nNumber enrolled : " + numberEnrolled;
		result += "\nSection Details: ";
		result += sectionDetails.toString();
		
		return result;
	}
	
	/**	Return the course section number */
	public int secNumber()
	{
		return secNumber;
	}
	
	/**	Return the instructor for the section */
	public Instructor instructor()
	{
		return instructor;
	}
	
	/**	Return the total number of student allowed in that class */
	public int limit()
	{
		return sectionDetails.limit();
	}
	
	/**	Return the room the class was being offered */
	public String room()
	{
		return room;
	}
	
	/**	Return tThe time the course is offered */
	public String timeOffered()
	{
		return sectionDetails.timeOffered();
	}
	
	/**	Return the days the course is offered */
	public String daysOffered()
	{
		return sectionDetails.daysOffered();
	}
	
	/**	Return the number of student allowed in the section */
	public int numberEnrolled()
	{
		return numberEnrolled;
	}
	
	/**	Return the trem the classes is offered */
	public int term()
	{
		return sectionDetails.term();
	}

} /* end of CourseSection */