/*************************************************************************/
/* File: ins_DB.h				Author: B. De Hamer      */
/*									 */
/* Class InsDB is derived from GenericDB and is used to hold each of the */
/* the instructors and their time and class preferences.  The InsDB will */
/* only hold things of type InsRec which will be derived from DBItem.    */
/* Add and delete operations will exist for items in the InsDB.          */
/*************************************************************************/

#ifndef INS_DB
#define INS_DB

#include <iostream.h>
#include <fstream.h>
#include <stdio.h>
#include <string.h>
#include "std-macros.h"
#include "DB.h"
#include "ins_rec.h"
#include "ins_name.h"

class InsDB : public GenericDB
{
   public:

      InsDB () ;
      // Constructs a default InsDB

      InsDB (const InsDB&) ;
      // Constructs a new InsDB from an existing one

      ~InsDB () ;
      // Destructs and InsDB

      void Add (const InsName&) ;
      // Adds an instructor with the given name to the database

      void Add (const InsRecord&) ;
      // Add the given instructor record to the database

      Boolean Delete (const InsName&) ;
      // Deletes the given instructor from the database
      //   Returns true if the operation was successful
      //   Returns false otherwise

      void View (const InsName&) ;
      // Finds the given instructor in the database and displays
      // his/her course and day/time preferences

      InsRecord* GetInstructor () ;
      // Returns the next pickiest instructor in the database.
      // If there are no more instructors, the function returns
      // returns to the beginning and returns the most picky
      // instructor

      void print() const ;
      // Print the database

      void PickySort () ;
      // Sorts the InsDB in order or instructor pickiness.
 
      void Read () ;
      // Read the database from file
};

#endif