heapfilescanner.h

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/*
 * SwatDB
 *
 * @authors: See Contributors.doc for code contributors
 *
 * Copyright (c) 2020 Swarthmore College Computer Science Department
 * Swarthmore PA, Professors Tia Newhall, Ameet Soni
 */
 
#ifndef  _SWATDB_HEAPFILESCANNER_H_
#define  _SWATDB_HEAPFILESCANNER_H_
 
// @@@@ SWATDB_ASSIGNMENT: ADDTODODATE
 
 
#include <string>
#include <vector>
#include <mutex>
#include "swatdb_types.h"
#include "file.h" //for inheritance
 
class HeapPage; 
class HeapFile;
class Record;
class HeapPageScanner;
 
// @@@@ SWATDB_ASSIGNMENT: NOTEMSG DO NOT modify this class other than adding 
// @@@@ SWATDB_ASSIGNMENT: NOTEMSG private helper methods for good design
class HeapFileScanner{
 
  public:
 
    HeapFileScanner(HeapFile* file);
 
    ~HeapFileScanner();
 
    RecordId getNext(Record* record);
 
  private:
 
    BufferManager* buf_mgr;
 
    PageId cur_pid;
 
    HeapPage* cur_page;
 
    HeapPageScanner* scanner;
 
    HeapFile* file;
 
    bool end_of_full;
 
    bool end_of_free;
};
 
 
#endif