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/**************** Value H Declares Source Code File (.H) ***************/
/* Name: VALUE.H Version 1.8 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2001-2013 */
/* */
/* 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"
#if defined(WIN32)
#define strtoll _strtoi64
#define atoll(S) strtoll(S, NULL, 10)
#endif // WIN32
/***********************************************************************/
/* 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. */
/***********************************************************************/
int GetPLGType(int);
PVAL AllocateValue(PGLOBAL, void *, short);
// 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);
#endif
DllExport char *GetFormatType(int);
DllExport int GetFormatType(char);
DllExport int GetDBType(int);
DllExport bool IsTypeChar(int type);
DllExport bool IsTypeNum(int type);
DllExport int ConvertType(int, int, CONV, bool match = false);
DllExport PVAL AllocateValue(PGLOBAL, PVAL, int = TYPE_VOID);
DllExport PVAL AllocateValue(PGLOBAL, int, int len = 0, int prec = 2,
PSZ dom = NULL, PCATLG cat = NULL);
/***********************************************************************/
/* 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 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 short GetShortValue(void) {assert(false); return 0;}
virtual int GetIntValue(void) = 0;
virtual longlong GetBigintValue(void) = 0;
virtual double GetFloatValue(void) = 0;
virtual void *GetTo_Val(void) = 0;
bool IsNull(void) {return Null;}
void SetNull(bool b) {Null = b;}
void SetNullable(bool b) {Nullable = b;}
int GetType(void) {return Type;}
int GetClen(void) {return Clen;}
void SetPrec(int prec) {Prec = prec;}
void SetGlobal(PGLOBAL g) {Global = g;}
// Methods
virtual bool SetValue_pval(PVAL valp, bool chktype = false) = 0;
virtual void SetValue_char(char *p, int n) = 0;
virtual void SetValue_psz(PSZ s) = 0;
virtual void SetValue(short i) {assert(false);}
virtual void SetValue(int n) {assert(false);}
virtual void SetValue(longlong 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 char *GetShortString(char *p, int n) {return "#####";}
virtual char *GetIntString(char *p, int n) = 0;
virtual char *GetBigintString(char *p, int n) = 0;
virtual char *GetFloatString(char *p, int n, int prec) = 0;
virtual bool IsEqual(PVAL vp, bool chktype) = 0;
virtual bool FormatValue(PVAL vp, char *fmt) = 0;
protected:
virtual bool SetConstFormat(PGLOBAL, FORMAT&) = 0;
const char *GetFmt(void);
const char *GetXfmt(void);
// Constructor used by derived classes
VALUE(int type);
// 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 Ci; // true if case insensitive
int Type; // The value type
int Clen; // Internal value length
int Len;
int Prec;
}; // end of class VALUE
/***********************************************************************/
/* Class TYPVAL: represents a typed value. */
/***********************************************************************/
template <class TYPE>
class DllExport TYPVAL : public VALUE {
public:
// Constructors
TYPVAL(TYPE n, int type);
TYPVAL(TYPE n, int prec, int type);
TYPVAL(PGLOBAL g, PSZ s, int n, int c, int type);
// 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 0;}
virtual int GetSize(void) {return sizeof(TYPE);}
virtual PSZ GetCharValue(void) {return VALUE::GetCharValue();}
virtual short GetShortValue(void) {return (short)Tval;}
virtual int GetIntValue(void) {return (int)Tval;}
virtual longlong GetBigintValue(void) {return (longlong)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 void SetValue_char(char *p, int n);
virtual void SetValue_psz(PSZ s);
virtual void SetValue(short i);
virtual void SetValue(int n);
virtual void SetValue(longlong n);
virtual void SetValue(double f);
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 char *GetShortString(char *p, int n);
virtual char *GetIntString(char *p, int n);
virtual char *GetBigintString(char *p, int n);
virtual char *GetFloatString(char *p, int n, int prec = -1);
virtual bool IsEqual(PVAL vp, bool chktype);
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:
// Default constructor not to be used
TYPVAL(void) : VALUE(TYPE_ERROR) {}
// Specialized functions
template <class TYPE>
TYPE GetTypedValue(PVAL vp, TYPE t) {return vp->GetIntValue();}
PSZ GetTypedValue(PVAL vp, PSZ t)
{char buf[32]; return strncpy(Tval, vp->GetCharString(buf), Len);}
short GetTypedValue(PVAL vp, short t) {return vp->GetShortValue();}
longlong GetTypedValue(PVAL vp, longlong t) {return vp->GetBigintValue();}
double GetTypedValue(PVAL vp, double t) {return vp->GetFloatValue();}
template <class TYPE>
TYPE GetTypedValue(PVBLK blk, int n, TYPE t)
{return blk->GetIntValue(n);}
PSZ GetTypedValue(PVBLK blk, int n, PSZ t)
{return strncpy(Tval, blk->GetCharValue(n), Len);}
short GetTypedValue(PVBLK blk, int n, short t)
{return blk->GetShortValue(n);}
longlong GetTypedValue(PVBLK blk, int n, longlong t)
{return blk->GetBigintValue(n);}
double GetTypedValue(PVBLK blk, int n, double t)
{return blk->GetFloatValue(n);}
template <class TYPE>
TYPE GetTypedValue(PSZ s, TYPE n) {return atol(s);}
PSZ GetTypedValue(PSZ s, PSZ n) {return strncpy(Tval, s, Len);}
short GetTypedValue(PSZ s, short n) {return atoi(s);}
longlong GetTypedValue(PSZ s, longlong n) {return atoll(s);}
double GetTypedValue(PSZ s, double n) {return atof(s);}
// Members
TYPE Tval;
}; // end of class TYPVAL
/***********************************************************************/
/* Specific STRING functions. */
/***********************************************************************/
bool TYPVAL<PSZ>::IsTypeNum(void) {return false;}
bool TYPVAL<PSZ>::IsZero(void) {return *Tval == 0;}
void TYPVAL<PSZ>::Reset(void) {*Tval = 0;}
int TYPVAL<PSZ>::GetValPrec() {return (Ci) ? 1 : 0;}
int TYPVAL<PSZ>::GetSize(void) {return (Tval) ? strlen(Tval) : 0;}
PSZ TYPVAL<PSZ>::GetCharValue(void) {return Tval;}
short TYPVAL<PSZ>::GetShortValue(void) {return (short)atoi(Tval);}
int TYPVAL<PSZ>::GetIntValue(void) {return atol(Tval);}
longlong TYPVAL<PSZ>::GetBigintValue(void) {return atoll(Tval);}
double TYPVAL<PSZ>::GetFloatValue(void) {return atof(Tval);}
void *TYPVAL<PSZ>::GetTo_Val(void) {return Tval;}
/***********************************************************************/
/* 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 SetValue_pval(PVAL valp, bool chktype);
virtual void 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 GetTmMember(OPVAL op, int& mval);
bool DateDiff(DTVAL *dtp, OPVAL op, int& tdif);
bool MakeTime(struct tm *ptm);
static void SetTimeShift(void);
static int GetShift(void) {return Shift;}
// Methods
bool MakeDate(PGLOBAL g, int *val, int nval);
bool WeekNum(PGLOBAL g, int& nval);
struct tm *GetGmTime(void);
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
}; // end of class DTVAL
#endif // __VALUE__H__
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