- Adding the VIR table type implementation files

added:
  storage/connect/tabvir.cpp
  storage/connect/tabvir.h

storage/connect/tabvir.h

+/**************** tdbvir H Declares Source Code File (.H) **************/
+/*  Name: TDBVIR.H  Version 1.1                                        */
+/*                                                                     */
+/*  (C) Copyright to the author Olivier BERTRAND          2006-2014    */
+/*                                                                     */
+/*  This file contains the VIR classes declare code.                   */
+/***********************************************************************/
+typedef class VIRDEF   *PVIRDEF;
+typedef class TDBVIR   *PTDBVIR;
+
+/* --------------------------- VIR classes --------------------------- */
+
+/***********************************************************************/
+/*  VIR: Virtual table used to select constant values.                 */
+/***********************************************************************/
+class DllExport VIRDEF : public TABDEF {  /* Logical table description */
+ public:
+  // Constructor
+	VIRDEF(void) {}
+
+  // Implementation
+  virtual const char *GetType(void) {return "VIRTUAL";}
+
+  // Methods
+  virtual bool DefineAM(PGLOBAL, LPCSTR, int) {Pseudo = 3; return false;}
+  virtual int  Indexable(void) {return 3;}
+  virtual PTDB GetTable(PGLOBAL g, MODE m);
+
+ protected:
+  // Members
+  }; // end of VIRDEF
+
+/***********************************************************************/
+/*  This is the class declaration for the Virtual table.               */
+/***********************************************************************/
+class DllExport TDBVIR : public TDBASE {
+ public:
+  // Constructors
+	TDBVIR(PVIRDEF tdp);
+
+  // Implementation
+  virtual AMT  GetAmType(void) {return TYPE_AM_VIR;}
+
+  // Methods
+  virtual int  GetRecpos(void) {return N;}
+  virtual bool SetRecpos(PGLOBAL g, int recpos)
+               {N = recpos - 2; return false;}
+	virtual int  RowNumber(PGLOBAL g, bool b = false) {return N + 1;}
+          int  TestFilter(PFIL filp, bool nop);
+
+  // Database routines
+	virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
+  virtual int  Cardinality(PGLOBAL g) {return (g) ? Size : 1;}
+  virtual int  GetMaxSize(PGLOBAL g) {return Size;}
+  virtual bool OpenDB(PGLOBAL g);
+  virtual int  ReadDB(PGLOBAL g);
+  virtual int  WriteDB(PGLOBAL g);
+  virtual int  DeleteDB(PGLOBAL g, int irc);
+	virtual void CloseDB(PGLOBAL g) {}
+
+ protected:
+  // Members
+	int     Size;											// Table size
+	int     N;                        // The VIR table current position
+  }; // end of class TDBVIR
+
+/***********************************************************************/
+/*  Class VIRCOL: VIRTUAL access method column descriptor.             */
+/***********************************************************************/
+class VIRCOL : public COLBLK {
+  friend class TDBVIR;
+ public:
+  // Constructors
+  VIRCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PSZ am = "VIRTUAL");
+
+  // Implementation
+  virtual int  GetAmType(void) {return TYPE_AM_VIR;}
+
+  // Methods
+  virtual void ReadColumn(PGLOBAL g);
+
+ protected:
+  // Default constructor not to be used
+  VIRCOL(void) {}
+
+  // No additional members
+  }; // end of class VIRCOL
+
+/***********************************************************************/
+/*  This is the class declaration for the VIR column catalog table.    */
+/***********************************************************************/
+class TDBVICL : public TDBCAT {
+ public:
+  // Constructor
+  TDBVICL(PVIRDEF tdp) : TDBCAT(tdp) {}
+
+  // Methods
+  virtual int  Cardinality(PGLOBAL g) {return 2;} // Avoid DBUG_ASSERT
+
+ protected:
+	// Specific routines
+	virtual PQRYRES GetResult(PGLOBAL g);
+
+  // Members
+  }; // end of class TDBVICL