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+/************** FilAMVct H Declares Source Code File (.H) **************/
+/* Name: FILAMVCT.H Version 1.5 */
+/* */
+/* (C) Copyright to the author Olivier BERTRAND 2005-2012 */
+/* */
+/* This file contains the VCT file access method classes declares. */
+/***********************************************************************/
+#ifndef __FILAMVCT__
+#define __FILAMVCT__
+
+#include "filamfix.h"
+
+typedef class VCTFAM *PVCTFAM;
+typedef class VCTCOL *PVCTCOL;
+typedef class VCMFAM *PVCMFAM;
+typedef class VECFAM *PVECFAM;
+typedef class VMPFAM *PVMPFAM;
+typedef class BGVFAM *PBGVFAM;
+
+/***********************************************************************/
+/* This is the DOS/UNIX Access Method class declaration for files */
+/* in vector format. If MaxBlk=0, each block containing "Elements" */
+/* records, values of each columns are consecutively stored (vector). */
+/* Otherwise, data is arranged by column in the file and MaxBlk is */
+/* used to set the maximum number of blocks. This leave some white */
+/* space allowing to insert new values up to this maximum size. */
+/***********************************************************************/
+class DllExport VCTFAM : public FIXFAM {
+ friend class TDBVCT;
+ friend class VCTCOL;
+ public:
+ // Constructor
+ VCTFAM(PVCTDEF tdp);
+ VCTFAM(PVCTFAM txfp);
+
+ // Implementation
+ virtual AMT GetAmType(void) {return TYPE_AM_VCT;}
+ virtual PTXF Duplicate(PGLOBAL g)
+ {return (PTXF)new(g) VCTFAM(this);}
+ virtual int GetFileLength(PGLOBAL g);
+
+ // Methods
+ virtual void Reset(void);
+ virtual int MaxBlkSize(PGLOBAL g, int s);
+ virtual bool AllocateBuffer(PGLOBAL g);
+ virtual bool InitInsert(PGLOBAL g);
+ virtual void ResetBuffer(PGLOBAL g) {}
+ virtual int Cardinality(PGLOBAL g);
+ virtual int GetRowID(void);
+
+ // Database routines
+ 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);
+
+ // Specific functions
+ virtual bool ReadBlock(PGLOBAL g, PVCTCOL colp);
+ virtual bool WriteBlock(PGLOBAL g, PVCTCOL colp);
+
+ protected:
+ virtual bool MakeEmptyFile(PGLOBAL g, PCSZ fn);
+ virtual bool OpenTempFile(PGLOBAL g);
+ virtual bool MoveLines(PGLOBAL g) {return false;}
+ virtual bool MoveIntermediateLines(PGLOBAL g, bool *b = NULL);
+ virtual bool CleanUnusedSpace(PGLOBAL g);
+ virtual int GetBlockInfo(PGLOBAL g);
+ virtual bool SetBlockInfo(PGLOBAL g);
+ bool ResetTableSize(PGLOBAL g, int block, int last);
+
+ // Members
+ char *NewBlock; // To block written on Insert
+ char *Colfn; // Pattern for column file names (VEC)
+ char *Tempat; // Pattern for temp file names (VEC)
+ int *Clens; // Pointer to col size array
+ int *Deplac; // Pointer to col start position array
+ bool *Isnum; // Pointer to buffer type isnum result
+ bool AddBlock; // True when adding new blocks on Insert
+ bool Split; // true: split column file vector format
+ int Header; // 0: no, 1: separate, 2: in data file
+ int MaxBlk; // Max number of blocks (True vector format)
+ int Bsize; // Because Nrec can be modified
+ int Ncol; // The number of columns;
+ }; // end of class VCTFAM
+
+/***********************************************************************/
+/* This is the DOS/UNIX Access Method class declaration for files */
+/* in vector format accessed using file mapping. */
+/***********************************************************************/
+class DllExport VCMFAM : public VCTFAM {
+ friend class TDBVCT;
+ friend class VCTCOL;
+ public:
+ // Constructor
+ VCMFAM(PVCTDEF tdp);
+ VCMFAM(PVCMFAM txfp);
+
+ // Implementation
+ virtual AMT GetAmType(void) {return TYPE_AM_VMP;}
+ virtual PTXF Duplicate(PGLOBAL g)
+ {return (PTXF)new(g) VCMFAM(this);}
+
+ // Methods
+ virtual bool AllocateBuffer(PGLOBAL g);
+ virtual bool InitInsert(PGLOBAL g);
+
+ // Database routines
+ virtual bool OpenTableFile(PGLOBAL g);
+ virtual int WriteBuffer(PGLOBAL g);
+ virtual int DeleteRecords(PGLOBAL g, int irc);
+ virtual void CloseTableFile(PGLOBAL g, bool abort);
+
+ protected:
+ // Specific functions
+ virtual bool MoveIntermediateLines(PGLOBAL g, bool *b = NULL);
+ virtual bool ReadBlock(PGLOBAL g, PVCTCOL colp);
+ virtual bool WriteBlock(PGLOBAL g, PVCTCOL colp);
+
+ // Members
+ char* Memory; // Pointer on file mapping view.
+ char* *Memcol; // Pointer on column start.
+ }; // end of class VCMFAM
+
+/***********************************************************************/
+/* This is the DOS/UNIX Access Method class declaration for files */
+/* in full vertical format. Each column is contained in a separate */
+/* file whose name is the table name followed by the column number. */
+/***********************************************************************/
+class DllExport VECFAM : public VCTFAM {
+ friend class TDBVCT;
+ friend class VCTCOL;
+ public:
+ // Constructor
+ VECFAM(PVCTDEF tdp);
+ VECFAM(PVECFAM txfp);
+
+ // Implementation
+ virtual PTXF Duplicate(PGLOBAL g)
+ {return (PTXF)new(g) VECFAM(this);}
+
+ // Methods
+ virtual bool AllocateBuffer(PGLOBAL g);
+ virtual bool InitInsert(PGLOBAL g);
+ virtual void ResetBuffer(PGLOBAL g);
+
+ // Database routines
+ virtual bool OpenTableFile(PGLOBAL g);
+ virtual int WriteBuffer(PGLOBAL g);
+ virtual int DeleteRecords(PGLOBAL g, int irc);
+ virtual void CloseTableFile(PGLOBAL g, bool abort);
+
+ // Specific functions
+ virtual bool ReadBlock(PGLOBAL g, PVCTCOL colp);
+ virtual bool WriteBlock(PGLOBAL g, PVCTCOL colp);
+
+ protected:
+ virtual bool OpenTempFile(PGLOBAL g);
+ virtual bool MoveLines(PGLOBAL g);
+ virtual bool MoveIntermediateLines(PGLOBAL g, bool *b = NULL);
+ virtual int RenameTempFile(PGLOBAL g);
+ bool OpenColumnFile(PGLOBAL g, PCSZ opmode, int i);
+
+ // Members
+ FILE* *Streams; // Points to Dos file structure array
+ FILE* *T_Streams; // Points to temp file structure array
+ PFBLOCK *To_Fbs; // Pointer to file block array
+ PFBLOCK *T_Fbs; // Pointer to temp file block array
+ void* *To_Bufs; // Pointer to col val block array
+ bool InitUpdate; // Used to initialize updating
+ }; // end of class VECFAM
+
+/***********************************************************************/
+/* This is the DOS/UNIX Access Method class declaration for files */
+/* in full vertical format accessed using file mapping. */
+/***********************************************************************/
+class DllExport VMPFAM : public VCMFAM {
+ friend class TDBVCT;
+ friend class VCTCOL;
+ public:
+ // Constructor
+ VMPFAM(PVCTDEF tdp);
+ VMPFAM(PVMPFAM txfp);
+
+ // Implementation
+ virtual PTXF Duplicate(PGLOBAL g)
+ {return (PTXF)new(g) VMPFAM(this);}
+
+ // Methods
+ virtual bool AllocateBuffer(PGLOBAL g);
+
+ // Database routines
+ virtual bool OpenTableFile(PGLOBAL g);
+ virtual int DeleteRecords(PGLOBAL g, int irc);
+ virtual void CloseTableFile(PGLOBAL g, bool abort);
+
+ protected:
+ bool MapColumnFile(PGLOBAL g, MODE mode, int i);
+
+ // Members
+ PFBLOCK *To_Fbs; // Pointer to file block array
+ }; // end of class VMPFAM
+
+/***********************************************************************/
+/* This is the DOS/UNIX Access Method class declaration for files */
+/* in (possibly blocked) vector format that can be larger than 2GB. */
+/***********************************************************************/
+class BGVFAM : public VCTFAM {
+ friend class VCTCOL;
+ public:
+ // Constructors
+ BGVFAM(PVCTDEF tdp);
+ BGVFAM(PBGVFAM txfp);
+
+ // Implementation
+ virtual PTXF Duplicate(PGLOBAL g)
+ {return (PTXF)new(g) BGVFAM(this);}
+
+ // Methods
+ virtual bool AllocateBuffer(PGLOBAL g);
+
+ // Database routines
+ virtual bool OpenTableFile(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);
+
+ // Specific functions
+ virtual bool ReadBlock(PGLOBAL g, PVCTCOL colp);
+ virtual bool WriteBlock(PGLOBAL g, PVCTCOL colp);
+
+ protected:
+ bool BigSeek(PGLOBAL g, HANDLE h, BIGINT pos, bool b = false);
+ bool BigRead(PGLOBAL g, HANDLE h, void *inbuf, int req);
+ bool BigWrite(PGLOBAL g, HANDLE h, void *inbuf, int req);
+ virtual bool MakeEmptyFile(PGLOBAL g, PCSZ fn);
+ virtual bool OpenTempFile(PGLOBAL g);
+ virtual bool MoveIntermediateLines(PGLOBAL g, bool *b = NULL);
+ virtual bool CleanUnusedSpace(PGLOBAL g);
+ virtual bool SetBlockInfo(PGLOBAL g);
+ virtual int GetBlockInfo(PGLOBAL g);
+
+ // Members
+ HANDLE Hfile; // Handle to big file
+ HANDLE Tfile; // Handle to temporary file
+ BIGINT *BigDep; // Pointer to col start position array
+ }; // end of class BGVFAM
+
+#endif // __FILAMVCT__
+