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104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
// TABXCL.H Olivier Bertrand 2013
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// Defines the XCOL tables
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#include "tabutil.h"
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typedef class XCLDEF *PXCLDEF;
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typedef class TDBXCL *PTDBXCL;
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typedef class XCLCOL *PXCLCOL;
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/* -------------------------- XCOL classes --------------------------- */
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/***********************************************************************/
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/* XCOL: table having one column containing several values comma */
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/* (or any other character) separated. When creating the table, the */
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/* name of the X column is given by the NAME option. */
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/* This sample has a limitation: */
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/* - The X column has the same length than in the physical file. */
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/* This tables produces as many rows for a physical row than the */
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/* number of items in the X column (eventually 0). */
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/***********************************************************************/
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/***********************************************************************/
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/* XCL table. */
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/***********************************************************************/
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class XCLDEF : public PRXDEF { /* Logical table description */
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friend class TDBXCL;
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public:
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// Constructor
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XCLDEF(void);
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// Implementation
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virtual const char *GetType(void) {return "XCL";}
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// Methods
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virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff);
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virtual PTDB GetTable(PGLOBAL g, MODE mode);
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protected:
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// Members
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char *Xcol; /* The column containing separated fields */
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char Sep; /* The field separator, defaults to comma */
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int Mult; /* Multiplication factor */
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}; // end of XCLDEF
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/***********************************************************************/
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/* This is the class declaration for the XCOL table. */
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/***********************************************************************/
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class TDBXCL : public TDBPRX {
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friend class XCLDEF;
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friend class PRXCOL;
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friend class XCLCOL;
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public:
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// Constructor
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TDBXCL(PXCLDEF tdp);
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// Implementation
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virtual AMT GetAmType(void) {return TYPE_AM_XCOL;}
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// Methods
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virtual void ResetDB(void) {N = 0; Tdbp->ResetDB();}
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virtual int RowNumber(PGLOBAL g, bool b = FALSE);
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// Database routines
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virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
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virtual int GetMaxSize(PGLOBAL g);
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virtual bool OpenDB(PGLOBAL g);
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virtual int ReadDB(PGLOBAL g);
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protected:
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// Members
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char *Xcolumn; // Multiple column name
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PXCLCOL Xcolp; // To the XCVCOL column
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int Mult; // Multiplication factor
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int N; // The current table index
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int M; // The occurrence rank
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BYTE RowFlag; // 0: Ok, 1: Same, 2: Skip
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bool New; // TRUE for new line
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char Sep; // The Xcol separator
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}; // end of class TDBXCL
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/***********************************************************************/
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/* Class XCLCOL: for the multiple CSV column. */
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/***********************************************************************/
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class XCLCOL : public PRXCOL {
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friend class TDBXCL;
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public:
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// Constructors
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XCLCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i);
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// Methods
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using PRXCOL::Init;
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virtual void Reset(void) {} // Evaluated only by TDBXCL
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virtual void ReadColumn(PGLOBAL g);
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virtual bool Init(PGLOBAL g, PTDB tp = NULL);
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protected:
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// Default constructor not to be used
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XCLCOL(void) = default;
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// Members
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char *Cbuf; // The column buffer
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char *Cp; // Pointer to current position
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char Sep; // The separator
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}; // end of class XCLCOL
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