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/*************** Valblk H Declares Source Code File (.H) ***************/
/* Name: VALBLK.H Version 2.1 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2005-2014 */
/* */
/* This file contains the VALBLK and derived classes declares. */
/***********************************************************************/
/***********************************************************************/
/* Include required application header files */
/* assert.h is header required when using the assert function. */
/* block.h is header containing Block global declarations. */
/***********************************************************************/
#ifndef __VALBLK__H__
#define __VALBLK__H__
#include "value.h"
/***********************************************************************/
/* Utility used to allocate value blocks. */
/***********************************************************************/
DllExport PVBLK AllocValBlock(PGLOBAL, void*, int, int, int, int,
bool, bool, bool);
const char *GetFmt(int type, bool un = false);
/***********************************************************************/
/* DB static external variables. */
/***********************************************************************/
extern MBLOCK Nmblk; /* Used to initialize MBLOCK's */
/***********************************************************************/
/* Class MBVALS is a utility class for (re)allocating VALBLK's. */
/***********************************************************************/
class MBVALS : public BLOCK {
//friend class LSTBLK;
friend class ARRAY;
public:
// Constructors
MBVALS(void) {Vblk = NULL; Mblk = Nmblk;}
// Methods
void *GetMemp(void) {return Mblk.Memp;}
PVBLK Allocate(PGLOBAL g, int type, int len, int prec,
int n, bool sub = false);
bool ReAllocate(PGLOBAL g, int n);
void Free(void);
protected:
// Members
PVBLK Vblk; // Pointer to VALBLK
MBLOCK Mblk; // The memory block
}; // end of class MBVALS
typedef class MBVALS *PMBV;
/***********************************************************************/
/* Class VALBLK represent a base class for variable blocks. */
/***********************************************************************/
class VALBLK : public BLOCK {
public:
// Constructors
VALBLK(void *mp, int type, int nval, bool un = false);
// Implementation
int GetNval(void) {return Nval;}
void SetNval(int n) {Nval = n;}
void *GetValPointer(void) {return Blkp;}
void SetValPointer(void *mp) {Blkp = mp;}
int GetType(void) {return Type;}
int GetPrec(void) {return Prec;}
void SetCheck(bool b) {Check = b;}
void MoveNull(int i, int j)
{if (To_Nulls) To_Nulls[j] = To_Nulls[i];}
virtual void SetNull(int n, bool b)
{if (To_Nulls) {To_Nulls[n] = (b) ? '*' : 0;}}
virtual bool IsNull(int n) {return To_Nulls && To_Nulls[n];}
virtual bool IsNullable(void) {return Nullable;}
virtual void SetNullable(bool b);
virtual bool IsUnsigned(void) {return Unsigned;}
virtual bool Init(PGLOBAL g, bool check) = 0;
virtual int GetVlen(void) = 0;
virtual PSZ GetCharValue(int n);
virtual char GetTinyValue(int n) = 0;
virtual uchar GetUTinyValue(int n) = 0;
virtual short GetShortValue(int n) = 0;
virtual ushort GetUShortValue(int n) = 0;
virtual int GetIntValue(int n) = 0;
virtual uint GetUIntValue(int n) = 0;
virtual longlong GetBigintValue(int n) = 0;
virtual ulonglong GetUBigintValue(int n) = 0;
virtual double GetFloatValue(int n) = 0;
virtual char *GetCharString(char *p, int n) = 0;
virtual void ReAlloc(void *mp, int n) {Blkp = mp; Nval = n;}
virtual void Reset(int n) = 0;
virtual bool SetFormat(PGLOBAL g, PCSZ fmt, int len, int year = 0);
virtual void SetPrec(int p) {}
virtual bool IsCi(void) {return false;}
// Methods
virtual void SetValue(short, int) {assert(false);}
virtual void SetValue(ushort, int) {assert(false);}
virtual void SetValue(int, int) {assert(false);}
virtual void SetValue(uint, int) {assert(false);}
virtual void SetValue(longlong, int) {assert(false);}
virtual void SetValue(ulonglong, int) {assert(false);}
virtual void SetValue(double, int) {assert(false);}
virtual void SetValue(char, int) {assert(false);}
virtual void SetValue(uchar, int) {assert(false);}
virtual void SetValue(PCSZ, int) {assert(false);}
virtual void SetValue(const char *, uint, int) {assert(false);}
virtual void SetValue(PVAL valp, int n) = 0;
virtual void SetValue(PVBLK pv, int n1, int n2) = 0;
virtual void SetMin(PVAL valp, int n) = 0;
virtual void SetMax(PVAL valp, int n) = 0;
virtual void Move(int i, int j) = 0;
virtual int CompVal(PVAL vp, int n) = 0;
virtual int CompVal(int i1, int i2) = 0;
virtual void *GetValPtr(int n) = 0;
virtual void *GetValPtrEx(int n) = 0;
virtual int Find(PVAL vp) = 0;
virtual int GetMaxLength(void) = 0;
bool Locate(PVAL vp, int& i);
protected:
bool AllocBuff(PGLOBAL g, size_t size);
void ChkIndx(int n);
void ChkTyp(PVAL v);
void ChkTyp(PVBLK vb);
// Members
PGLOBAL Global; // Used for messages and allocation
MBLOCK Mblk; // Used to allocate buffer
char *To_Nulls; // Null values array
void *Blkp; // To value block
bool Check; // If true SetValue types must match
bool Nullable; // True if values can be null
bool Unsigned; // True if values are unsigned
int Type; // Type of individual values
int Nval; // Max number of values in block
int Prec; // Precision of float values
}; // end of class VALBLK
/***********************************************************************/
/* Class TYPBLK: represents a block of typed values. */
/***********************************************************************/
template <class TYPE>
class TYPBLK : public VALBLK {
public:
// Constructors
TYPBLK(void *mp, int size, int type, int prec = 0, bool un = false);
// Implementation
virtual bool Init(PGLOBAL g, bool check);
virtual int GetVlen(void) {return sizeof(TYPE);}
virtual char GetTinyValue(int n) {return (char)UnalignedRead(n);}
virtual uchar GetUTinyValue(int n) {return (uchar)UnalignedRead(n);}
virtual short GetShortValue(int n) {return (short)UnalignedRead(n);}
virtual ushort GetUShortValue(int n) {return (ushort)UnalignedRead(n);}
virtual int GetIntValue(int n) {return (int)UnalignedRead(n);}
virtual uint GetUIntValue(int n) {return (uint)UnalignedRead(n);}
virtual longlong GetBigintValue(int n) {return (longlong)UnalignedRead(n);}
virtual ulonglong GetUBigintValue(int n) {return (ulonglong)UnalignedRead(n);}
virtual double GetFloatValue(int n) {return (double)UnalignedRead(n);}
virtual char *GetCharString(char *p, int n);
virtual void Reset(int n) {UnalignedWrite(n, 0);}
// Methods
using VALBLK::SetValue;
virtual void SetValue(PCSZ sp, int n);
virtual void SetValue(const char *sp, uint len, int n);
virtual void SetValue(short sval, int n)
{UnalignedWrite(n, (TYPE)sval); SetNull(n, false);}
virtual void SetValue(ushort sval, int n)
{UnalignedWrite(n, (TYPE)sval); SetNull(n, false);}
virtual void SetValue(int lval, int n)
{UnalignedWrite(n, (TYPE)lval); SetNull(n, false);}
virtual void SetValue(uint lval, int n)
{UnalignedWrite(n, (TYPE)lval); SetNull(n, false);}
virtual void SetValue(longlong lval, int n)
{UnalignedWrite(n, (TYPE)lval); SetNull(n, false);}
virtual void SetValue(ulonglong lval, int n)
{UnalignedWrite(n, (TYPE)lval); SetNull(n, false);}
virtual void SetValue(double fval, int n)
{UnalignedWrite(n, (TYPE)fval); SetNull(n, false);}
virtual void SetValue(char cval, int n)
{UnalignedWrite(n, (TYPE)cval); SetNull(n, false);}
virtual void SetValue(uchar cval, int n)
{UnalignedWrite(n, (TYPE)cval); SetNull(n, false);}
virtual void SetValue(PVAL valp, int n);
virtual void SetValue(PVBLK pv, int n1, int n2);
virtual void SetMin(PVAL valp, int n);
virtual void SetMax(PVAL valp, int n);
virtual void Move(int i, int j);
virtual int CompVal(PVAL vp, int n);
virtual int CompVal(int i1, int i2);
virtual void *GetValPtr(int n);
virtual void *GetValPtrEx(int n);
virtual int Find(PVAL vp);
virtual int GetMaxLength(void);
protected:
// Specialized functions
static ulonglong MaxVal(void);
TYPE GetTypedValue(PVAL vp);
TYPE GetTypedValue(PVBLK blk, int n);
// Members
TYPE* const &Typp;
const char *Fmt;
// Unaligned access
TYPE UnalignedRead(int n) const {
TYPE result;
memcpy(&result, Typp + n, sizeof(TYPE));
return result;
}
void UnalignedWrite(int n, TYPE value) {
memcpy(Typp + n, &value, sizeof(TYPE));
}
}; // end of class TYPBLK
/***********************************************************************/
/* Class CHRBLK: represent a block of fixed length strings. */
/***********************************************************************/
class CHRBLK : public VALBLK {
public:
// Constructors
CHRBLK(void *mp, int size, int type, int len, int prec, bool b);
// Implementation
virtual bool Init(PGLOBAL g, bool check);
virtual int GetVlen(void) {return Long;}
virtual PSZ GetCharValue(int n);
virtual char GetTinyValue(int n);
virtual uchar GetUTinyValue(int n);
virtual short GetShortValue(int n);
virtual ushort GetUShortValue(int n);
virtual int GetIntValue(int n);
virtual uint GetUIntValue(int n);
virtual longlong GetBigintValue(int n);
virtual ulonglong GetUBigintValue(int n);
virtual double GetFloatValue(int n);
virtual char *GetCharString(char *p, int n);
virtual void Reset(int n);
virtual void SetPrec(int p) {Ci = (p != 0);}
virtual bool IsCi(void) {return Ci;}
// Methods
using VALBLK::SetValue;
virtual void SetValue(PCSZ sp, int n);
virtual void SetValue(const char *sp, uint len, int n);
virtual void SetValue(PVAL valp, int n);
virtual void SetValue(PVBLK pv, int n1, int n2);
virtual void SetMin(PVAL valp, int n);
virtual void SetMax(PVAL valp, int n);
virtual void Move(int i, int j);
virtual int CompVal(PVAL vp, int n);
virtual int CompVal(int i1, int i2);
virtual void *GetValPtr(int n);
virtual void *GetValPtrEx(int n);
virtual int Find(PVAL vp);
virtual int GetMaxLength(void);
protected:
// Members
char* const &Chrp; // Pointer to char buffer
PSZ Valp; // Used to make a zero ended value
bool Blanks; // True for right filling with blanks
bool Ci; // True if case insensitive
int Long; // Length of each string
}; // end of class CHRBLK
/***********************************************************************/
/* Class STRBLK: represent a block of string pointers. */
/* Currently this class is used only by the DECODE scalar function */
/* and by the MyColumn function to store date formats. */
/***********************************************************************/
class STRBLK : public VALBLK {
public:
// Constructors
STRBLK(PGLOBAL g, void *mp, int size, int type);
// Implementation
virtual void SetNull(int n, bool b) {if (b) {Strp[n] = NULL;}}
virtual bool IsNull(int n) {return Strp[n] == NULL;}
virtual void SetNullable(bool) {} // Always nullable
virtual bool Init(PGLOBAL g, bool check);
virtual int GetVlen(void) {return sizeof(PSZ);}
virtual PSZ GetCharValue(int n) {return Strp[n];}
virtual char GetTinyValue(int n);
virtual uchar GetUTinyValue(int n);
virtual short GetShortValue(int n);
virtual ushort GetUShortValue(int n);
virtual int GetIntValue(int n);
virtual uint GetUIntValue(int n);
virtual longlong GetBigintValue(int n);
virtual ulonglong GetUBigintValue(int n);
virtual double GetFloatValue(int n) {return atof(Strp[n]);}
virtual char *GetCharString(char *, int n) {return Strp[n];}
virtual void Reset(int n) {Strp[n] = NULL;}
// Methods
using VALBLK::SetValue;
virtual void SetValue(PCSZ sp, int n);
virtual void SetValue(const char *sp, uint len, int n);
virtual void SetValue(PVAL valp, int n);
virtual void SetValue(PVBLK pv, int n1, int n2);
virtual void SetMin(PVAL valp, int n);
virtual void SetMax(PVAL valp, int n);
virtual void Move(int i, int j);
virtual int CompVal(PVAL vp, int n);
virtual int CompVal(int i1, int i2);
virtual void *GetValPtr(int n);
virtual void *GetValPtrEx(int n);
virtual int Find(PVAL vp);
virtual int GetMaxLength(void);
// Specific
void SetSorted(bool b) {Sorted = b;}
protected:
// Members
PSZ* const &Strp; // Pointer to PSZ buffer
bool Sorted; // Values are (semi?) sorted
}; // end of class STRBLK
/***********************************************************************/
/* Class DATBLK: represents a block of time stamp values. */
/***********************************************************************/
class DATBLK : public TYPBLK<int> {
public:
// Constructor
DATBLK(void *mp, int size);
// Implementation
virtual bool SetFormat(PGLOBAL g, PCSZ fmt, int len, int year = 0);
virtual char *GetCharString(char *p, int n);
// Methods
using TYPBLK<int>::SetValue;
virtual void SetValue(PCSZ sp, int n);
protected:
// Members
PVAL Dvalp; // Date value used to convert string
}; // end of class DATBLK
/***********************************************************************/
/* Class PTRBLK: represent a block of char pointers. */
/* Currently this class is used only by the ARRAY class to make and */
/* sort a list of char pointers. */
/***********************************************************************/
class PTRBLK : public STRBLK {
friend class ARRAY;
friend PVBLK AllocValBlock(PGLOBAL, void *, int, int, int, int,
bool, bool, bool);
protected:
// Constructors
PTRBLK(PGLOBAL g, void *mp, int size) : STRBLK(g, mp, size, TYPE_PCHAR) {}
// Implementation
// Methods
using STRBLK::SetValue;
using STRBLK::CompVal;
virtual void SetValue(PCSZ p, int n) {Strp[n] = (char*)p;}
virtual int CompVal(int i1, int i2);
protected:
// Members
}; // end of class PTRBLK
#endif // __VALBLK__H__
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