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/*************** BlkFil H Declares Source Code File (.H) ***************/
/* Name: BLKFIL.H Version 2.1 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2004-2010 */
/* */
/* This file contains the block optimization related classes declares */
/***********************************************************************/
#ifndef __BLKFIL__
#define __BLKFIL__
typedef class BLOCKFILTER *PBF;
typedef class BLOCKINDEX *PBX;
/***********************************************************************/
/* Definition of class BLOCKFILTER. */
/***********************************************************************/
class DllExport BLOCKFILTER : public BLOCK { /* Block Filter */
friend class BLKFILLOG;
public:
// Constructors
BLOCKFILTER(PTDBDOS tdbp, int op);
// Implementation
int GetResult(void) {return Result;}
bool Correlated(void) {return Correl;}
// Methods
virtual void Reset(PGLOBAL) = 0;
virtual int BlockEval(PGLOBAL) = 0;
virtual void Printf(PGLOBAL g, FILE *f, uint n);
virtual void Prints(PGLOBAL g, char *ps, uint z);
protected:
BLOCKFILTER(void) {} // Standard constructor not to be used
// Members
PTDBDOS Tdbp; // Owner TDB
bool Correl; // TRUE for correlated subqueries
int Opc; // Comparison operator
int Opm; // Operator modificator
int Result; // Result from evaluation
}; // end of class BLOCKFILTER
/***********************************************************************/
/* Definition of class BLKFILLOG (with Op=OP_AND,OP_OR, or OP_NOT) */
/***********************************************************************/
class DllExport BLKFILLOG : public BLOCKFILTER { /* Logical Op Block Filter */
public:
// Constructors
BLKFILLOG(PTDBDOS tdbp, int op, PBF *bfp, int n);
// Methods
virtual void Reset(PGLOBAL g);
virtual int BlockEval(PGLOBAL g);
protected:
BLKFILLOG(void) {} // Standard constructor not to be used
// Members
PBF *Fil; // Points to Block filter args
int N;
}; // end of class BLKFILLOG
/***********************************************************************/
/* Definition of class BLKFILARI (with Op=OP_EQ,NE,GT,GE,LT, or LE) */
/***********************************************************************/
class DllExport BLKFILARI : public BLOCKFILTER { /* Arithm. Op Block Filter */
public:
// Constructors
BLKFILARI(PGLOBAL g, PTDBDOS tdbp, int op, PXOB *xp);
// Methods
virtual void Reset(PGLOBAL g);
virtual int BlockEval(PGLOBAL g);
virtual void MakeValueBitmap(void) {}
protected:
BLKFILARI(void) {} // Standard constructor not to be used
// Members
PDOSCOL Colp; // Points to column argument
PCOL Cpx; // Point to subquery "constant" column
PVAL Valp; // Points to constant argument Value
bool Sorted; // True if the column is sorted
}; // end of class BLKFILARI
/***********************************************************************/
/* Definition of class BLKFILAR2 (with Op=OP_EQ,NE,GT,GE,LT, or LE) */
/***********************************************************************/
class DllExport BLKFILAR2 : public BLKFILARI { /* Arithm. Op Block Filter */
public:
// Constructors
BLKFILAR2(PGLOBAL g, PTDBDOS tdbp, int op, PXOB *xp);
// Methods
virtual int BlockEval(PGLOBAL g);
virtual void MakeValueBitmap(void);
protected:
BLKFILAR2(void) {} // Standard constructor not to be used
// Members
uint Bmp; // The value bitmap used to test blocks
uint Bxp; // Bitmap used when Opc = OP_EQ
}; // end of class BLKFILAR2
/***********************************************************************/
/* Definition of class BLKFILAR2 (with Op=OP_EQ,NE,GT,GE,LT, or LE) */
/* To be used when the bitmap is an array of ULONG bitmaps; */
/***********************************************************************/
class DllExport BLKFILMR2 : public BLKFILARI { /* Arithm. Op Block Filter */
public:
// Constructors
BLKFILMR2(PGLOBAL g, PTDBDOS tdbp, int op, PXOB *xp);
// Methods
virtual int BlockEval(PGLOBAL g);
virtual void MakeValueBitmap(void);
protected:
BLKFILMR2(void) {} // Standard constructor not to be used
// Members
int Nbm; // The number of ULONG bitmaps
int N; // The position of the leftmost ULONG
bool Void; // True if all file blocks can be skipped
uint *Bmp; // The values bitmaps used to test blocks
uint *Bxp; // Bit of values <= max value
}; // end of class BLKFILMR2
/***********************************************************************/
/* Definition of class BLKSPCARI (with Op=OP_EQ,NE,GT,GE,LT, or LE) */
/***********************************************************************/
class DllExport BLKSPCARI : public BLOCKFILTER { /* Arithm. Op Block Filter */
public:
// Constructors
BLKSPCARI(PTDBDOS tdbp, int op, PXOB *xp, int bsize);
// Methods
virtual void Reset(PGLOBAL g);
virtual int BlockEval(PGLOBAL g);
protected:
BLKSPCARI(void) {} // Standard constructor not to be used
// Members
PCOL Cpx; // Point to subquery "constant" column
PVAL Valp; // Points to constant argument Value
int Val; // Constant argument Value
int Bsize; // Table block size
}; // end of class BLKSPCARI
/***********************************************************************/
/* Definition of class BLKFILIN (with Op=OP_IN) */
/***********************************************************************/
class DllExport BLKFILIN : public BLOCKFILTER { // With array arguments.
public:
// Constructors
BLKFILIN(PGLOBAL g, PTDBDOS tdbp, int op, int opm, PXOB *xp);
// Methods
virtual void Reset(PGLOBAL g);
virtual int BlockEval(PGLOBAL g);
virtual void MakeValueBitmap(void) {}
protected:
// Member
PDOSCOL Colp; // Points to column argument
PARRAY Arap; // Points to array argument
bool Sorted; // True if the column is sorted
int Type; // Type of array elements
}; // end of class BLKFILIN
/***********************************************************************/
/* Definition of class BLKFILIN2 (with Op=OP_IN) */
/***********************************************************************/
class DllExport BLKFILIN2 : public BLKFILIN { // With array arguments.
public:
// Constructors
BLKFILIN2(PGLOBAL g, PTDBDOS tdbp, int op, int opm, PXOB *xp);
// Methods
//virtual void Reset(PGLOBAL g);
virtual int BlockEval(PGLOBAL g);
virtual void MakeValueBitmap(void);
protected:
// Member
int Nbm; // The number of ULONG bitmaps
int N; // The position of the leftmost ULONG
//bool Bitmap; // True for IN operator (temporary)
bool Void; // True if all file blocks can be skipped
bool Invert; // True when Result must be inverted
uint *Bmp; // The values bitmaps used to test blocks
uint *Bxp; // Bit of values <= max value
PVAL Valp; // Used while building the bitmaps
}; // end of class BLKFILIN2
/***********************************************************************/
/* Definition of class BLKSPCIN (with Op=OP_IN) Special column */
/***********************************************************************/
class DllExport BLKSPCIN : public BLOCKFILTER { // With array arguments.
public:
// Constructors
BLKSPCIN(PGLOBAL g, PTDBDOS tdbp, int op, int opm, PXOB *xp, int bsize);
// Methods
virtual void Reset(PGLOBAL g);
virtual int BlockEval(PGLOBAL g);
protected:
// Member
PARRAY Arap; // Points to array argument
int Bsize; // Table block size
}; // end of class BLKSPCIN
// ---------------- Class used in block indexing testing ----------------
#if 0
/***********************************************************************/
/* Definition of class BLOCKINDEX. */
/* Used to test the indexing to joined tables when the foreign key is */
/* a clustered or sorted column. If the table is joined to several */
/* tables, blocks will be chained together. */
/***********************************************************************/
class DllExport BLOCKINDEX : public BLOCK { /* Indexing Test Block */
public:
// Constructors
BLOCKINDEX(PBX nx, PDOSCOL cp, PKXBASE kp);
// Implementation
PBX GetNext(void) {return Next;}
// Methods
void Reset(void);
virtual int BlockEval(PGLOBAL);
virtual void Printf(PGLOBAL g, FILE *f, UINT n);
virtual void Prints(PGLOBAL g, char *ps, UINT z);
protected:
BLOCKINDEX(void) {} // Standard constructor not to be used
// Members
PBX Next; // To next Index Block
PTDBDOS Tdbp; // To table description block
PDOSCOL Colp; // Clustered foreign key
PKXBASE Kxp; // To Kindex of joined table
bool Sorted; // TRUE if column is sorted
int Type; // Col/Index type
int Result; // Result from evaluation
}; // end of class BLOCKINDEX
/***********************************************************************/
/* Definition of class BLOCKINDX2. (XDB2) */
/***********************************************************************/
class DllExport BLOCKINDX2 : public BLOCKINDEX { /* Indexing Test Block */
public:
// Constructors
BLOCKINDX2(PBX nx, PDOSCOL cp, PKXBASE kp);
// Methods
virtual int BlockEval(PGLOBAL);
protected:
BLOCKINDX2(void) {} // Standard constructor not to be used
// Members
int Nbm; // The number of ULONG bitmaps
PVBLK Dval; // Array of column distinct values
PVBLK Bmap; // Array of block bitmap values
}; // end of class BLOCKINDX2
/***********************************************************************/
/* Definition of class BLKSPCINDX. */
/* Used to test the indexing to joined tables when the foreign key is */
/* the ROWID special column. If the table is joined to several */
/* tables, blocks will be chained together. */
/***********************************************************************/
class DllExport BLKSPCINDX : public BLOCKINDEX { /* Indexing Test Block */
public:
// Constructors
BLKSPCINDX(PBX nx, PTDBDOS tp, PKXBASE kp, int bsize);
// Methods
virtual int BlockEval(PGLOBAL);
protected:
BLKSPCINDX(void) {} // Standard constructor not to be used
// Members
int Bsize; // Table block size
}; // end of class BLOCKINDEX
#endif // 0
#endif // __BLKFIL__
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