Tree-M/MT/MTfile.h

/*********************************************************************
*                                                                    *
* Copyright (c) 1997,1998, 1999                                      *
* Multimedia DB Group and DEIS - CSITE-CNR,                          *
* University of Bologna, Bologna, ITALY.                             *
*                                                                    *
* All Rights Reserved.                                               *
*                                                                    *
* Permission to use, copy, and distribute this software and its      *
* documentation for NON-COMMERCIAL purposes and without fee is       *
* hereby granted provided  that this copyright notice appears in     *
* all copies.                                                        *
*                                                                    *
* THE AUTHORS MAKE NO REPRESENTATIONS OR WARRANTIES ABOUT THE        *
* SUITABILITY OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING  *
* BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY,      *
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE AUTHOR  *
* SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A      *
* RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS    *
* DERIVATIVES.                                                       *
*                                                                    *
*********************************************************************/

#ifndef MTFILE_H
#define MTFILE_H

#include "GiSTstore.h"

//      MTfile is a simple storage class for GiSTs to work over 
//      UNIX/NT files. It is a copy of the GiSTfile class.

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

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

        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 65536; }
        int PageSize() const { return 4096; }

private:
        int fileHandle;
};

#endif
Revision:	1.1
Committed:	Sun May 6 00:45:52 2001 UTC (23 years, 1 month ago) by root
Content type:	text/plain
Branch:	MAIN
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/*********************************************************************
2			* *
3			* Copyright (c) 1997,1998, 1999 *
4			* Multimedia DB Group and DEIS - CSITE-CNR, *
5			* University of Bologna, Bologna, ITALY. *
6			* *
7			* All Rights Reserved. *
8			* *
9			* Permission to use, copy, and distribute this software and its *
10			* documentation for NON-COMMERCIAL purposes and without fee is *
11			* hereby granted provided that this copyright notice appears in *
12			* all copies. *
13			* *
14			* THE AUTHORS MAKE NO REPRESENTATIONS OR WARRANTIES ABOUT THE *
15			* SUITABILITY OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING *
16			* BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, *
17			* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE AUTHOR *
18			* SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A *
19			* RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS *
20			* DERIVATIVES. *
21			* *
22			*********************************************************************/
23
24			#ifndef MTFILE_H
25			#define MTFILE_H
26
27			#include "GiSTstore.h"
28
29			// MTfile is a simple storage class for GiSTs to work over
30			// UNIX/NT files. It is a copy of the GiSTfile class.
31
32			class MTfile: public GiSTstore {
33			public:
34			MTfile(): GiSTstore() {}
35
36			void Create(const char *filename);
37			void Open(const char *filename);
38			void Close();
39
40			void Read(GiSTpage page, char *buf);
41			void Write(GiSTpage page, const char *buf);
42			GiSTpage Allocate();
43			void Deallocate(GiSTpage page);
44			void Sync() {}
45			// int PageSize() const { return 65536; }
46			int PageSize() const { return 4096; }
47
48			private:
49			int fileHandle;
50			};
51
52			#endif