gistfile.h

此文件包含了在linux下实现tpr-tree索引的源代码

// -*- Mode: C++ -*-
//--------------------------------------------------------------------
//        GiSTfile.h
//        ----------
//
//        GiST - Generalized Search Tree 
//        June 2001 release, Aalborg University
//        
//        This file is a revised version of a part of the original 
//        libGiST release (version  0.9beta1)     
//        Copyright (c) 1996, Regents of the University of California
//

#ifndef GISTFILE_H
#define GISTFILE_H

#include "GiSTstore.h"

//--------------------------------------------------------------------
//  GiSTfile is a simple storage class for GiSTs to work over
//  UNIX/NT files.
//

class GiSTfile : public GiSTstore
{
public:
  GiSTfile() : GiSTstore() {}

  void     Create(const char *filename);
  void     Open  (const char *filename);
  void     Close ();
  void     Reset ();

  void     Read    (GiSTpage page, char *buf);
  void     Write   (GiSTpage page, const char *buf);
  GiSTpage Allocate();
  void     Deallocate(GiSTpage page);
  void     Sync    () {}
  int      PageSize() const { return 1024; }

private:
  GiSTpage maxPage;
  int      fileHandle;
};

#endif