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Diffstat (limited to 'storage/connect/colblk.h')
| -rw-r--r-- | storage/connect/colblk.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/storage/connect/colblk.h b/storage/connect/colblk.h new file mode 100644 index 00000000..e67ba3ba --- /dev/null +++ b/storage/connect/colblk.h @@ -0,0 +1,232 @@ +/*************** Colblk H Declares Source Code File (.H) ***************/ +/* Name: COLBLK.H Version 1.7 */ +/* */ +/* (C) Copyright to the author Olivier BERTRAND 2005-2019 */ +/* */ +/* This file contains the COLBLK and derived classes declares. */ +/***********************************************************************/ +#ifndef __COLBLK__H +#define __COLBLK__H + +/***********************************************************************/ +/* Include required application header files */ +/***********************************************************************/ +#include "xobject.h" +#include "reldef.h" + +/***********************************************************************/ +/* Class COLBLK: Base class for table column descriptors. */ +/***********************************************************************/ +class DllExport COLBLK : public XOBJECT { + friend class TDBPIVOT; + protected: + // Default constructors used by derived classes + COLBLK(PCOLDEF cdp = NULL, PTDB tdbp = NULL, int i = 0); + COLBLK(PCOL colp, PTDB tdbp = NULL); // Used in copy process + COLBLK(int) {} // Used when changing a column class in TDBXML + + public: + // Implementation + virtual int GetType(void) {return TYPE_COLBLK;} + virtual int GetResultType(void) {return Buf_Type;} + virtual int GetScale(void) {return Format.Prec;} + virtual int GetPrecision(void) {return Precision;} + virtual int GetLength(void) {return Long;} + virtual int GetLengthEx(void); + virtual int GetAmType() {return TYPE_AM_ERROR;} + virtual void SetOk(void) {Status |= BUF_EMPTY;} + virtual PTDB GetTo_Tdb(void) {return To_Tdb;} + virtual int GetClustered(void) {return 0;} + virtual int IsClustered(void) {return FALSE;} + virtual bool Stringify(void) {return FALSE;} + virtual PSZ GetJpath(PGLOBAL g, bool proj) {return NULL;} + PCOL GetNext(void) {return Next;} + PSZ GetName(void) {return Name;} + int GetIndex(void) {return Index;} + ushort GetColUse(void) {return ColUse;} + int GetOpt(void) {return Opt;} + ushort GetColUse(ushort u) {return (ColUse & u);} + ushort GetStatus(void) {return Status;} + ushort GetStatus(ushort u) {return (Status & u);} + void SetColUse(ushort u) {ColUse = u;} + void SetStatus(ushort u) {Status = u;} + void AddColUse(ushort u) {ColUse |= u;} + void AddStatus(ushort u) {Status |= u;} + void SetNext(PCOL cp) {Next = cp;} + PXCOL GetKcol(void) {return To_Kcol;} + void SetKcol(PXCOL kcp) {To_Kcol = kcp;} + PCOLDEF GetCdp(void) {return Cdp;} + PSZ GetDomain(void) {return (Cdp) ? Cdp->Decode : NULL;} + PSZ GetDesc(void) {return (Cdp) ? Cdp->Desc : NULL;} + PSZ GetFmt(void) {return (Cdp) ? Cdp->Fmt : NULL;} + bool IsUnsigned(void) {return Unsigned;} + bool IsVirtual(void) {return Cdp->IsVirtual();} + bool IsNullable(void) {return Nullable;} + void SetNullable(bool b) {Nullable = b;} + void SetName(PSZ name_var) { Name= name_var; } + // Methods + virtual void Reset(void); + virtual bool Compare(PXOB xp); + virtual bool SetFormat(PGLOBAL, FORMAT&); + virtual bool IsSpecial(void) {return false;} + virtual bool Eval(PGLOBAL g); + virtual bool SetBuffer(PGLOBAL g, PVAL value, bool ok, bool check); + virtual void SetTo_Val(PVAL) {} + virtual void ReadColumn(PGLOBAL g); + virtual void WriteColumn(PGLOBAL g); + virtual void Printf(PGLOBAL g, FILE *, uint); + virtual void Prints(PGLOBAL g, char *, uint); + virtual bool VarSize(void) {return false;} + bool InitValue(PGLOBAL g); + + protected: + // Members + PCOL Next; // Next column in table + PSZ Name; // Column name + PCOLDEF Cdp; // To column definition block + PTDB To_Tdb; // Points to Table Descriptor Block + PXCOL To_Kcol; // Points to Xindex matching column + bool Nullable; // True if nullable + bool Unsigned; // True if unsigned + int Index; // Column number in table + int Opt; // Cluster/sort information + int Buf_Type; // Data type + int Long; // Internal length in table + int Precision; // Column length (as for ODBC) + int Freq; // Evaluated ceiling of distinct values + FORMAT Format; // Output format + ushort ColUse; // Column usage + ushort Status; // Column read status + }; // end of class COLBLK + +/***********************************************************************/ +/* Class SPCBLK: Base class for special column descriptors. */ +/***********************************************************************/ +class DllExport SPCBLK : public COLBLK { + public: + // Constructor + SPCBLK(PCOLUMN cp); + + // Implementation + virtual int GetAmType(void) = 0; + virtual bool GetRnm(void) {return false;} + + // Methods + virtual bool IsSpecial(void) {return true;} + virtual void ReadColumn(PGLOBAL g) = 0; + virtual void WriteColumn(PGLOBAL g); + + protected: + // Default constructor not to be used + SPCBLK(void) : COLBLK(1) {} + }; // end of class SPCBLK + +/***********************************************************************/ +/* Class RIDBLK: ROWID special column descriptor. */ +/***********************************************************************/ +class DllExport RIDBLK : public SPCBLK { + public: + // Constructor + RIDBLK(PCOLUMN cp, bool rnm); + + // Implementation + virtual int GetAmType(void) {return TYPE_AM_ROWID;} + virtual bool GetRnm(void) {return Rnm;} + + // Methods + virtual void ReadColumn(PGLOBAL g); + + protected: + bool Rnm; // False for RowID, True for RowNum + }; // end of class RIDBLK + +/***********************************************************************/ +/* Class FIDBLK: FILEID special column descriptor. */ +/***********************************************************************/ +class DllExport FIDBLK : public SPCBLK { + public: + // Constructor + FIDBLK(PCOLUMN cp, OPVAL op); + + // Implementation + virtual int GetAmType(void) {return TYPE_AM_FILID;} + + // Methods + virtual void Reset(void) {} // This is a pseudo constant column + virtual void ReadColumn(PGLOBAL g); + + protected: + PCSZ Fn; // The current To_File of the table + OPVAL Op; // The file part operator + }; // end of class FIDBLK + +/***********************************************************************/ +/* Class TIDBLK: TABID special column descriptor. */ +/***********************************************************************/ +class DllExport TIDBLK : public SPCBLK { + public: + // Constructor + TIDBLK(PCOLUMN cp); + + // Implementation + virtual int GetAmType(void) {return TYPE_AM_TABID;} + + // Methods + virtual void Reset(void) {} // This is a pseudo constant column + virtual void ReadColumn(PGLOBAL g); + + protected: + // Default constructor not to be used + TIDBLK(void) = default; + + // Members + PCSZ Tname; // The current table name + }; // end of class TIDBLK + +/***********************************************************************/ +/* Class PRTBLK: PARTID special column descriptor. */ +/***********************************************************************/ +class DllExport PRTBLK : public SPCBLK { + public: + // Constructor + PRTBLK(PCOLUMN cp); + + // Implementation + virtual int GetAmType(void) {return TYPE_AM_PRTID;} + + // Methods + virtual void Reset(void) {} // This is a pseudo constant column + virtual void ReadColumn(PGLOBAL g); + + protected: + // Default constructor not to be used + PRTBLK(void) = default; + + // Members + PCSZ Pname; // The current partition name + }; // end of class PRTBLK + +/***********************************************************************/ +/* Class SIDBLK: SERVID special column descriptor. */ +/***********************************************************************/ +class DllExport SIDBLK : public SPCBLK { + public: + // Constructor + SIDBLK(PCOLUMN cp); + + // Implementation + virtual int GetAmType(void) {return TYPE_AM_SRVID;} + + // Methods + virtual void Reset(void) {} // This is a pseudo constant column + virtual void ReadColumn(PGLOBAL g); + + protected: + // Default constructor not to be used + SIDBLK(void) = default; + + // Members + PCSZ Sname; // The current server name + }; // end of class SIDBLK + +#endif // __COLBLK__H |