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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
commit3f619478f796eddbba6e39502fe941b285dd97b1 (patch)
treee2c7b5777f728320e5b5542b6213fd3591ba51e2 /storage/connect/tabpivot.h
parentInitial commit. (diff)
downloadmariadb-3f619478f796eddbba6e39502fe941b285dd97b1.tar.xz
mariadb-3f619478f796eddbba6e39502fe941b285dd97b1.zip
Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+/************** TabPivot H Declares Source Code File (.H) **************/
+/* Name: TABPIVOT.H Version 1.5 */
+/* */
+/* (C) Copyright to the author Olivier BERTRAND 2005-2013 */
+/* */
+/* This file contains the PIVOT classes declares. */
+/***********************************************************************/
+typedef class PIVOTDEF *PPIVOTDEF;
+typedef class TDBPIVOT *PTDBPIVOT;
+typedef class FNCCOL *PFNCCOL;
+typedef class SRCCOL *PSRCCOL;
+
+/***********************************************************************/
+/* This class is used to generate PIVOT table column definitions. */
+/***********************************************************************/
+class PIVAID : public CSORT {
+ friend class FNCCOL;
+ friend class SRCCOL;
+ public:
+ // Constructor
+ PIVAID(const char *tab, const char *src, const char *picol,
+ const char *fncol, const char *skcol, const char *host,
+ const char *db, const char *user, const char *pwd, int port);
+
+ // Methods
+ PQRYRES MakePivotColumns(PGLOBAL g);
+ bool SkipColumn(PCOLRES crp, char *skc);
+
+ // The sorting function
+ virtual int Qcompare(int *, int *);
+
+ protected:
+ // Members
+ MYSQLC Myc; // MySQL connection class
+ PCSZ Host; // Host machine to use
+ PCSZ User; // User logon info
+ PCSZ Pwd; // Password logon info
+ PCSZ Database; // Database to be used by server
+ PQRYRES Qryp; // Points to Query result block
+ PCSZ Tabname; // Name of source table
+ PCSZ Tabsrc; // SQL of source table
+ PCSZ Picol; // Pivot column name
+ PCSZ Fncol; // Function column name
+ PCSZ Skcol; // Skipped columns
+ PVBLK Rblkp; // The value block of the pivot column
+ int Port; // MySQL port number
+ }; // end of class PIVAID
+
+/* -------------------------- PIVOT classes -------------------------- */
+
+/***********************************************************************/
+/* PIVOT: table that provides a view of a source table where the */
+/* pivot column is expended in as many columns as there are distinct */
+/* values in it and containing the function value matching other cols.*/
+/***********************************************************************/
+
+/***********************************************************************/
+/* PIVOT table. */
+/***********************************************************************/
+class PIVOTDEF : public PRXDEF { /* Logical table description */
+ friend class TDBPIVOT;
+ public:
+ // Constructor
+ PIVOTDEF(void);
+
+ // Implementation
+ virtual const char *GetType(void) {return "PIVOT";}
+
+ // Methods
+ virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff);
+ virtual PTDB GetTable(PGLOBAL g, MODE m);
+
+ protected:
+ // Members
+ char *Host; /* Host machine to use */
+ char *User; /* User logon info */
+ char *Pwd; /* Password logon info */
+ char *DB; /* Database to be used by server */
+ char *Tabname; /* Name of source table */
+ char *Tabsrc; /* The source table SQL description */
+ char *Picol; /* The pivot column */
+ char *Fncol; /* The function column */
+ char *Function; /* The function applying to group by */
+ bool GBdone; /* True if tabname as group by format */
+ bool Accept; /* TRUE if no match is accepted */
+ int Port; /* MySQL port number */
+ }; // end of PIVOTDEF
+
+/***********************************************************************/
+/* This is the class declaration for the PIVOT table. */
+/***********************************************************************/
+class TDBPIVOT : public TDBPRX {
+ friend class FNCCOL;
+ public:
+ // Constructor
+ TDBPIVOT(PPIVOTDEF tdp);
+
+ // Implementation
+ virtual AMT GetAmType(void) {return TYPE_AM_PIVOT;}
+
+ // Methods
+ virtual int GetRecpos(void) {return N;}
+ virtual void ResetDB(void) {N = 0;}
+ virtual int RowNumber(PGLOBAL g, bool b = FALSE);
+
+ // Database routines
+ virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
+ virtual int Cardinality(PGLOBAL g) {return (g) ? 10 : 0;}
+ virtual int GetMaxSize(PGLOBAL g);
+ 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:
+ // Internal routines
+ bool FindDefaultColumns(PGLOBAL g);
+ bool GetSourceTable(PGLOBAL g);
+ bool MakePivotColumns(PGLOBAL g);
+ bool MakeViewColumns(PGLOBAL g);
+
+ // Members
+ char *Host; // Host machine to use
+ char *User; // User logon info
+ char *Pwd; // Password logon info
+ char *Database; // Database to be used by server
+ char *Tabname; // Name of source table
+ char *Tabsrc; // SQL of source table
+ char *Picol; // Pivot column name
+ char *Fncol; // Function column name
+ char *Function; // The function applying to group by
+ PCOL Fcolp; // To the function column in source
+ PCOL Xcolp; // To the pivot column in source
+ PCOL Dcolp; // To the dump column
+ bool GBdone; // True when subtable is "Group by"
+ bool Accept; // TRUE if no match is accepted
+ int Mult; // Multiplication factor
+ int Ncol; // The number of generated columns
+ int N; // The current table index
+ int M; // The occurrence rank
+ int Port; // MySQL port number
+ BYTE FileStatus; // 0: First 1: Rows 2: End-of-File
+ BYTE RowFlag; // 0: Ok, 1: Same, 2: Skip
+ }; // end of class TDBPIVOT
+
+/***********************************************************************/
+/* Class FNCCOL: for the multiple generated column. */
+/***********************************************************************/
+class FNCCOL : public COLBLK {
+ friend class TDBPIVOT;
+ public:
+ // Constructor
+ FNCCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i);
+
+ // Implementation
+ virtual int GetAmType(void) {return TYPE_AM_FNC;}
+
+ // Methods
+ virtual void Reset(void) {}
+ bool InitColumn(PGLOBAL g);
+ bool CompareColumn(void);
+
+ protected:
+ // Member
+ PVAL Hval; // The value containing the header
+ PCOL Xcolp;
+ }; // end of class FNCCOL
+
+/***********************************************************************/
+/* Class SRCCOL: for other source columns. */
+/***********************************************************************/
+class SRCCOL : public PRXCOL {
+ friend class TDBPIVOT;
+ public:
+ // Constructors
+ SRCCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int n);
+
+ // Implementation
+ virtual int GetAmType(void) {return TYPE_AM_SRC;}
+
+ // Methods
+ using PRXCOL::Init;
+ virtual void Reset(void) {}
+ void SetColumn(void);
+ virtual bool Init(PGLOBAL g, PTDB tp);
+ bool CompareLast(void);
+
+ protected:
+ // Default constructor not to be used
+ SRCCOL(void) = default;
+
+ // Members
+ }; // end of class SRCCOL
+
+PQRYRES PivotColumns(PGLOBAL g, const char *tab, const char *src,
+ const char *picol, const char *fncol,
+ const char *skcol, const char *host,
+ const char *db, const char *user,
+ const char *pwd, int port);