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mariadb/storage/connect/tabvct.cpp
Olivier Bertrand 213ecbbb4f - In info, the file length sometimes could not be caculated because the 
catalog data path had not been set. This was added into ha_connect::info.
modified:
  storage/connect/ha_connect.cc

- All the functions querying table options could return information from the wrong
  table when several CONNECT tables were used in the same query (for instance joined
  together) This was because they belonged to the catalog class that is shared between
  all tables in the same query. They have been moved from the catalog class to the
  TABDEF/RELDEF class that is attached to each table. This was a major potential bug.
modified:
  storage/connect/catalog.h
  storage/connect/filamvct.cpp
  storage/connect/filamzip.cpp
  storage/connect/mycat.cc
  storage/connect/mycat.h
  storage/connect/reldef.cpp
  storage/connect/reldef.h
  storage/connect/tabdos.cpp
  storage/connect/tabfmt.cpp
  storage/connect/tabmul.cpp
  storage/connect/tabmysql.cpp
  storage/connect/taboccur.cpp
  storage/connect/tabodbc.cpp
  storage/connect/tabpivot.cpp
  storage/connect/tabsys.cpp
  storage/connect/tabtbl.cpp
  storage/connect/tabutil.cpp
  storage/connect/tabvct.cpp
  storage/connect/tabwmi.cpp
  storage/connect/tabxcl.cpp
  storage/connect/tabxml.cpp
  storage/connect/xindex.cpp

- Prepare indexing of MYSQL/ODBC tables (as does FEDERATED) (Not implemented yet)
modified:
  storage/connect/ha_connect.cc
  storage/connect/ha_connect.h
  storage/connect/mycat.cc
  storage/connect/mycat.h

- Typo
modified:
  storage/connect/plgdbutl.cpp
2014-04-14 14:26:48 +02:00

562 lines
20 KiB
C++
Raw Blame History

/************* TabVct C++ Program Source Code File (.CPP) **************/
/* PROGRAM NAME: TABVCT */
/* ------------- */
/* Version 3.8 */
/* */
/* COPYRIGHT: */
/* ---------- */
/* (C) Copyright to the author Olivier BERTRAND 1999-2014 */
/* */
/* WHAT THIS PROGRAM DOES: */
/* ----------------------- */
/* This is the TDBVCT and VCTCOL classes implementation routines. */
/* */
/* WHAT YOU NEED TO COMPILE THIS PROGRAM: */
/* -------------------------------------- */
/* */
/* REQUIRED FILES: */
/* --------------- */
/* TABVCT.C - Source code */
/* PLGDBSEM.H - DB application declaration file */
/* TABDOS.H - TABDOS classes declaration file */
/* GLOBAL.H - Global declaration file */
/* */
/* REQUIRED LIBRARIES: */
/* ------------------- */
/* Large model C library */
/* */
/* REQUIRED PROGRAMS: */
/* ------------------ */
/* IBM, Borland, GNU or Microsoft C++ Compiler and Linker */
/* */
/***********************************************************************/
/***********************************************************************/
/* Include relevant MariaDB header file. */
/***********************************************************************/
#include "my_global.h"
#if defined(WIN32)
#include <io.h>
#include <fcntl.h>
#if defined(__BORLANDC__)
#define __MFC_COMPAT__ // To define min/max as macro
#endif
//#include <windows.h>
#include <sys/stat.h>
#else
#if defined(UNIX)
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#define NO_ERROR 0
#else
#include <io.h>
#endif
#include <fcntl.h>
#endif
/***********************************************************************/
/* Include application header files: */
/* global.h is header containing all global declarations. */
/* plgdbsem.h is header containing the DB application declarations. */
/* tabdos.h is header containing the TABDOS class declarations. */
/***********************************************************************/
#include "global.h"
#include "plgdbsem.h"
#include "reldef.h"
#include "osutil.h"
#include "filamvct.h"
#include "tabdos.h"
#include "tabvct.h"
#include "valblk.h"
#if defined(UNIX)
//add dummy strerror (NGC)
char *strerror(int num);
#endif // UNIX
extern "C" int trace;
/***********************************************************************/
/* Char VCT column blocks are right filled with blanks (blank = true) */
/* Conversion of block values allowed conditionally for insert only. */
/***********************************************************************/
PVBLK AllocValBlock(PGLOBAL, void *, int, int, int, int,
bool check = true, bool blank = true, bool un = false);
/* --------------------------- Class VCTDEF -------------------------- */
/***********************************************************************/
/* DefineAM: define specific AM block values from XDB file. */
/***********************************************************************/
bool VCTDEF::DefineAM(PGLOBAL g, LPCSTR am, int poff)
{
DOSDEF::DefineAM(g, "BIN", poff);
Estimate = GetIntCatInfo("Estimate", 0);
Split = GetIntCatInfo("Split", (Estimate) ? 0 : 1);
Header = GetIntCatInfo("Header", 0);
// CONNECT must have Block/Last info for VEC tables
if (Estimate && !Split && !Header) {
char *fn = GetStringCatInfo(g, "Filename", "?");
// No separate header file fo urbi tables
Header = (*fn == '?') ? 3 : 2;
} // endif Estimate
Recfm = RECFM_VCT;
// For packed files the logical record length is calculated in poff
if (poff != Lrecl) {
Lrecl = poff;
SetIntCatInfo("Lrecl", poff);
} // endif poff
Padded = false;
Blksize = 0;
return false;
} // end of DefineAM
#if 0
/***********************************************************************/
/* Erase: This was made a separate routine because a strange thing */
/* happened when DeleteTablefile was defined for the VCTDEF class: */
/* when called from Catalog, the DOSDEF routine was still called even */
/* for a VCTDEF class. It also minimizes the specific code. */
/***********************************************************************/
bool VCTDEF::Erase(char *filename)
{
bool rc = false;
if (Split) {
char fpat[_MAX_PATH];
int i;
PCOLDEF cdp;
MakeFnPattern(fpat);
for (i = 1, cdp = To_Cols; cdp; i++, cdp = cdp->GetNext()) {
sprintf(filename, fpat, i);
//#if defined(WIN32)
// rc |= !DeleteFile(filename);
//#else // UNIX
rc |= remove(filename);
//#endif // UNIX
} // endfor cdp
} else {
rc = DOSDEF::Erase(filename);
if (Estimate && Header == 2) {
PlugSetPath(filename, Fn, GetPath());
strcat(PlugRemoveType(filename, filename), ".blk");
rc |= remove(filename);
} // endif Header
} // endif Split
return rc; // Return true if error
} // end of Erase
#endif // 0
/***********************************************************************/
/* Prepare the column file name pattern for a split table. */
/* This function returns the number of columns of the table. */
/***********************************************************************/
int VCTDEF::MakeFnPattern(char *fpat)
{
char pat[8];
#if !defined(UNIX)
char drive[_MAX_DRIVE];
#else
char *drive = NULL;
#endif
char direc[_MAX_DIR];
char fname[_MAX_FNAME];
char ftype[_MAX_EXT]; // File extention
int n, m, ncol = 0;
PCOLDEF cdp;
for (cdp = To_Cols; cdp; cdp = cdp->GetNext())
ncol++;
for (n = 1, m = ncol; m /= 10; n++) ;
sprintf(pat, "%%0%dd", n);
_splitpath(Fn, drive, direc, fname, ftype);
strcat(fname, pat);
_makepath(fpat, drive, direc, fname, ftype);
PlugSetPath(fpat, fpat, GetPath());
return ncol;
} // end of MakeFnPattern
/***********************************************************************/
/* GetTable: makes a new Table Description Block. */
/***********************************************************************/
PTDB VCTDEF::GetTable(PGLOBAL g, MODE mode)
{
/*********************************************************************/
/* Allocate a TDB of the proper type. */
/* Column blocks will be allocated only when needed. */
/*********************************************************************/
// Mapping not used for insert (except for true VEC not split tables)
// or when UseTemp is forced
bool map = Mapped && (Estimate || mode != MODE_INSERT) &&
!(PlgGetUser(g)->UseTemp == TMP_FORCE &&
(mode == MODE_UPDATE || mode == MODE_DELETE));
PTXF txfp;
PTDB tdbp;
if (Multiple) {
strcpy(g->Message, MSG(NO_MUL_VCT));
return NULL;
} // endif Multiple
if (Split) {
if (map)
txfp = new(g) VMPFAM(this);
else
txfp = new(g) VECFAM(this);
} else if (Huge)
txfp = new(g) BGVFAM(this);
else if (map)
txfp = new(g) VCMFAM(this);
else
txfp = new(g) VCTFAM(this);
tdbp = new(g) TDBVCT(this, txfp);
/*********************************************************************/
/* For block tables, get eventually saved optimization values. */
/*********************************************************************/
if (mode != MODE_INSERT)
if (tdbp->GetBlockValues(g))
PushWarning(g, (PTDBASE)tdbp);
// return NULL; // causes a crash when deleting index
return tdbp;
} // end of GetTable
/* --------------------------- Class TDBVCT -------------------------- */
/***********************************************************************/
/* Implementation of the TDBVCT class. */
/***********************************************************************/
TDBVCT::TDBVCT(PVCTDEF tdp, PTXF txfp) : TDBFIX(tdp, txfp)
{
To_SetCols = NULL;
} // end of TDBVCT standard constructor
TDBVCT::TDBVCT(PGLOBAL g, PTDBVCT tdbp) : TDBFIX(g, tdbp)
{
To_SetCols = tdbp->To_SetCols;
} // end of TDBVCT copy constructor
// Method
PTDB TDBVCT::CopyOne(PTABS t)
{
PTDB tp;
PVCTCOL cp1, cp2;
PGLOBAL g = t->G; // Is this really useful ???
tp = new(g) TDBVCT(g, this);
for (cp1 = (PVCTCOL)Columns; cp1; cp1 = (PVCTCOL)cp1->Next) {
cp2 = new(g) VCTCOL(cp1, tp); // Make a copy
NewPointer(t, cp1, cp2);
} // endfor cp1
return tp;
} // end of CopyOne
/***********************************************************************/
/* Allocate VCT column description block. */
/***********************************************************************/
PCOL TDBVCT::MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n)
{
return new(g) VCTCOL(g, cdp, this, cprec, n);
} // end of MakeCol
/***********************************************************************/
/* VCT Access Method opening routine. */
/* New method now that this routine is called recursively (last table */
/* first in reverse order): index blocks are immediately linked to */
/* join block of next table if it exists or else are discarted. */
/***********************************************************************/
bool TDBVCT::OpenDB(PGLOBAL g)
{
if (trace)
htrc("VCT OpenDB: tdbp=%p tdb=R%d use=%d key=%p mode=%d\n",
this, Tdb_No, Use, To_Key_Col, Mode);
if (Use == USE_OPEN) {
/*******************************************************************/
/* Table already open, just replace it at its beginning. */
/*******************************************************************/
if (To_Kindex)
// Table is to be accessed through a sorted index table
To_Kindex->Reset();
Txfp->Rewind();
return false;
} // endif Use
/*********************************************************************/
/* Delete all is not handled using file mapping. */
/*********************************************************************/
if (Mode == MODE_DELETE && !Next && Txfp->GetAmType() == TYPE_AM_MAP) {
Txfp = new(g) VCTFAM((PVCTDEF)To_Def);
Txfp->SetTdbp(this);
} // endif Mode
/*********************************************************************/
/* Open according to input/output mode required and */
/* allocate the block buffers for columns used in the query. */
/*********************************************************************/
if (Txfp->OpenTableFile(g))
return true;
// This was not done in previous version
Use = USE_OPEN; // Do it now in case we are recursively called
/*********************************************************************/
/* Reset buffer access according to indexing and to mode. */
/*********************************************************************/
Txfp->ResetBuffer(g);
return false;
} // end of OpenDB
/***********************************************************************/
/* Data Base read routine for VCT access method. */
/* This routine just set the new block index and record position. */
/* For index accessed tables the physical reading is deferred to the */
/* ReadColumn routine so only really used column are physically read. */
/***********************************************************************/
int TDBVCT::ReadDB(PGLOBAL g)
{
if (trace)
htrc("VCT ReadDB: R%d Mode=%d CurBlk=%d CurNum=%d key=%p link=%p Kindex=%p\n",
GetTdb_No(), Mode, Txfp->CurBlk, Txfp->CurNum,
To_Key_Col, To_Link, To_Kindex);
if (To_Kindex) {
/*******************************************************************/
/* Reading is by an index table. */
/*******************************************************************/
int recpos = To_Kindex->Fetch(g);
switch (recpos) {
case -1: // End of file reached
return RC_EF;
case -2: // No match for join
return RC_NF;
case -3: // Same record as last non null one
// num_there++;
return RC_OK;
default:
/***************************************************************/
/* Set the file position according to record to read. */
/***************************************************************/
if (SetRecpos(g, recpos))
return RC_FX;
} // endswitch recpos
} // endif To_Kindex
return ReadBuffer(g);
} // end of ReadDB
/***********************************************************************/
/* Data Base close routine for VEC access method. */
/***********************************************************************/
void TDBVCT::CloseDB(PGLOBAL g)
{
if (To_Kindex) {
To_Kindex->Close();
To_Kindex = NULL;
} // endif
Txfp->CloseTableFile(g);
} // end of CloseDB
// ------------------------ VCTCOL functions ----------------------------
/***********************************************************************/
/* VCTCOL public constructor. */
/***********************************************************************/
VCTCOL::VCTCOL(PGLOBAL g, PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i)
: DOSCOL(g, cdp, tdbp, cprec, i, "VCT")
{
Deplac = cdp->GetPoff();
Clen = cdp->GetClen(); // Length of the field in the file
ColBlk = -1;
ColPos = -1;
Blk = NULL;
Modif = 0;
} // end of VCTCOL constructor
/***********************************************************************/
/* VCTCOL constructor used for copying columns. */
/* tdbp is the pointer to the new table descriptor. */
/***********************************************************************/
VCTCOL::VCTCOL(VCTCOL *col1, PTDB tdbp) : DOSCOL(col1, tdbp)
{
ColBlk = col1->ColBlk;
ColPos = col1->ColPos;
Blk = col1->Blk; // Should be NULL when copying ????
Modif = col1->Modif; // Should be 0 ????
} // end of VCTCOL copy constructor
/***********************************************************************/
/* SetBuffer: allocate and set the buffers needed for write operation.*/
/***********************************************************************/
bool VCTCOL::SetBuffer(PGLOBAL g, PVAL value, bool ok, bool check)
{
// Eventual conversion will be done when setting ValBlk from Value.
Value = value; // Force To_Val == Value
if (DOSCOL::SetBuffer(g, value, ok, check))
return true;
if (To_Tdb->GetMode() != MODE_INSERT) {
// Allocate the block buffer to use for read/writing except when
// updating a mapped VCT table and Ok is true.
PTDBVCT tdbp = (PTDBVCT)To_Tdb;
if (tdbp->Txfp->GetAmType() == TYPE_AM_VMP && ok) {
Blk = AllocValBlock(g, (void*)1, Buf_Type, tdbp->Txfp->Nrec,
Format.Length,
Format.Prec, check);
Status |= BUF_MAPPED; // Will point into mapped file
} else
Blk = AllocValBlock(g, NULL, Buf_Type, tdbp->Txfp->Nrec,
Format.Length,
Format.Prec, check);
} // endif Mode
return false;
} // end of SetBuffer
/***********************************************************************/
/* ReadBlock: Indicate it is Ok to make updates. */
/***********************************************************************/
void VCTCOL::SetOk(void)
{
if (((PTDBVCT)To_Tdb)->Txfp->GetAmType() == TYPE_AM_VMP)
Status |= BUF_MAPPED;
Status |= BUF_EMPTY;
Modif = 0;
} // end of SetOk
/***********************************************************************/
/* ReadBlock: Read column values from current block. */
/***********************************************************************/
void VCTCOL::ReadBlock(PGLOBAL g)
{
PVCTFAM txfp = (PVCTFAM)((PTDBVCT)To_Tdb)->Txfp;
#if defined(_DEBUG)
if (!Blk) {
strcpy(g->Message, MSG(TO_BLK_IS_NULL));
longjmp(g->jumper[g->jump_level], 58);
} // endif
#endif
/*********************************************************************/
/* Read column block according to used access method. */
/*********************************************************************/
if (txfp->ReadBlock(g, this))
longjmp(g->jumper[g->jump_level], 6);
ColBlk = txfp->CurBlk;
ColPos = -1; // Any invalid position
} // end of ReadBlock
/***********************************************************************/
/* WriteBlock: Write back current column values for one block. */
/* Note: the test of Status is meant to prevent physical writing of */
/* the block during the checking loop in mode Update. It is set to */
/* BUF_EMPTY when reopening the table between the two loops. */
/***********************************************************************/
void VCTCOL::WriteBlock(PGLOBAL g)
{
if (Modif && (Status & BUF_EMPTY)) {
PVCTFAM txfp = (PVCTFAM)((PTDBVCT)To_Tdb)->Txfp;
#if defined(_DEBUG)
if (!Blk) {
strcpy(g->Message, MSG(BLK_IS_NULL));
longjmp(g->jumper[g->jump_level], 56);
} // endif
#endif
/*******************************************************************/
/* Write column block according to used access method. */
/*******************************************************************/
if (txfp->WriteBlock(g, this))
longjmp(g->jumper[g->jump_level], 6);
Modif = 0;
} // endif Modif
} // end of WriteBlock
/***********************************************************************/
/* ReadColumn: what this routine does is to check whether a column */
/* block has been read from the file, then to extract from it the */
/* field corresponding to this column and convert it to buffer type. */
/***********************************************************************/
void VCTCOL::ReadColumn(PGLOBAL g)
{
PTXF txfp = ((PTDBVCT)To_Tdb)->Txfp;
#if defined(_DEBUG)
assert (!To_Kcol);
#endif
if (trace > 1)
htrc("VCT ReadColumn: col %s R%d coluse=%.4X status=%.4X buf_type=%d\n",
Name, To_Tdb->GetTdb_No(), ColUse, Status, Buf_Type);
if (ColBlk != txfp->CurBlk)
ReadBlock(g);
else if (ColPos == txfp->CurNum)
return; // Value is already there
//ColBlk = txfp->CurBlk; done in ReadBlock
ColPos = txfp->CurNum;
Value->SetValue_pvblk(Blk, ColPos);
// Set null when applicable
if (Nullable)
Value->SetNull(Value->IsZero());
} // end of ReadColumn
/***********************************************************************/
/* WriteColumn: Modifications are written back into column buffer. */
/* On each change of block the buffer is written back to file and */
/* in mode Insert the buffer is filled with the block to update. */
/***********************************************************************/
void VCTCOL::WriteColumn(PGLOBAL g)
{
PTXF txfp = ((PTDBVCT)To_Tdb)->Txfp;;
if (trace > 1)
htrc("VCT WriteColumn: col %s R%d coluse=%.4X status=%.4X buf_type=%d\n",
Name, To_Tdb->GetTdb_No(), ColUse, Status, Buf_Type);
ColBlk = txfp->CurBlk;
ColPos = txfp->CurNum;
Blk->SetValue(Value, ColPos);
Modif++;
} // end of WriteColumn
/* ------------------------ End of TabVct ---------------------------- */
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