/afs/cs.wisc.edu/u/m/o/mohan/private/cs564/btree/btree/src/filescan.h

#pragma once

#include <string>
#include "types.h"
#include "page.h"
#include "buffer.h"
#include "file_iterator.h"
#include "page_iterator.h"

namespace badgerdb {

class FileScan
{
 public:

  FileScan(const std::string &name, BufMgr *bufMgr);

  ~FileScan();

  //return RecordId of next record that satisfies the scan 
  void scanNext(RecordId& outRid);

  //read current record, returning pointer and length
  std::string getRecord();

  //marks current page of scan dirty
  void markDirty();

 private:
  PageFile      *file;

  BufMgr        *bufMgr;

  Page*         curPage;

  FileIterator  filePageIter;
  PageIterator  pageRecordIter;

  bool          curDirtyFlag;
};

}