diff options
Diffstat (limited to 'storage/connect/table.cpp')
| -rw-r--r-- | storage/connect/table.cpp | 854 |
1 files changed, 427 insertions, 427 deletions
diff --git a/storage/connect/table.cpp b/storage/connect/table.cpp index db603513458..77c2fd4df3b 100644 --- a/storage/connect/table.cpp +++ b/storage/connect/table.cpp @@ -1,427 +1,427 @@ -/************** Table C++ Functions Source Code File (.CPP) ************/
-/* Name: TABLE.CPP Version 2.5 */
-/* */
-/* (C) Copyright to the author Olivier BERTRAND 1999-2012 */
-/* */
-/* This file contains the TBX, TDB and OPJOIN classes functions. */
-/***********************************************************************/
-
-/***********************************************************************/
-/* Include relevant MariaDB header file. */
-/***********************************************************************/
-#include "my_global.h"
-
-/***********************************************************************/
-/* Include required application header files */
-/* global.h is header containing all global Plug declarations. */
-/* plgdbsem.h is header containing the DB applic. declarations. */
-/* xobject.h is header containing XOBJECT derived classes declares. */
-/***********************************************************************/
-#include "global.h"
-#include "plgdbsem.h"
-#include "xtable.h"
-#include "tabcol.h"
-#include "filamtxt.h"
-#include "tabdos.h"
-//#include "catalog.h"
-#include "reldef.h"
-
-int TDB::Tnum = 0;
-
-extern "C" int trace; // The general trace value
-
-/***********************************************************************/
-/* Utility routines. */
-/***********************************************************************/
-void NewPointer(PTABS, void *, void *);
-void AddPointer(PTABS, void *);
-
-/* ---------------------------- class TBX ---------------------------- */
-
-/***********************************************************************/
-/* TBX public constructors. */
-/***********************************************************************/
-TBX::TBX(void)
- {
- Use = USE_NO;
- To_Orig = NULL;
- To_Filter = NULL;
- } // end of TBX constructor
-
-TBX::TBX(PTBX txp)
- {
- Use = txp->Use;
- To_Orig = txp;
- To_Filter = NULL;
- } // end of TBX copy constructor
-
-// Methods
-
-/* ---------------------------- class TDB ---------------------------- */
-
-/***********************************************************************/
-/* TDB public constructors. */
-/***********************************************************************/
-TDB::TDB(PTABDEF tdp) : Tdb_No(++Tnum)
- {
- Next = NULL;
- Name = (tdp) ? tdp->GetName() : NULL;
- To_Table = NULL;
- Columns = NULL;
- Degree = (tdp) ? tdp->GetDegree() : 0;
- Mode = MODE_READ;
- } // end of TDB standard constructor
-
-TDB::TDB(PTDB tdbp) : TBX(tdbp), Tdb_No(++Tnum)
- {
- Next = NULL;
- Name = tdbp->Name;
- To_Table = tdbp->To_Table;
- Columns = NULL;
- Degree = tdbp->Degree;
- Mode = tdbp->Mode;
- } // end of TDB copy constructor
-
-/***********************************************************************/
-/* OpenTable: Call AM open routine. */
-/***********************************************************************/
-bool TDB::OpenTable(PGLOBAL g, PSQL sqlp, MODE mode)
- {
- if (trace)
- htrc("Open Tdb_No=%d use=%d type=%d tdb.Mode=%d mode=%d\n",
- Tdb_No, Use, GetAmType(), Mode, mode);
-
- switch (Use) {
- case USE_LIN:
- /*****************************************************************/
- /* If table is read/only, only MODE_READ is allowed. */
- /*****************************************************************/
- if (IsReadOnly() && mode != MODE_READ) {
- strcpy(g->Message, MSG(READ_ONLY));
- return true;
- } // endif ReadOnly
-
- /*****************************************************************/
- /* This could be done in any order. */
- /* Note: for not Read only first table in open in that mode. */
- /*****************************************************************/
- if (Next)
- Next->OpenTable(g, sqlp, MODE_READ);
-
- Mode = mode;
-
- /*****************************************************************/
- /* Pre-opening is done, allocate select buffers now. */
- /*****************************************************************/
- Use = USE_READY;
- break;
-
- case USE_READY:
- /*****************************************************************/
- /* This is to open files in reverse order. */
- /*****************************************************************/
- if (Next)
- if (Next->OpenTable(g, sqlp, mode))
- return true;
-
- /*****************************************************************/
- /* This was moved after filter conversion so filtering can be */
- /* done when making index tables for DOS files. */
- /* Also it was moved after allocating select buffers so some */
- /* data can be pre-read during open to allow storage sorting. */
- /*****************************************************************/
- if (OpenDB(g)) // Do open the table file
- return true;
-
- Use = USE_OPEN;
- break;
-
- case USE_OPEN:
- /*****************************************************************/
- /* Table is already open. */
- /* Call open routine that will just "rewind" the files. */
- /*****************************************************************/
- if (OpenDB(g)) // Rewind the table file
- return true;
-
- break;
-
- default:
- sprintf(g->Message, MSG(TDB_USE_ERROR), Use);
- return true;
- } // endswitch Use
-
- return false;
- } // end of OpenTable
-
-/***********************************************************************/
-/* CloseTable: Close a table of any AM type. */
-/***********************************************************************/
-void TDB::CloseTable(PGLOBAL g)
- {
- if (trace)
- htrc("CloseTable: tdb_no %d use=%d amtype=%d am.Mode=%d\n",
- Tdb_No, Use, GetAmType(), Mode);
-
- CloseDB(g);
- Use = USE_READY; // x'7FFD'
- Mode = MODE_ANY;
- } // end of CloseTable
-
-// Methods
-
-/***********************************************************************/
-/* RowNumber: returns the current row ordinal number. */
-/***********************************************************************/
-int TDB::RowNumber(PGLOBAL g, bool b)
- {
- sprintf(g->Message, MSG(ROWID_NOT_IMPL), GetAmName(g, GetAmType()));
- return 0;
- } // end of RowNumber
-
-PTBX TDB::Copy(PTABS t)
- {
- PTDB tp, tdb1, tdb2 = NULL, outp = NULL;
-//PGLOBAL g = t->G; // Is this really useful ???
-
- for (tdb1 = this; tdb1; tdb1 = tdb1->Next) {
- tp = tdb1->CopyOne(t);
-
- if (!outp)
- outp = tp;
- else
- tdb2->Next = tp;
-
- tdb2 = tp;
- NewPointer(t, tdb1, tdb2);
- } // endfor tdb1
-
- return outp;
- } // end of Copy
-
-void TDB::Print(PGLOBAL g, FILE *f, uint n)
- {
- PCOL cp;
- char m[64];
-
- memset(m, ' ', n); // Make margin string
- m[n] = '\0';
-
- for (PTDB tp = this; tp; tp = tp->Next) {
- fprintf(f, "%sTDB (%p) %s no=%d use=%d type=%d\n", m,
- tp, tp->Name, tp->Tdb_No, tp->Use, tp->GetAmType());
-
- tp->PrintAM(f, m);
- fprintf(f, "%s Columns (deg=%d):\n", m, tp->Degree);
-
- for (cp = tp->Columns; cp; cp = cp->GetNext())
- cp->Print(g, f, n);
-
- } /* endfor tp */
-
- } // end of Print
-
-void TDB::Print(PGLOBAL g, char *ps, uint z)
- {
- sprintf(ps, "R%d.%s", Tdb_No, Name);
- } // end of Print
-
-/* -------------------------- class TDBASE --------------------------- */
-
-/***********************************************************************/
-/* Implementation of the TDBASE class. This is the base class to all */
-/* classes for tables that can be joined together. */
-/***********************************************************************/
-TDBASE::TDBASE(PTABDEF tdp) : TDB(tdp)
- {
- To_Def = tdp;
- To_Link = NULL;
- To_Key_Col = NULL;
- To_Kindex = NULL;
- To_SetCols = NULL;
- MaxSize = -1;
- Knum = 0;
- Read_Only = (tdp) ? tdp->IsReadOnly() : false;
- } // end of TDBASE constructor
-
-TDBASE::TDBASE(PTDBASE tdbp) : TDB(tdbp)
- {
- To_Def = tdbp->To_Def;
- To_SetCols = tdbp->To_SetCols; // ???
- MaxSize = tdbp->MaxSize;
- Read_Only = tdbp->Read_Only;
- } // end of TDBASE copy constructor
-
-/***********************************************************************/
-/* Return the pointer on the DB catalog this table belongs to. */
-/***********************************************************************/
-PCATLG TDBASE::GetCat(void)
- {
- return (To_Def) ? To_Def->GetCat() : NULL;
- } // end of GetCat
-
-/***********************************************************************/
-/* Return the datapath of the DB this table belongs to. */
-/***********************************************************************/
-PSZ TDBASE::GetPath(void)
- {
- return To_Def->GetPath();
- } // end of GetPath
-
-/***********************************************************************/
-/* Initialize TDBASE based column description block construction. */
-/* name is used to call columns by name. */
-/* num is used by TBL to construct columns by index number. */
-/* Note: name=Null and num=0 for constructing all columns (select *) */
-/***********************************************************************/
-PCOL TDBASE::ColDB(PGLOBAL g, PSZ name, int num)
- {
- int i;
- PCOLDEF cdp;
- PCOL cp, colp = NULL, cprec = NULL;
-
- if (trace)
- htrc("ColDB: am=%d colname=%s tabname=%s num=%d\n",
- GetAmType(), SVP(name), Name, num);
-
- for (cdp = To_Def->GetCols(), i = 1; cdp; cdp = cdp->GetNext(), i++)
- if ((!name && !num) ||
- (name && !stricmp(cdp->GetName(), name)) || num == i) {
- /*****************************************************************/
- /* Check for existence of desired column. */
- /* Also find where to insert the new block. */
- /*****************************************************************/
- for (cp = Columns; cp; cp = cp->GetNext())
- if (cp->GetIndex() < i)
- cprec = cp;
- else if (cp->GetIndex() == i)
- break;
-
- if (trace)
- htrc("cdp(%d).Name=%s cp=%p\n", i, cdp->GetName(), cp);
-
- /*****************************************************************/
- /* Now take care of Column Description Block. */
- /*****************************************************************/
- if (cp)
- colp = cp;
- else
- colp = MakeCol(g, cdp, cprec, i);
-
- if (trace)
- htrc("colp=%p\n", colp);
-
- if (name || num)
- break;
- else if (colp)
- cprec = colp;
-
- } // endif Name
-
- return (colp);
- } // end of ColDB
-
-/***********************************************************************/
-/* InsertSpecialColumn: Put a special column ahead of the column list.*/
-/***********************************************************************/
-PCOL TDBASE::InsertSpecialColumn(PGLOBAL g, PCOL colp)
- {
- if (!colp->IsSpecial())
- return NULL;
-
- colp->SetNext(Columns);
- Columns = colp;
- return colp;
- } // end of InsertSpecialColumn
-
-/***********************************************************************/
-/* Make a special COLBLK to insert in a table. */
-/***********************************************************************/
-PCOL TDBASE::InsertSpcBlk(PGLOBAL g, PCOLUMN cp)
- {
- char *name = (char*)cp->GetName();
- PCOL colp;
-
- if (!strcmp(name, "FILEID")) {
-// !strcmp(name, "SERVID")) {
- if (!To_Def || !(To_Def->GetPseudo() & 2)) {
- sprintf(g->Message, MSG(BAD_SPEC_COLUMN));
- return NULL;
- } // endif Pseudo
-
-// if (!strcmp(name, "FILEID"))
- colp = new(g) FIDBLK(cp);
-// else
-// colp = new(g) SIDBLK(cp);
-
- } else if (!strcmp(name, "TABID")) {
- colp = new(g) TIDBLK(cp);
-//} else if (!strcmp(name, "CONID")) {
-// colp = new(g) CIDBLK(cp);
- } else if (!strcmp(name, "ROWID")) {
- colp = new(g) RIDBLK(cp, false);
- } else if (!strcmp(name, "ROWNUM")) {
- colp = new(g) RIDBLK(cp, true);
- } else {
- sprintf(g->Message, MSG(BAD_SPECIAL_COL), name);
- return NULL;
- } // endif's name
-
- if (!(colp = InsertSpecialColumn(g, colp))) {
- sprintf(g->Message, MSG(BAD_SPECIAL_COL), name);
- return NULL;
- } // endif Insert
-
- return (colp);
- } // end of InsertSpcBlk
-
-/***********************************************************************/
-/* ResetTableOpt: Wrong for this table type. */
-/***********************************************************************/
-int TDBASE::ResetTableOpt(PGLOBAL g, bool dox)
-{
- strcpy(g->Message, "This table is not indexable");
- return RC_INFO;
-} // end of ResetTableOpt
-
-/***********************************************************************/
-/* SetKindex: set or reset the index pointer. */
-/***********************************************************************/
-void TDBASE::SetKindex(PKXBASE kxp)
- {
- if (To_Kindex)
- To_Kindex->Close(); // Discard old index
-
- To_Kindex = kxp;
- } // end of SetKindex
-
-/***********************************************************************/
-/* SetRecpos: Replace the table at the specified position. */
-/***********************************************************************/
-bool TDBASE::SetRecpos(PGLOBAL g, int recpos)
- {
- strcpy(g->Message, MSG(SETRECPOS_NIY));
- return true;
- } // end of SetRecpos
-
-/***********************************************************************/
-/* Methods */
-/***********************************************************************/
-void TDBASE::PrintAM(FILE *f, char *m)
- {
- fprintf(f, "%s AM(%d): mode=%d\n", m, GetAmType(), Mode);
- } // end of PrintAM
-
-/***********************************************************************/
-/* Marks DOS/MAP table columns used in internal joins. */
-/* tdb2 is the top of tree or first tdb in chained tdb's and tdbp */
-/* points to the currently marked tdb. */
-/* Two questions here: exact meaning of U_J_INT ? */
-/* Why is the eventual reference to To_Key_Col not marked U_J_EXT ? */
-/***********************************************************************/
-void TDBASE::MarkDB(PGLOBAL g, PTDB tdb2)
- {
- if (trace)
- htrc("DOS MarkDB: tdbp=%p tdb2=%p\n", this, tdb2);
-
- } // end of MarkDB
+/************** Table C++ Functions Source Code File (.CPP) ************/ +/* Name: TABLE.CPP Version 2.5 */ +/* */ +/* (C) Copyright to the author Olivier BERTRAND 1999-2012 */ +/* */ +/* This file contains the TBX, TDB and OPJOIN classes functions. */ +/***********************************************************************/ + +/***********************************************************************/ +/* Include relevant MariaDB header file. */ +/***********************************************************************/ +#include "my_global.h" + +/***********************************************************************/ +/* Include required application header files */ +/* global.h is header containing all global Plug declarations. */ +/* plgdbsem.h is header containing the DB applic. declarations. */ +/* xobject.h is header containing XOBJECT derived classes declares. */ +/***********************************************************************/ +#include "global.h" +#include "plgdbsem.h" +#include "xtable.h" +#include "tabcol.h" +#include "filamtxt.h" +#include "tabdos.h" +//#include "catalog.h" +#include "reldef.h" + +int TDB::Tnum = 0; + +extern "C" int trace; // The general trace value + +/***********************************************************************/ +/* Utility routines. */ +/***********************************************************************/ +void NewPointer(PTABS, void *, void *); +void AddPointer(PTABS, void *); + +/* ---------------------------- class TBX ---------------------------- */ + +/***********************************************************************/ +/* TBX public constructors. */ +/***********************************************************************/ +TBX::TBX(void) + { + Use = USE_NO; + To_Orig = NULL; + To_Filter = NULL; + } // end of TBX constructor + +TBX::TBX(PTBX txp) + { + Use = txp->Use; + To_Orig = txp; + To_Filter = NULL; + } // end of TBX copy constructor + +// Methods + +/* ---------------------------- class TDB ---------------------------- */ + +/***********************************************************************/ +/* TDB public constructors. */ +/***********************************************************************/ +TDB::TDB(PTABDEF tdp) : Tdb_No(++Tnum) + { + Next = NULL; + Name = (tdp) ? tdp->GetName() : NULL; + To_Table = NULL; + Columns = NULL; + Degree = (tdp) ? tdp->GetDegree() : 0; + Mode = MODE_READ; + } // end of TDB standard constructor + +TDB::TDB(PTDB tdbp) : TBX(tdbp), Tdb_No(++Tnum) + { + Next = NULL; + Name = tdbp->Name; + To_Table = tdbp->To_Table; + Columns = NULL; + Degree = tdbp->Degree; + Mode = tdbp->Mode; + } // end of TDB copy constructor + +/***********************************************************************/ +/* OpenTable: Call AM open routine. */ +/***********************************************************************/ +bool TDB::OpenTable(PGLOBAL g, PSQL sqlp, MODE mode) + { + if (trace) + htrc("Open Tdb_No=%d use=%d type=%d tdb.Mode=%d mode=%d\n", + Tdb_No, Use, GetAmType(), Mode, mode); + + switch (Use) { + case USE_LIN: + /*****************************************************************/ + /* If table is read/only, only MODE_READ is allowed. */ + /*****************************************************************/ + if (IsReadOnly() && mode != MODE_READ) { + strcpy(g->Message, MSG(READ_ONLY)); + return true; + } // endif ReadOnly + + /*****************************************************************/ + /* This could be done in any order. */ + /* Note: for not Read only first table in open in that mode. */ + /*****************************************************************/ + if (Next) + Next->OpenTable(g, sqlp, MODE_READ); + + Mode = mode; + + /*****************************************************************/ + /* Pre-opening is done, allocate select buffers now. */ + /*****************************************************************/ + Use = USE_READY; + break; + + case USE_READY: + /*****************************************************************/ + /* This is to open files in reverse order. */ + /*****************************************************************/ + if (Next) + if (Next->OpenTable(g, sqlp, mode)) + return true; + + /*****************************************************************/ + /* This was moved after filter conversion so filtering can be */ + /* done when making index tables for DOS files. */ + /* Also it was moved after allocating select buffers so some */ + /* data can be pre-read during open to allow storage sorting. */ + /*****************************************************************/ + if (OpenDB(g)) // Do open the table file + return true; + + Use = USE_OPEN; + break; + + case USE_OPEN: + /*****************************************************************/ + /* Table is already open. */ + /* Call open routine that will just "rewind" the files. */ + /*****************************************************************/ + if (OpenDB(g)) // Rewind the table file + return true; + + break; + + default: + sprintf(g->Message, MSG(TDB_USE_ERROR), Use); + return true; + } // endswitch Use + + return false; + } // end of OpenTable + +/***********************************************************************/ +/* CloseTable: Close a table of any AM type. */ +/***********************************************************************/ +void TDB::CloseTable(PGLOBAL g) + { + if (trace) + htrc("CloseTable: tdb_no %d use=%d amtype=%d am.Mode=%d\n", + Tdb_No, Use, GetAmType(), Mode); + + CloseDB(g); + Use = USE_READY; // x'7FFD' + Mode = MODE_ANY; + } // end of CloseTable + +// Methods + +/***********************************************************************/ +/* RowNumber: returns the current row ordinal number. */ +/***********************************************************************/ +int TDB::RowNumber(PGLOBAL g, bool b) + { + sprintf(g->Message, MSG(ROWID_NOT_IMPL), GetAmName(g, GetAmType())); + return 0; + } // end of RowNumber + +PTBX TDB::Copy(PTABS t) + { + PTDB tp, tdb1, tdb2 = NULL, outp = NULL; +//PGLOBAL g = t->G; // Is this really useful ??? + + for (tdb1 = this; tdb1; tdb1 = tdb1->Next) { + tp = tdb1->CopyOne(t); + + if (!outp) + outp = tp; + else + tdb2->Next = tp; + + tdb2 = tp; + NewPointer(t, tdb1, tdb2); + } // endfor tdb1 + + return outp; + } // end of Copy + +void TDB::Print(PGLOBAL g, FILE *f, uint n) + { + PCOL cp; + char m[64]; + + memset(m, ' ', n); // Make margin string + m[n] = '\0'; + + for (PTDB tp = this; tp; tp = tp->Next) { + fprintf(f, "%sTDB (%p) %s no=%d use=%d type=%d\n", m, + tp, tp->Name, tp->Tdb_No, tp->Use, tp->GetAmType()); + + tp->PrintAM(f, m); + fprintf(f, "%s Columns (deg=%d):\n", m, tp->Degree); + + for (cp = tp->Columns; cp; cp = cp->GetNext()) + cp->Print(g, f, n); + + } /* endfor tp */ + + } // end of Print + +void TDB::Print(PGLOBAL g, char *ps, uint z) + { + sprintf(ps, "R%d.%s", Tdb_No, Name); + } // end of Print + +/* -------------------------- class TDBASE --------------------------- */ + +/***********************************************************************/ +/* Implementation of the TDBASE class. This is the base class to all */ +/* classes for tables that can be joined together. */ +/***********************************************************************/ +TDBASE::TDBASE(PTABDEF tdp) : TDB(tdp) + { + To_Def = tdp; + To_Link = NULL; + To_Key_Col = NULL; + To_Kindex = NULL; + To_SetCols = NULL; + MaxSize = -1; + Knum = 0; + Read_Only = (tdp) ? tdp->IsReadOnly() : false; + } // end of TDBASE constructor + +TDBASE::TDBASE(PTDBASE tdbp) : TDB(tdbp) + { + To_Def = tdbp->To_Def; + To_SetCols = tdbp->To_SetCols; // ??? + MaxSize = tdbp->MaxSize; + Read_Only = tdbp->Read_Only; + } // end of TDBASE copy constructor + +/***********************************************************************/ +/* Return the pointer on the DB catalog this table belongs to. */ +/***********************************************************************/ +PCATLG TDBASE::GetCat(void) + { + return (To_Def) ? To_Def->GetCat() : NULL; + } // end of GetCat + +/***********************************************************************/ +/* Return the datapath of the DB this table belongs to. */ +/***********************************************************************/ +PSZ TDBASE::GetPath(void) + { + return To_Def->GetPath(); + } // end of GetPath + +/***********************************************************************/ +/* Initialize TDBASE based column description block construction. */ +/* name is used to call columns by name. */ +/* num is used by TBL to construct columns by index number. */ +/* Note: name=Null and num=0 for constructing all columns (select *) */ +/***********************************************************************/ +PCOL TDBASE::ColDB(PGLOBAL g, PSZ name, int num) + { + int i; + PCOLDEF cdp; + PCOL cp, colp = NULL, cprec = NULL; + + if (trace) + htrc("ColDB: am=%d colname=%s tabname=%s num=%d\n", + GetAmType(), SVP(name), Name, num); + + for (cdp = To_Def->GetCols(), i = 1; cdp; cdp = cdp->GetNext(), i++) + if ((!name && !num) || + (name && !stricmp(cdp->GetName(), name)) || num == i) { + /*****************************************************************/ + /* Check for existence of desired column. */ + /* Also find where to insert the new block. */ + /*****************************************************************/ + for (cp = Columns; cp; cp = cp->GetNext()) + if (cp->GetIndex() < i) + cprec = cp; + else if (cp->GetIndex() == i) + break; + + if (trace) + htrc("cdp(%d).Name=%s cp=%p\n", i, cdp->GetName(), cp); + + /*****************************************************************/ + /* Now take care of Column Description Block. */ + /*****************************************************************/ + if (cp) + colp = cp; + else + colp = MakeCol(g, cdp, cprec, i); + + if (trace) + htrc("colp=%p\n", colp); + + if (name || num) + break; + else if (colp) + cprec = colp; + + } // endif Name + + return (colp); + } // end of ColDB + +/***********************************************************************/ +/* InsertSpecialColumn: Put a special column ahead of the column list.*/ +/***********************************************************************/ +PCOL TDBASE::InsertSpecialColumn(PGLOBAL g, PCOL colp) + { + if (!colp->IsSpecial()) + return NULL; + + colp->SetNext(Columns); + Columns = colp; + return colp; + } // end of InsertSpecialColumn + +/***********************************************************************/ +/* Make a special COLBLK to insert in a table. */ +/***********************************************************************/ +PCOL TDBASE::InsertSpcBlk(PGLOBAL g, PCOLUMN cp) + { + char *name = (char*)cp->GetName(); + PCOL colp; + + if (!strcmp(name, "FILEID")) { +// !strcmp(name, "SERVID")) { + if (!To_Def || !(To_Def->GetPseudo() & 2)) { + sprintf(g->Message, MSG(BAD_SPEC_COLUMN)); + return NULL; + } // endif Pseudo + +// if (!strcmp(name, "FILEID")) + colp = new(g) FIDBLK(cp); +// else +// colp = new(g) SIDBLK(cp); + + } else if (!strcmp(name, "TABID")) { + colp = new(g) TIDBLK(cp); +//} else if (!strcmp(name, "CONID")) { +// colp = new(g) CIDBLK(cp); + } else if (!strcmp(name, "ROWID")) { + colp = new(g) RIDBLK(cp, false); + } else if (!strcmp(name, "ROWNUM")) { + colp = new(g) RIDBLK(cp, true); + } else { + sprintf(g->Message, MSG(BAD_SPECIAL_COL), name); + return NULL; + } // endif's name + + if (!(colp = InsertSpecialColumn(g, colp))) { + sprintf(g->Message, MSG(BAD_SPECIAL_COL), name); + return NULL; + } // endif Insert + + return (colp); + } // end of InsertSpcBlk + +/***********************************************************************/ +/* ResetTableOpt: Wrong for this table type. */ +/***********************************************************************/ +int TDBASE::ResetTableOpt(PGLOBAL g, bool dox) +{ + strcpy(g->Message, "This table is not indexable"); + return RC_INFO; +} // end of ResetTableOpt + +/***********************************************************************/ +/* SetKindex: set or reset the index pointer. */ +/***********************************************************************/ +void TDBASE::SetKindex(PKXBASE kxp) + { + if (To_Kindex) + To_Kindex->Close(); // Discard old index + + To_Kindex = kxp; + } // end of SetKindex + +/***********************************************************************/ +/* SetRecpos: Replace the table at the specified position. */ +/***********************************************************************/ +bool TDBASE::SetRecpos(PGLOBAL g, int recpos) + { + strcpy(g->Message, MSG(SETRECPOS_NIY)); + return true; + } // end of SetRecpos + +/***********************************************************************/ +/* Methods */ +/***********************************************************************/ +void TDBASE::PrintAM(FILE *f, char *m) + { + fprintf(f, "%s AM(%d): mode=%d\n", m, GetAmType(), Mode); + } // end of PrintAM + +/***********************************************************************/ +/* Marks DOS/MAP table columns used in internal joins. */ +/* tdb2 is the top of tree or first tdb in chained tdb's and tdbp */ +/* points to the currently marked tdb. */ +/* Two questions here: exact meaning of U_J_INT ? */ +/* Why is the eventual reference to To_Key_Col not marked U_J_EXT ? */ +/***********************************************************************/ +void TDBASE::MarkDB(PGLOBAL g, PTDB tdb2) + { + if (trace) + htrc("DOS MarkDB: tdbp=%p tdb2=%p\n", this, tdb2); + + } // end of MarkDB |