diff options
Diffstat (limited to 'storage/connect/filamzip.h')
-rw-r--r-- | storage/connect/filamzip.h | 338 |
1 files changed, 169 insertions, 169 deletions
diff --git a/storage/connect/filamzip.h b/storage/connect/filamzip.h index 6d27cb67e81..edb8b5db323 100644 --- a/storage/connect/filamzip.h +++ b/storage/connect/filamzip.h @@ -1,170 +1,170 @@ -/************** FilAmZip H Declares Source Code File (.H) **************/
-/* Name: FILAMZIP.H Version 1.2 */
-/* */
-/* (C) Copyright to the author Olivier BERTRAND 2005-2014 */
-/* */
-/* This file contains the GZIP access method classes declares. */
-/***********************************************************************/
-#ifndef __FILAMZIP_H
-#define __FILAMZIP_H
-
-#include "zlib.h"
-
-typedef class ZIPFAM *PZIPFAM;
-typedef class ZBKFAM *PZBKFAM;
-typedef class ZIXFAM *PZIXFAM;
-typedef class ZLBFAM *PZLBFAM;
-
-/***********************************************************************/
-/* This is the access method class declaration for not optimized */
-/* variable record length files compressed using the gzip library */
-/* functions. File is accessed record by record (row). */
-/***********************************************************************/
-class DllExport ZIPFAM : public TXTFAM {
-// friend class DOSCOL;
- public:
- // Constructor
- ZIPFAM(PDOSDEF tdp) : TXTFAM(tdp) {Zfile = NULL; Zpos = 0;}
- ZIPFAM(PZIPFAM txfp);
-
- // Implementation
- virtual AMT GetAmType(void) {return TYPE_AM_ZIP;}
- virtual int GetPos(void);
- virtual int GetNextPos(void);
- virtual PTXF Duplicate(PGLOBAL g)
- {return (PTXF)new(g) ZIPFAM(this);}
-
- // Methods
- virtual void Reset(void);
- virtual int GetFileLength(PGLOBAL g);
- virtual int Cardinality(PGLOBAL g) {return (g) ? -1 : 0;}
- virtual int MaxBlkSize(PGLOBAL g, int s) {return s;}
- virtual bool AllocateBuffer(PGLOBAL g);
- virtual int GetRowID(void);
- virtual bool RecordPos(PGLOBAL g);
- virtual bool SetPos(PGLOBAL g, int recpos);
- virtual int SkipRecord(PGLOBAL g, bool header);
- virtual bool OpenTableFile(PGLOBAL g);
- virtual int ReadBuffer(PGLOBAL g);
- virtual int WriteBuffer(PGLOBAL g);
- virtual int DeleteRecords(PGLOBAL g, int irc);
- virtual void CloseTableFile(PGLOBAL g, bool abort);
- virtual void Rewind(void);
-
- protected:
- int Zerror(PGLOBAL g); // GZ error function
-
- // Members
- gzFile Zfile; // Points to GZ file structure
- z_off_t Zpos; // Uncompressed file position
- }; // end of class ZIPFAM
-
-/***********************************************************************/
-/* This is the access method class declaration for optimized variable */
-/* record length files compressed using the gzip library functions. */
-/* The File is accessed by block (requires an opt file). */
-/***********************************************************************/
-class DllExport ZBKFAM : public ZIPFAM {
- public:
- // Constructor
- ZBKFAM(PDOSDEF tdp);
- ZBKFAM(PZBKFAM txfp);
-
- // Implementation
- virtual int GetPos(void);
- virtual int GetNextPos(void) {return 0;}
- virtual PTXF Duplicate(PGLOBAL g)
- {return (PTXF)new(g) ZBKFAM(this);}
-
- // Methods
- virtual int Cardinality(PGLOBAL g);
- virtual int MaxBlkSize(PGLOBAL g, int s);
- virtual bool AllocateBuffer(PGLOBAL g);
- virtual int GetRowID(void);
- virtual bool RecordPos(PGLOBAL g);
- virtual int SkipRecord(PGLOBAL g, bool header);
- virtual int ReadBuffer(PGLOBAL g);
- virtual int WriteBuffer(PGLOBAL g);
- virtual int DeleteRecords(PGLOBAL g, int irc);
- virtual void CloseTableFile(PGLOBAL g, bool abort);
- virtual void Rewind(void);
-
- protected:
- // Members
- char *CurLine; // Position of current line in buffer
- char *NxtLine; // Position of Next line in buffer
- bool Closing; // True when closing on Insert
- }; // end of class ZBKFAM
-
-/***********************************************************************/
-/* This is the access method class declaration for fixed record */
-/* length files compressed using the gzip library functions. */
-/* The file is always accessed by block. */
-/***********************************************************************/
-class DllExport ZIXFAM : public ZBKFAM {
- public:
- // Constructor
- ZIXFAM(PDOSDEF tdp);
- ZIXFAM(PZIXFAM txfp) : ZBKFAM(txfp) {}
-
- // Implementation
- virtual int GetNextPos(void) {return 0;}
- virtual PTXF Duplicate(PGLOBAL g)
- {return (PTXF)new(g) ZIXFAM(this);}
-
- // Methods
- virtual int Cardinality(PGLOBAL g);
- virtual bool AllocateBuffer(PGLOBAL g);
- virtual int ReadBuffer(PGLOBAL g);
- virtual int WriteBuffer(PGLOBAL g);
-
- protected:
- // No additional Members
- }; // end of class ZIXFAM
-
-/***********************************************************************/
-/* This is the DOS/UNIX Access Method class declaration for PlugDB */
-/* fixed/variable files compressed using the zlib library functions. */
-/* Physically these are written and read using the same technique */
-/* than blocked variable files, only the contain of each block is */
-/* compressed using the deflate zlib function. The purpose of this */
-/* specific format is to have a fast mechanism for direct access of */
-/* records so blocked optimization is fast and direct access (joins) */
-/* is allowed. Note that the block length is written ahead of each */
-/* block to enable reading when optimization file is not available. */
-/***********************************************************************/
-class DllExport ZLBFAM : public BLKFAM {
- public:
- // Constructor
- ZLBFAM(PDOSDEF tdp);
- ZLBFAM(PZLBFAM txfp);
-
- // Implementation
- virtual AMT GetAmType(void) {return TYPE_AM_ZLIB;}
- virtual int GetPos(void);
- virtual int GetNextPos(void);
- virtual PTXF Duplicate(PGLOBAL g)
- {return (PTXF)new(g) ZLBFAM(this);}
- inline void SetOptimized(bool b) {Optimized = b;}
-
- // Methods
- virtual int GetFileLength(PGLOBAL g);
+/************** FilAmZip H Declares Source Code File (.H) **************/ +/* Name: FILAMZIP.H Version 1.2 */ +/* */ +/* (C) Copyright to the author Olivier BERTRAND 2005-2014 */ +/* */ +/* This file contains the GZIP access method classes declares. */ +/***********************************************************************/ +#ifndef __FILAMZIP_H +#define __FILAMZIP_H + +#include "zlib.h" + +typedef class ZIPFAM *PZIPFAM; +typedef class ZBKFAM *PZBKFAM; +typedef class ZIXFAM *PZIXFAM; +typedef class ZLBFAM *PZLBFAM; + +/***********************************************************************/ +/* This is the access method class declaration for not optimized */ +/* variable record length files compressed using the gzip library */ +/* functions. File is accessed record by record (row). */ +/***********************************************************************/ +class DllExport ZIPFAM : public TXTFAM { +// friend class DOSCOL; + public: + // Constructor + ZIPFAM(PDOSDEF tdp) : TXTFAM(tdp) {Zfile = NULL; Zpos = 0;} + ZIPFAM(PZIPFAM txfp); + + // Implementation + virtual AMT GetAmType(void) {return TYPE_AM_ZIP;} + virtual int GetPos(void); + virtual int GetNextPos(void); + virtual PTXF Duplicate(PGLOBAL g) + {return (PTXF)new(g) ZIPFAM(this);} + + // Methods + virtual void Reset(void); + virtual int GetFileLength(PGLOBAL g); + virtual int Cardinality(PGLOBAL g) {return (g) ? -1 : 0;} + virtual int MaxBlkSize(PGLOBAL g, int s) {return s;} + virtual bool AllocateBuffer(PGLOBAL g); + virtual int GetRowID(void); + virtual bool RecordPos(PGLOBAL g); virtual bool SetPos(PGLOBAL g, int recpos); - virtual bool AllocateBuffer(PGLOBAL g);
- virtual int ReadBuffer(PGLOBAL g);
- virtual int WriteBuffer(PGLOBAL g);
- virtual void CloseTableFile(PGLOBAL g, bool abort);
- virtual void Rewind(void);
-
- protected:
- bool WriteCompressedBuffer(PGLOBAL g);
- int ReadCompressedBuffer(PGLOBAL g, void *rdbuf);
-
- // Members
- z_streamp Zstream; // Compression/decompression stream
- Byte *Zbuffer; // Compressed block buffer
- int *Zlenp; // Pointer to block length
- bool Optimized; // true when opt file is available
- }; // end of class ZLBFAM
-
-#endif // __FILAMZIP_H
+ virtual int SkipRecord(PGLOBAL g, bool header); + virtual bool OpenTableFile(PGLOBAL g); + virtual int ReadBuffer(PGLOBAL g); + virtual int WriteBuffer(PGLOBAL g); + virtual int DeleteRecords(PGLOBAL g, int irc); + virtual void CloseTableFile(PGLOBAL g, bool abort); + virtual void Rewind(void); + + protected: + int Zerror(PGLOBAL g); // GZ error function + + // Members + gzFile Zfile; // Points to GZ file structure + z_off_t Zpos; // Uncompressed file position + }; // end of class ZIPFAM + +/***********************************************************************/ +/* This is the access method class declaration for optimized variable */ +/* record length files compressed using the gzip library functions. */ +/* The File is accessed by block (requires an opt file). */ +/***********************************************************************/ +class DllExport ZBKFAM : public ZIPFAM { + public: + // Constructor + ZBKFAM(PDOSDEF tdp); + ZBKFAM(PZBKFAM txfp); + + // Implementation + virtual int GetPos(void); + virtual int GetNextPos(void) {return 0;} + virtual PTXF Duplicate(PGLOBAL g) + {return (PTXF)new(g) ZBKFAM(this);} + + // Methods + virtual int Cardinality(PGLOBAL g); + virtual int MaxBlkSize(PGLOBAL g, int s); + virtual bool AllocateBuffer(PGLOBAL g); + virtual int GetRowID(void); + virtual bool RecordPos(PGLOBAL g); + virtual int SkipRecord(PGLOBAL g, bool header); + virtual int ReadBuffer(PGLOBAL g); + virtual int WriteBuffer(PGLOBAL g); + virtual int DeleteRecords(PGLOBAL g, int irc); + virtual void CloseTableFile(PGLOBAL g, bool abort); + virtual void Rewind(void); + + protected: + // Members + char *CurLine; // Position of current line in buffer + char *NxtLine; // Position of Next line in buffer + bool Closing; // True when closing on Insert + }; // end of class ZBKFAM + +/***********************************************************************/ +/* This is the access method class declaration for fixed record */ +/* length files compressed using the gzip library functions. */ +/* The file is always accessed by block. */ +/***********************************************************************/ +class DllExport ZIXFAM : public ZBKFAM { + public: + // Constructor + ZIXFAM(PDOSDEF tdp); + ZIXFAM(PZIXFAM txfp) : ZBKFAM(txfp) {} + + // Implementation + virtual int GetNextPos(void) {return 0;} + virtual PTXF Duplicate(PGLOBAL g) + {return (PTXF)new(g) ZIXFAM(this);} + + // Methods + virtual int Cardinality(PGLOBAL g); + virtual bool AllocateBuffer(PGLOBAL g); + virtual int ReadBuffer(PGLOBAL g); + virtual int WriteBuffer(PGLOBAL g); + + protected: + // No additional Members + }; // end of class ZIXFAM + +/***********************************************************************/ +/* This is the DOS/UNIX Access Method class declaration for PlugDB */ +/* fixed/variable files compressed using the zlib library functions. */ +/* Physically these are written and read using the same technique */ +/* than blocked variable files, only the contain of each block is */ +/* compressed using the deflate zlib function. The purpose of this */ +/* specific format is to have a fast mechanism for direct access of */ +/* records so blocked optimization is fast and direct access (joins) */ +/* is allowed. Note that the block length is written ahead of each */ +/* block to enable reading when optimization file is not available. */ +/***********************************************************************/ +class DllExport ZLBFAM : public BLKFAM { + public: + // Constructor + ZLBFAM(PDOSDEF tdp); + ZLBFAM(PZLBFAM txfp); + + // Implementation + virtual AMT GetAmType(void) {return TYPE_AM_ZLIB;} + virtual int GetPos(void); + virtual int GetNextPos(void); + virtual PTXF Duplicate(PGLOBAL g) + {return (PTXF)new(g) ZLBFAM(this);} + inline void SetOptimized(bool b) {Optimized = b;} + + // Methods + virtual int GetFileLength(PGLOBAL g); + virtual bool SetPos(PGLOBAL g, int recpos); + virtual bool AllocateBuffer(PGLOBAL g); + virtual int ReadBuffer(PGLOBAL g); + virtual int WriteBuffer(PGLOBAL g); + virtual void CloseTableFile(PGLOBAL g, bool abort); + virtual void Rewind(void); + + protected: + bool WriteCompressedBuffer(PGLOBAL g); + int ReadCompressedBuffer(PGLOBAL g, void *rdbuf); + + // Members + z_streamp Zstream; // Compression/decompression stream + Byte *Zbuffer; // Compressed block buffer + int *Zlenp; // Pointer to block length + bool Optimized; // true when opt file is available + }; // end of class ZLBFAM + +#endif // __FILAMZIP_H |