admincontroller.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 75 行

package Controllers;

import Entities.*;
import Interfaces.*;
import Transactions.*;

/**	For the administrator accessing the system, read in a
	transaction and execute it. */
public class AdminController implements UserController
{
	
	protected AdminInterface inter;

	/**	For the administrator accessing the system, read in a
		transaction and execute it */
	public void initiate(Person newUser)
	{
		inter = new AdminInterface();
		int transId = 0;
		CallNum callNum = null;
		Administrator user = (Administrator)newUser; 
		if (user != null)
		{
			do
			{
				transId = inter.getCommandID();
				
				switch (transId)
				{
					case 20:
						int studentNum = inter.getStudentNumber();
						StudentGradeTrans t20 = new StudentGradeTrans();
						t20.execute(studentNum);
						inter.showGradeList(t20.gradeList);
						break;
					case 21:
						callNum = inter.getCallNum();
						ClassListTrans t21 = new ClassListTrans();
						t21.execute(callNum);
						inter.showClassList(t21.classList);
						break;
					case 22:
						callNum = inter.getCallNum();
						SectEnrollmentTrans t22 = new SectEnrollmentTrans();
						t22.execute(callNum);
						inter.showEnrollmentLimit(t22.limit); 
						break;
					case 40:
						callNum = inter.getCallNum();
						int limit = inter.getCourseLimit();
						SetSectionLimitTrans t40 = new SetSectionLimitTrans();
						t40.execute(callNum, limit);						
						break;
					case 41:
						callNum = inter.getCallNum();
						String profName = inter.getInstructorName();
						AssignInstructorTrans t41 = new AssignInstructorTrans();
						t41.execute(callNum, profName);							
						break;
					case 42:
						callNum = inter.getCallNum();
						String room = inter.getRoom();
						AssignRoomTrans t42 = new AssignRoomTrans();
						t42.execute(callNum, room);
						break;
					default:
						if (transId != 99)
							inter.showInvalidChoice();
				}
			} while (transId != 99);
		}
	}

} /* end of AdminController */