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/**************** Value H Declares Source Code File (.H) ***************/
/* Name: VALUE.H Version 2.1 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2001-2014 */
/* */
/* This file contains the VALUE and derived classes declares. */
/***********************************************************************/
#ifndef __VALUE__H__
#define __VALUE__H__
/***********************************************************************/
/* Include required application header files */
/* assert.h is header required when using the assert function. */
/* block.h is header containing Block global declarations. */
/***********************************************************************/
#include "assert.h"
#include "block.h"
/***********************************************************************/
/* Types used in some class definitions. */
/***********************************************************************/
enum CONV {CNV_ANY = 0, /* Convert to any type */
CNV_CHAR = 1, /* Convert to character type */
CNV_NUM = 2}; /* Convert to numeric type */
/***********************************************************************/
/* Types used in some class definitions. */
/***********************************************************************/
class CONSTANT; // For friend setting
typedef struct _datpar *PDTP; // For DTVAL
/***********************************************************************/
/* Utilities used to test types and to allocated values. */
/***********************************************************************/
// Exported functions
DllExport PSZ GetTypeName(int);
DllExport int GetTypeSize(int, int);
#ifdef ODBC_SUPPORT
/* This function is exported for use in EOM table type DLLs */
DllExport int TranslateSQLType(int stp, int prec, int& len, char& v);
#endif
DllExport char *GetFormatType(int);
DllExport int GetFormatType(char);
DllExport bool IsTypeChar(int type);
DllExport bool IsTypeNum(int type);
DllExport int ConvertType(int, int, CONV, bool match = false);
DllExport PVAL AllocateValue(PGLOBAL, void *, short, short = 2);
DllExport PVAL AllocateValue(PGLOBAL, PVAL, int = TYPE_VOID, int = 0);
DllExport PVAL AllocateValue(PGLOBAL, int, int len = 0, int prec = 0,
bool uns = false, PSZ fmt = NULL);
DllExport ulonglong CharToNumber(char *, int, ulonglong, bool,
bool *minus = NULL, bool *rc = NULL);
DllExport BYTE OpBmp(PGLOBAL g, OPVAL opc);
/***********************************************************************/
/* Class VALUE represents a constant or variable of any valid type. */
/***********************************************************************/
class DllExport VALUE : public BLOCK {
friend class CONSTANT; // The only object allowed to use SetConstFormat
public:
// Constructors
// Implementation
virtual bool IsTypeNum(void) = 0;
virtual bool IsZero(void) = 0;
virtual bool IsCi(void) {return false;}
virtual bool IsUnsigned(void) {return Unsigned;}
virtual void Reset(void) = 0;
virtual int GetSize(void) = 0;
virtual int GetValLen(void) = 0;
virtual int GetValPrec(void) = 0;
virtual int GetLength(void) {return 1;}
virtual PSZ GetCharValue(void) {assert(false); return NULL;}
virtual char GetTinyValue(void) {assert(false); return 0;}
virtual uchar GetUTinyValue(void) {assert(false); return 0;}
virtual short GetShortValue(void) {assert(false); return 0;}
virtual ushort GetUShortValue(void) {assert(false); return 0;}
virtual int GetIntValue(void) = 0;
virtual uint GetUIntValue(void) = 0;
virtual longlong GetBigintValue(void) = 0;
virtual ulonglong GetUBigintValue(void) = 0;
virtual double GetFloatValue(void) = 0;
virtual void *GetTo_Val(void) = 0;
virtual void SetPrec(int prec) {Prec = prec;}
bool IsNull(void) {return Null;}
void SetNull(bool b) {Null = b;}
bool GetNullable(void) {return Nullable;}
void SetNullable(bool b) {Nullable = b;}
int GetType(void) {return Type;}
int GetClen(void) {return Clen;}
void SetGlobal(PGLOBAL g) {Global = g;}
// Methods
virtual bool SetValue_pval(PVAL valp, bool chktype = false) = 0;
virtual bool SetValue_char(char *p, int n) = 0;
virtual void SetValue_psz(PSZ s) = 0;
virtual void SetValue_bool(bool b) {assert(FALSE);}
virtual int CompareValue(PVAL vp) = 0;
virtual BYTE TestValue(PVAL vp);
virtual void SetValue(char c) {assert(false);}
virtual void SetValue(uchar c) {assert(false);}
virtual void SetValue(short i) {assert(false);}
virtual void SetValue(ushort i) {assert(false);}
virtual void SetValue(int n) {assert(false);}
virtual void SetValue(uint n) {assert(false);}
virtual void SetValue(longlong n) {assert(false);}
virtual void SetValue(ulonglong n) {assert(false);}
virtual void SetValue(double f) {assert(false);}
virtual void SetValue_pvblk(PVBLK blk, int n) = 0;
virtual void SetBinValue(void *p) = 0;
virtual bool GetBinValue(void *buf, int buflen, bool go) = 0;
virtual char *ShowValue(char *buf, int len = 0) = 0;
virtual char *GetCharString(char *p) = 0;
virtual bool IsEqual(PVAL vp, bool chktype) = 0;
virtual bool Compute(PGLOBAL g, PVAL *vp, int np, OPVAL op);
virtual bool FormatValue(PVAL vp, char *fmt) = 0;
protected:
virtual bool SetConstFormat(PGLOBAL, FORMAT&) = 0;
const char *GetXfmt(void);
// Constructor used by derived classes
VALUE(int type, bool un = false);
// Members
PGLOBAL Global; // To reduce arglist
const char *Fmt;
const char *Xfmt;
bool Nullable; // True if value can be null
bool Null; // True if value is null
bool Unsigned; // True if unsigned
int Type; // The value type
int Clen; // Internal value length
int Prec;
}; // end of class VALUE
/***********************************************************************/
/* Class TYPVAL: represents a typed value. */
/***********************************************************************/
template <class TYPE>
class DllExport TYPVAL : public VALUE {
public:
// Constructor
TYPVAL(TYPE n, int type, int prec = 0, bool un = false);
// Implementation
virtual bool IsTypeNum(void) {return true;}
virtual bool IsZero(void) {return Tval == 0;}
virtual void Reset(void) {Tval = 0;}
virtual int GetValLen(void);
virtual int GetValPrec() {return Prec;}
virtual int GetSize(void) {return sizeof(TYPE);}
//virtual PSZ GetCharValue(void) {return VALUE::GetCharValue();}
virtual char GetTinyValue(void) {return (char)Tval;}
virtual uchar GetUTinyValue(void) {return (uchar)Tval;}
virtual short GetShortValue(void) {return (short)Tval;}
virtual ushort GetUShortValue(void) {return (ushort)Tval;}
virtual int GetIntValue(void) {return (int)Tval;}
virtual uint GetUIntValue(void) {return (uint)Tval;}
virtual longlong GetBigintValue(void) {return (longlong)Tval;}
virtual ulonglong GetUBigintValue(void) {return (ulonglong)Tval;}
virtual double GetFloatValue(void) {return (double)Tval;}
virtual void *GetTo_Val(void) {return &Tval;}
// Methods
virtual bool SetValue_pval(PVAL valp, bool chktype);
virtual bool SetValue_char(char *p, int n);
virtual void SetValue_psz(PSZ s);
virtual void SetValue_bool(bool b) {Tval = (b) ? 1 : 0;}
virtual int CompareValue(PVAL vp);
virtual void SetValue(char c) {Tval = (TYPE)c; Null = false;}
virtual void SetValue(uchar c) {Tval = (TYPE)c; Null = false;}
virtual void SetValue(short i) {Tval = (TYPE)i; Null = false;}
virtual void SetValue(ushort i) {Tval = (TYPE)i; Null = false;}
virtual void SetValue(int n) {Tval = (TYPE)n; Null = false;}
virtual void SetValue(uint n) {Tval = (TYPE)n; Null = false;}
virtual void SetValue(longlong n) {Tval = (TYPE)n; Null = false;}
virtual void SetValue(ulonglong n) {Tval = (TYPE)n; Null = false;}
virtual void SetValue(double f) {Tval = (TYPE)f; Null = false;}
virtual void SetValue_pvblk(PVBLK blk, int n);
virtual void SetBinValue(void *p);
virtual bool GetBinValue(void *buf, int buflen, bool go);
virtual char *ShowValue(char *buf, int);
virtual char *GetCharString(char *p);
virtual bool IsEqual(PVAL vp, bool chktype);
virtual bool Compute(PGLOBAL g, PVAL *vp, int np, OPVAL op);
virtual bool SetConstFormat(PGLOBAL, FORMAT&);
virtual bool FormatValue(PVAL vp, char *fmt);
virtual void Print(PGLOBAL g, FILE *, uint);
virtual void Print(PGLOBAL g, char *, uint);
protected:
static TYPE MinMaxVal(bool b);
TYPE SafeAdd(TYPE n1, TYPE n2);
TYPE SafeMult(TYPE n1, TYPE n2);
bool Compall(PGLOBAL g, PVAL *vp, int np, OPVAL op);
// Default constructor not to be used
TYPVAL(void) : VALUE(TYPE_ERROR) {}
// Specialized functions
static ulonglong MaxVal(void);
TYPE GetTypedValue(PVAL vp);
TYPE GetTypedValue(PVBLK blk, int n);
// TYPE GetTypedValue(PSZ s);
// Members
TYPE Tval;
}; // end of class TYPVAL
/***********************************************************************/
/* Specific STRING class. */
/***********************************************************************/
template <>
class DllExport TYPVAL<PSZ>: public VALUE {
public:
// Constructors
TYPVAL(PSZ s);
TYPVAL(PGLOBAL g, PSZ s, int n, int c);
// Implementation
virtual bool IsTypeNum(void) {return false;}
virtual bool IsZero(void) {return *Strp == 0;}
virtual void Reset(void) {*Strp = 0;}
virtual int GetValLen(void) {return Len;};
virtual int GetValPrec() {return (Ci) ? 1 : 0;}
virtual int GetSize(void) {return (Strp) ? strlen(Strp) : 0;}
virtual PSZ GetCharValue(void) {return Strp;}
virtual char GetTinyValue(void);
virtual uchar GetUTinyValue(void);
virtual short GetShortValue(void);
virtual ushort GetUShortValue(void);
virtual int GetIntValue(void);
virtual uint GetUIntValue(void);
virtual longlong GetBigintValue(void);
virtual ulonglong GetUBigintValue(void);
virtual double GetFloatValue(void) {return atof(Strp);}
virtual void *GetTo_Val(void) {return Strp;}
virtual void SetPrec(int prec) {Ci = prec != 0;}
// Methods
virtual bool SetValue_pval(PVAL valp, bool chktype);
virtual bool SetValue_char(char *p, int n);
virtual void SetValue_psz(PSZ s);
virtual void SetValue_pvblk(PVBLK blk, int n);
virtual void SetValue(char c);
virtual void SetValue(uchar c);
virtual void SetValue(short i);
virtual void SetValue(ushort i);
virtual void SetValue(int n);
virtual void SetValue(uint n);
virtual void SetValue(longlong n);
virtual void SetValue(ulonglong n);
virtual void SetValue(double f);
virtual void SetBinValue(void *p);
virtual int CompareValue(PVAL vp);
virtual bool GetBinValue(void *buf, int buflen, bool go);
virtual char *ShowValue(char *buf, int);
virtual char *GetCharString(char *p);
virtual bool IsEqual(PVAL vp, bool chktype);
virtual bool Compute(PGLOBAL g, PVAL *vp, int np, OPVAL op);
virtual bool FormatValue(PVAL vp, char *fmt);
virtual bool SetConstFormat(PGLOBAL, FORMAT&);
protected:
// Members
PSZ Strp;
bool Ci; // true if case insensitive
int Len;
}; // end of class TYPVAL<PSZ>
/***********************************************************************/
/* Specific DECIMAL class. */
/***********************************************************************/
class DllExport DECVAL: public TYPVAL<PSZ> {
public:
// Constructors
DECVAL(PSZ s);
DECVAL(PGLOBAL g, PSZ s, int n, int prec, bool uns);
// Implementation
virtual bool IsTypeNum(void) {return true;}
virtual bool IsZero(void);
virtual void Reset(void);
virtual int GetValPrec() {return Prec;}
// Methods
virtual bool GetBinValue(void *buf, int buflen, bool go);
virtual char *ShowValue(char *buf, int);
virtual bool IsEqual(PVAL vp, bool chktype);
virtual int CompareValue(PVAL vp);
protected:
// Members
}; // end of class DECVAL
/***********************************************************************/
/* Specific BINARY class. */
/***********************************************************************/
class DllExport BINVAL: public VALUE {
public:
// Constructors
//BINVAL(void *p);
BINVAL(PGLOBAL g, void *p, int cl, int n);
// Implementation
virtual bool IsTypeNum(void) {return false;}
virtual bool IsZero(void);
virtual void Reset(void);
virtual int GetValLen(void) {return Clen;};
virtual int GetValPrec() {return 0;}
virtual int GetSize(void) {return Len;}
virtual PSZ GetCharValue(void) {return (PSZ)Binp;}
virtual char GetTinyValue(void);
virtual uchar GetUTinyValue(void);
virtual short GetShortValue(void);
virtual ushort GetUShortValue(void);
virtual int GetIntValue(void);
virtual uint GetUIntValue(void);
virtual longlong GetBigintValue(void);
virtual ulonglong GetUBigintValue(void);
virtual double GetFloatValue(void);
virtual void *GetTo_Val(void) {return Binp;}
// Methods
virtual bool SetValue_pval(PVAL valp, bool chktype);
virtual bool SetValue_char(char *p, int n);
virtual void SetValue_psz(PSZ s);
virtual void SetValue_pvblk(PVBLK blk, int n);
virtual void SetValue(char c);
virtual void SetValue(uchar c);
virtual void SetValue(short i);
virtual void SetValue(ushort i);
virtual void SetValue(int n);
virtual void SetValue(uint n);
virtual void SetValue(longlong n);
virtual void SetValue(ulonglong n);
virtual void SetValue(double f);
virtual void SetBinValue(void *p);
virtual bool GetBinValue(void *buf, int buflen, bool go);
virtual int CompareValue(PVAL vp) {assert(false); return 0;}
virtual char *ShowValue(char *buf, int);
virtual char *GetCharString(char *p);
virtual bool IsEqual(PVAL vp, bool chktype);
virtual bool FormatValue(PVAL vp, char *fmt);
virtual bool SetConstFormat(PGLOBAL, FORMAT&);
protected:
// Members
void *Binp;
char *Chrp;
int Len;
}; // end of class BINVAL
/***********************************************************************/
/* Class DTVAL: represents a time stamp value. */
/***********************************************************************/
class DllExport DTVAL : public TYPVAL<int> {
public:
// Constructors
DTVAL(PGLOBAL g, int n, int p, PSZ fmt);
DTVAL(PGLOBAL g, PSZ s, int n);
DTVAL(PGLOBAL g, short i);
DTVAL(PGLOBAL g, int n);
DTVAL(PGLOBAL g, longlong n);
DTVAL(PGLOBAL g, double f);
// Implementation
virtual bool IsZero(void) {return Null;}
virtual bool SetValue_pval(PVAL valp, bool chktype);
virtual bool SetValue_char(char *p, int n);
virtual void SetValue_psz(PSZ s);
virtual void SetValue_pvblk(PVBLK blk, int n);
virtual char *GetCharString(char *p);
virtual char *ShowValue(char *buf, int);
virtual bool FormatValue(PVAL vp, char *fmt);
bool SetFormat(PGLOBAL g, PSZ fmt, int len, int year = 0);
bool SetFormat(PGLOBAL g, PVAL valp);
bool IsFormatted(void) {return Pdtp != NULL;}
bool MakeTime(struct tm *ptm);
static void SetTimeShift(void);
static int GetShift(void) {return Shift;}
// Methods
bool MakeDate(PGLOBAL g, int *val, int nval);
struct tm *GetGmTime(struct tm *);
protected:
// Default constructor not to be used
DTVAL(void) : TYPVAL<int>() {}
// Members
static int Shift; // Time zone shift in seconds
PDTP Pdtp; // To the DATPAR structure
char *Sdate; // Utility char buffer
int DefYear; // Used by ExtractDate
int Len; // Used by CHAR scalar function
}; // end of class DTVAL
#endif // __VALUE__H__
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