/* Copyright (C) Olivier Bertrand 2004 - 2017 Copyright (C) MariaDB Corporation Ab This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */ /***********************************************************************/ /* Author Olivier BERTRAND bertrandop@gmail.com 2004-2019 */ /* */ /* WHAT THIS PROGRAM DOES: */ /* ----------------------- */ /* This program are the CONNECT general purpose semantic routines. */ /***********************************************************************/ #ifdef USE_PRAGMA_IMPLEMENTATION #pragma implementation // gcc: Class implementation #endif /***********************************************************************/ /* Include application header files */ /* */ /* global.h is header containing all global declarations. */ /* plgdbsem.h is header containing the DB applic. declarations. */ /***********************************************************************/ #define DONT_DEFINE_VOID #include #include "handler.h" #undef OFFSET #include "global.h" #include "plgdbsem.h" #include "xobject.h" #include "connect.h" #include "tabcol.h" #include "catalog.h" #include "ha_connect.h" #define my_strupr(p) my_caseup_str(default_charset_info, (p)); #define my_strlwr(p) my_casedn_str(default_charset_info, (p)); #define my_stricmp(a, b) my_strcasecmp(default_charset_info, (a), (b)) /***********************************************************************/ /* Routines called internally by semantic routines. */ /***********************************************************************/ void CntEndDB(PGLOBAL); RCODE EvalColumns(PGLOBAL g, PTDB tdbp, bool reset, bool mrr= false); /***********************************************************************/ /* MySQL routines called externally by semantic routines. */ /***********************************************************************/ int rename_file_ext(const char *from, const char *to,const char *ext); /***********************************************************************/ /* CntExit: CONNECT termination routine. */ /***********************************************************************/ PGLOBAL CntExit(PGLOBAL g) { if (g) { CntEndDB(g); if (g->Activityp) { delete g->Activityp; g->Activityp = NULL; } // endif Activityp g= PlugExit(g); } // endif g return g; } // end of CntExit /***********************************************************************/ /* CntEndDB: DB termination semantic routine. */ /***********************************************************************/ void CntEndDB(PGLOBAL g) { PDBUSER dbuserp= PlgGetUser(g); if (dbuserp) { if (dbuserp->Catalog) delete dbuserp->Catalog; free(dbuserp); if (trace(1)) htrc("CntEndDB: Freeing Dup\n"); g->Activityp->Aptr = NULL; } // endif dbuserp } // end of CntEndDB /***********************************************************************/ /* CntCheckDB: Initialize a DB application session. */ /* Note: because MySQL does not call a storage handler when a user */ /* executes a use db command, a check must be done before an SQL */ /* command is executed to check whether we are still working on the */ /* current database, and if not to load the newly used database. */ /***********************************************************************/ bool CntCheckDB(PGLOBAL g, PHC handler, const char *pathname) { bool rc= false; PDBUSER dbuserp= PlgGetUser(g); if (trace(1)) { printf("CntCheckDB: dbuserp=%p\n", dbuserp); } // endif trace if (!dbuserp || !handler) return true; if (trace(1)) printf("cat=%p oldhandler=%p newhandler=%p\n", dbuserp->Catalog, (dbuserp->Catalog) ? ((MYCAT*)dbuserp->Catalog)->GetHandler() : NULL, handler); // Set the database path for this table if (handler->SetDataPath(g, pathname)) return true; if (dbuserp->Catalog) { return false; // Nothing else to do } // endif Catalog // Copy new database name in dbuser block strncpy(dbuserp->Name, "???", sizeof(dbuserp->Name) - 1); dbuserp->Vtdbno= 0; // Init of TDB numbers /*********************************************************************/ /* Now allocate and initialize the Database Catalog. */ /*********************************************************************/ dbuserp->Step= MSG(READY); if (!(dbuserp->Catalog= new MYCAT(handler))) return true; /*********************************************************************/ /* All is correct. */ /*********************************************************************/ sprintf(g->Message, MSG(DATABASE_LOADED), "???"); if (trace(1)) printf("msg=%s\n", g->Message); return rc; } // end of CntCheckDB /***********************************************************************/ /* CntInfo: Get table info. */ /* Returns valid: true if this is a table info. */ /***********************************************************************/ bool CntInfo(PGLOBAL g, PTDB tp, PXF info) { if (tp) { bool b = (tp->GetFtype() == RECFM_NAF); PTDBDOS tdbp = b ? NULL : (PTDBDOS)tp; info->data_file_length = (b) ? 0 : (ulonglong)tdbp->GetFileLength(g); if (b || info->data_file_length) info->records= (unsigned)tp->Cardinality(g); // info->records= (unsigned)tp->GetMaxSize(g); else info->records= 0; // info->mean_rec_length= tdbp->GetLrecl(); info->mean_rec_length= 0; info->data_file_name= (b) ? NULL : (char*)tdbp->GetFile(g); return true; } else { info->data_file_length= 0; info->records= 0; info->mean_rec_length= 0; info->data_file_name= NULL; return false; } // endif tdbp } // end of CntInfo /***********************************************************************/ /* GetTDB: Get the table description block of a CONNECT table. */ /***********************************************************************/ PTDB CntGetTDB(PGLOBAL g, LPCSTR name, MODE mode, PHC h) { PTDB tdbp = NULL; PTABLE tabp; PDBUSER dup = PlgGetUser(g); volatile PCATLG cat = (dup) ? dup->Catalog : NULL; // Safe over throw if (trace(1)) printf("CntGetTDB: name=%s mode=%d cat=%p\n", name, mode, cat); if (!cat) return NULL; try { // Get table object from the catalog tabp = new(g) XTAB(name); if (trace(1)) printf("CntGetTDB: tabp=%p\n", tabp); // Perhaps this should be made thread safe ((MYCAT*)cat)->SetHandler(h); if (!(tdbp = cat->GetTable(g, tabp, mode))) printf("CntGetTDB: %s\n", g->Message); } catch (int n) { if (trace(1)) htrc("Exception %d: %s\n", n, g->Message); } catch (const char *msg) { strcpy(g->Message, msg); } // end catch if (trace(1)) printf("Returning tdbp=%p mode=%d\n", tdbp, mode); return tdbp; } // end of CntGetTDB /***********************************************************************/ /* OPENTAB: Open a Table. */ /***********************************************************************/ bool CntOpenTable(PGLOBAL g, PTDB tdbp, MODE mode, char *c1, char *c2, bool del, PHC) { char *p; int i, n; bool rcop= true; PCOL colp; //PCOLUMN cp; PDBUSER dup= PlgGetUser(g); if (trace(1)) printf("CntOpenTable: tdbp=%p mode=%d\n", tdbp, mode); if (!tdbp) { strcpy(g->Message, "Null tdbp"); printf("CntOpenTable: %s\n", g->Message); return true; } // endif tdbp try { if (!c1) { // if (mode == MODE_INSERT) or CHECK TABLE // Allocate all column blocks for that table tdbp->ColDB(g, NULL, 0); } else for (p = c1; *p; p += n) { // Allocate only used column blocks if (trace(1)) printf("Allocating column %s\n", p); g->Message[0] = 0; // To check whether ColDB made an error message colp = tdbp->ColDB(g, p, 0); if (!colp && !(mode == MODE_INSERT && tdbp->IsSpecial(p))) { if (g->Message[0] == 0) sprintf(g->Message, MSG(COL_ISNOT_TABLE), p, tdbp->GetName()); throw 1; } // endif colp n = strlen(p) + 1; } // endfor p for (i = 0, colp = tdbp->GetColumns(); colp; i++, colp = colp->GetNext()) { if (colp->InitValue(g)) throw 2; if (mode == MODE_INSERT) // Allow type conversion if (colp->SetBuffer(g, colp->GetValue(), true, false)) throw 3; colp->AddColUse(U_P); // For PLG tables } // endfor colp /*******************************************************************/ /* In Update mode, the updated column blocks must be distinct from */ /* the read column blocks. So make a copy of the TDB and allocate */ /* its column blocks in mode write (required by XML tables). */ /*******************************************************************/ if (mode == MODE_UPDATE) { PTDBASE utp; if (!(utp = (PTDBASE)tdbp->Duplicate(g))) { sprintf(g->Message, MSG(INV_UPDT_TABLE), tdbp->GetName()); throw 4; } // endif tp if (!c2) // Allocate all column blocks for that table utp->ColDB(g, NULL, 0); else for (p = c2; *p; p += n) { // Allocate only used column blocks colp = utp->ColDB(g, p, 0); n = strlen(p) + 1; } // endfor p for (i = 0, colp = utp->GetColumns(); colp; i++, colp = colp->GetNext()) { if (colp->InitValue(g)) throw 5; if (colp->SetBuffer(g, colp->GetValue(), true, false)) throw 6; } // endfor colp // Attach the updated columns list to the main table tdbp->SetSetCols(utp->GetColumns()); } else if (tdbp && mode == MODE_INSERT) tdbp->SetSetCols(tdbp->GetColumns()); // Now do open the physical table if (trace(1)) printf("Opening table %s in mode %d tdbp=%p\n", tdbp->GetName(), mode, tdbp); //tdbp->SetMode(mode); if (del/* && (tdbp->GetFtype() != RECFM_NAF*/) { // To avoid erasing the table when doing a partial delete // make a fake Next // PDOSDEF ddp= new(g) DOSDEF; // PTDB tp= new(g) TDBDOS(ddp, NULL); tdbp->SetNext((PTDB)1); dup->Check &= ~CHK_DELETE; } // endif del if (trace(1)) printf("About to open the table: tdbp=%p\n", tdbp); if (mode != MODE_ANY && mode != MODE_ALTER) { if (tdbp->OpenDB(g)) { printf("%s\n", g->Message); throw 7; } else tdbp->SetNext(NULL); } // endif mode rcop = false; } catch (int n) { if (trace(1)) htrc("Exception %d: %s\n", n, g->Message); } catch (const char *msg) { strcpy(g->Message, msg); } // end catch return rcop; } // end of CntOpenTable /***********************************************************************/ /* Rewind a table by reopening it. */ /***********************************************************************/ bool CntRewindTable(PGLOBAL g, PTDB tdbp) { if (!tdbp) return true; tdbp->OpenDB(g); return false; } // end of CntRewindTable /***********************************************************************/ /* Evaluate all columns after a record is read. */ /***********************************************************************/ RCODE EvalColumns(PGLOBAL g, PTDB tdbp, bool reset, bool mrr) { RCODE rc= RC_OK; PCOL colp; try { for (colp = tdbp->GetColumns(); rc == RC_OK && colp; colp = colp->GetNext()) { xtrc(2, "Going to read column %s of table %s\n", colp->GetName(), tdbp->GetName()); if (reset) colp->Reset(); // Virtual columns are computed by MariaDB if (!colp->GetColUse(U_VIRTUAL) && (!mrr || colp->GetKcol())) if (colp->Eval(g)) rc = RC_FX; } // endfor colp } catch (int n) { if (trace(1)) printf("Error %d reading columns: %s\n", n, g->Message); rc = RC_FX; } catch (const char *msg) { strcpy(g->Message, msg); rc = RC_NF; } // end catch return rc; } // end of EvalColumns /***********************************************************************/ /* ReadNext: Read next record sequentially. */ /***********************************************************************/ RCODE CntReadNext(PGLOBAL g, PTDB tdbp) { RCODE rc; if (!tdbp) return RC_FX; else if (tdbp->GetKindex()) { // Reading sequencially an indexed table. This happens after the // handler function records_in_range was called and MySQL decides // to quit using the index (!!!) Drop the index. // for (PCOL colp= tdbp->GetColumns(); colp; colp= colp->GetNext()) // colp->SetKcol(NULL); ((PTDBASE)tdbp)->ResetKindex(g, NULL); } // endif index try { // Do it now to avoid double eval when filtering for (PCOL colp = tdbp->GetColumns(); colp; colp = colp->GetNext()) colp->Reset(); do { if ((rc = (RCODE)tdbp->ReadDB(g)) == RC_OK) if (!ApplyFilter(g, tdbp->GetFilter())) rc = RC_NF; } while (rc == RC_NF); if (rc == RC_OK) rc = EvalColumns(g, tdbp, false); } catch (int) { rc = RC_FX; } catch (const char *msg) { strcpy(g->Message, msg); rc = RC_FX; } // end catch return rc; } // end of CntReadNext /***********************************************************************/ /* WriteRow: Insert a new row into a table. */ /***********************************************************************/ RCODE CntWriteRow(PGLOBAL g, PTDB tdbp) { RCODE rc; PCOL colp; //PTDBASE tp= (PTDBASE)tdbp; if (!tdbp) return RC_FX; try { // Store column values in table write buffer(s) for (colp = tdbp->GetSetCols(); colp; colp = colp->GetNext()) if (!colp->GetColUse(U_VIRTUAL)) colp->WriteColumn(g); if (tdbp->IsIndexed()) // Index values must be sorted before updating rc = (RCODE)((PTDBDOS)tdbp)->GetTxfp()->StoreValues(g, true); else // Return result code from write operation rc = (RCODE)tdbp->WriteDB(g); } catch (int n) { printf("Exception %d: %s\n", n, g->Message); rc = RC_FX; } catch (const char *msg) { strcpy(g->Message, msg); rc = RC_FX; } // end catch return rc; } // end of CntWriteRow /***********************************************************************/ /* UpdateRow: Update a row into a table. */ /***********************************************************************/ RCODE CntUpdateRow(PGLOBAL g, PTDB tdbp) { if (!tdbp || tdbp->GetMode() != MODE_UPDATE) return RC_FX; // Return result code from write operation return CntWriteRow(g, tdbp); } // end of CntUpdateRow /***********************************************************************/ /* DeleteRow: Delete a row from a table. */ /***********************************************************************/ RCODE CntDeleteRow(PGLOBAL g, PTDB tdbp, bool all) { RCODE rc; //PTDBASE tp= (PTDBASE)tdbp; if (!tdbp || tdbp->GetMode() != MODE_DELETE) return RC_FX; else if (tdbp->IsReadOnly()) return RC_NF; if (all) { if (tdbp->GetDef()->Indexable()) ((PTDBDOS)tdbp)->Cardinal= 0; // Note: if all, this call will be done when closing the table rc= (RCODE)tdbp->DeleteDB(g, RC_FX); //} else if (tdbp->GetKindex() && !((PTDBASE)tdbp)->GetKindex()->IsSorted() && // ((PTDBASE)tdbp)->Txfp->GetAmType() != TYPE_AM_DBF) { } else if(tdbp->IsIndexed()) { // Index values must be sorted before updating rc= (RCODE)((PTDBDOS)tdbp)->GetTxfp()->StoreValues(g, false); } else // Return result code from delete operation rc= (RCODE)tdbp->DeleteDB(g, RC_OK); return rc; } // end of CntDeleteRow /***********************************************************************/ /* CLOSETAB: Close a table. */ /***********************************************************************/ int CntCloseTable(PGLOBAL g, PTDB tdbp, bool nox, bool abort) { int rc = RC_OK; //TDBASE *tbxp= (PTDBASE)tdbp; if (!tdbp) return rc; // Nothing to do else if (tdbp->GetUse() != USE_OPEN) { if (tdbp->GetAmType() == TYPE_AM_XML) tdbp->CloseDB(g); // Opened by GetMaxSize return rc; } // endif !USE_OPEN if (trace(1)) printf("CntCloseTable: tdbp=%p mode=%d nox=%d abort=%d\n", tdbp, tdbp->GetMode(), nox, abort); if (tdbp->GetMode() == MODE_DELETE && tdbp->GetUse() == USE_OPEN) { if (tdbp->IsIndexed()) rc = ((PTDBDOS)tdbp)->GetTxfp()->DeleteSortedRows(g); if (!rc) rc = tdbp->DeleteDB(g, RC_EF); // Specific A.M. delete routine } else if (tdbp->GetMode() == MODE_UPDATE && tdbp->IsIndexed()) rc = ((PTDBDOS)tdbp)->GetTxfp()->UpdateSortedRows(g); switch (rc) { case RC_FX: abort = true; break; case RC_INFO: PushWarning(g, tdbp); break; } // endswitch rc try { // This will close the table file(s) and also finalize write // operations such as Insert, Update, or Delete. tdbp->SetAbort(abort); tdbp->CloseDB(g); tdbp->SetAbort(false); if (trace(2)) printf("Table %s closed\n", tdbp->GetName()); if (!nox && tdbp->GetMode() != MODE_READ && tdbp->GetMode() != MODE_ANY) { if (trace(2)) printf("About to reset opt\n"); if (!tdbp->IsRemote()) { // Make all the eventual indexes PTDBDOS tbxp = (PTDBDOS)tdbp; tbxp->ResetKindex(g, NULL); tbxp->SetKey_Col(NULL); rc = tbxp->ResetTableOpt(g, true, tbxp->GetDef()->Indexable() == 1); } // endif remote } // endif nox } catch (int) { rc = RC_FX; } catch (const char *msg) { strcpy(g->Message, msg); rc = RC_FX; } // end catch if (trace(2)) htrc("Done rc=%d\n", rc); return (rc == RC_OK || rc == RC_INFO) ? 0 : rc; } // end of CntCloseTable /***********************************************************************/ /* Load and initialize the use of an index. */ /* This is the condition(s) for doing indexing. */ /* Note: FIX table are not reset here to Nrec= 1. */ /***********************************************************************/ int CntIndexInit(PGLOBAL g, PTDB ptdb, int id, bool sorted) { PIXDEF xdp; PTDBDOS tdbp; DOSDEF *dfp; if (!ptdb) return -1; else if (!ptdb->GetDef()->Indexable()) { sprintf(g->Message, MSG(TABLE_NO_INDEX), ptdb->GetName()); return 0; } else if (ptdb->GetDef()->Indexable() == 3) { return 1; } else tdbp= (PTDBDOS)ptdb; dfp= (DOSDEF*)tdbp->GetDef(); //if (!(k= colp->GetKey())) // if (colp->GetOpt() >= 2) { // strcpy(g->Message, "Not a valid indexed column"); // return -1; // } else // This is a pseudo indexed sorted block optimized column // return 0; if (tdbp->GetKindex()) { if (((XXBASE*)tdbp->GetKindex())->GetID() == id) { tdbp->GetKindex()->Reset(); // Same index return (tdbp->GetKindex()->IsMul()) ? 2 : 1; } else { tdbp->GetKindex()->Close(); tdbp->SetKindex(NULL); } // endif colp } for (xdp= dfp->GetIndx(); xdp; xdp= xdp->GetNext()) if (xdp->GetID() == id) break; if (!xdp) { sprintf(g->Message, "Wrong index ID %d", id); return 0; } // endif xdp #if 0 if (xdp->IsDynamic()) { // This is a dynamically created index (KINDEX) // It should not be created now, if called by index range tdbp->SetXdp(xdp); return (xdp->IsUnique()) ? 1 : 2; } // endif dynamic #endif // 0 // Static indexes must be initialized now for records_in_range if (tdbp->InitialyzeIndex(g, xdp, sorted)) return 0; return (tdbp->GetKindex()->IsMul()) ? 2 : 1; } // end of CntIndexInit #if defined(WORDS_BIGENDIAN) /***********************************************************************/ /* Swap bytes of the key that are written in little endian order. */ /***********************************************************************/ static void SetSwapValue(PVAL valp, char *kp) { if (valp->IsTypeNum() && valp->GetType() != TYPE_DECIM) { uchar buf[8]; int i, k= valp->GetClen(); for (i = 0; k > 0;) buf[i++]= kp[--k]; valp->SetBinValue((void*)buf); } else valp->SetBinValue((void*)kp); } // end of SetSwapValue #endif // WORDS_BIGENDIAN /***********************************************************************/ /* IndexRead: fetch a record having the index value. */ /***********************************************************************/ RCODE CntIndexRead(PGLOBAL g, PTDB ptdb, OPVAL op, const key_range *kr, bool mrr) { int n, x; RCODE rc; XXBASE *xbp; PTDBDOS tdbp; if (!ptdb) return RC_FX; else x= ptdb->GetDef()->Indexable(); if (!x) { sprintf(g->Message, MSG(TABLE_NO_INDEX), ptdb->GetName()); return RC_FX; } else if (x == 2) { // Remote index. Only used in read mode if ((ptdb->GetMode() == MODE_READ || ptdb->GetMode() == MODE_READX) && op != OP_SAME && ptdb->ReadKey(g, op, kr)) return RC_FX; goto rnd; } else if (x == 3) { if (kr) ((PTDBASE)ptdb)->SetRecpos(g, *(int*)kr->key); if (op == OP_SAME) return RC_NF; goto rnd; } else tdbp= (PTDBDOS)ptdb; // Set reference values and index operator if (!tdbp->GetLink() || !tdbp->GetKindex()) { // if (!tdbp->To_Xdp) { sprintf(g->Message, "Index not initialized for table %s", tdbp->GetName()); return RC_FX; #if 0 } // endif !To_Xdp // Now it's time to make the dynamic index if (tdbp->InitialyzeIndex(g, NULL, false)) { sprintf(g->Message, "Fail to make dynamic index %s", tdbp->To_Xdp->GetName()); return RC_FX; } // endif MakeDynamicIndex #endif // 0 } // endif !To_Kindex xbp= (XXBASE*)tdbp->GetKindex(); if (kr) { char *kp= (char*)kr->key; int len= kr->length; short lg; bool rcb; PVAL valp; PCOL colp; for (n= 0; n < tdbp->GetKnum(); n++) { colp= (PCOL)tdbp->Key(n); if (colp->GetColUse(U_NULLS)) kp++; // Skip null byte valp= tdbp->Link(n)->GetValue(); if (!valp->IsTypeNum()) { if (colp->GetColUse(U_VAR)) { #if defined(WORDS_BIGENDIAN) ((char*)&lg)[0]= ((char*)kp)[1]; ((char*)&lg)[1]= ((char*)kp)[0]; #else // !WORDS_BIGENDIAN lg= *(short*)kp; #endif //!WORDS_BIGENDIAN kp+= sizeof(short); rcb= valp->SetValue_char(kp, (int)lg); } else rcb= valp->SetValue_char(kp, valp->GetClen()); if (rcb) { if (tdbp->RowNumber(g)) sprintf(g->Message, "Out of range value for column %s at row %d", colp->GetName(), tdbp->RowNumber(g)); else sprintf(g->Message, "Out of range value for column %s", colp->GetName()); PushWarning(g, tdbp); } // endif b } else #if defined(WORDS_BIGENDIAN) SetSwapValue(valp, kp); #else // !WORDS_BIGENDIAN valp->SetBinValue((void*)kp); #endif //!WORDS_BIGENDIAN kp+= valp->GetClen(); if (len == kp - (char*)kr->key) { n++; break; } else if (len < kp - (char*)kr->key) { strcpy(g->Message, "Key buffer is too small"); return RC_FX; } // endif len } // endfor n xbp->SetNval(n); } // endif key xbp->SetOp(op); xbp->SetNth(0); rnd: if ((rc= (RCODE)ptdb->ReadDB(g)) == RC_OK) rc= EvalColumns(g, ptdb, true, mrr); return rc; } // end of CntIndexRead /***********************************************************************/ /* Return the number of rows matching given values. */ /***********************************************************************/ int CntIndexRange(PGLOBAL g, PTDB ptdb, const uchar* *key, uint *len, bool *incl, key_part_map *kmap) { const uchar *p, *kp; int i, n, x, k[2]; short lg; bool b, rcb; PVAL valp; PCOL colp; PTDBDOS tdbp; XXBASE *xbp; if (!ptdb) return -1; x= ptdb->GetDef()->Indexable(); if (!x) { sprintf(g->Message, MSG(TABLE_NO_INDEX), ptdb->GetName()); DBUG_PRINT("Range", ("%s", g->Message)); return -1; } else if (x == 2) { // Remote index return 2; } else if (x == 3) { // Virtual index for (i= 0; i < 2; i++) if (key[i]) k[i] = *(int*)key[i] + (incl[i] ? 0 : 1 - 2 * i); else k[i] = (i) ? ptdb->Cardinality(g) : 1; return k[1] - k[0] + 1; } else tdbp= (PTDBDOS)ptdb; if (!tdbp->GetKindex() || !tdbp->GetLink()) { if (!tdbp->GetXdp()) { sprintf(g->Message, "Index not initialized for table %s", tdbp->GetName()); DBUG_PRINT("Range", ("%s", g->Message)); return -1; } else // Dynamic index return tdbp->GetXdp()->GetMaxSame(); // TODO a better estimate } else xbp= (XXBASE*)tdbp->GetKindex(); for (b= false, i= 0; i < 2; i++) { p= kp= key[i]; if (kp) { for (n= 0; n < tdbp->GetKnum(); n++) { if (kmap[i] & (key_part_map)(1 << n)) { if (b == true) // Cannot do indexing with missing intermediate key return -1; colp= (PCOL)tdbp->Key(n); if (colp->GetColUse(U_NULLS)) p++; // Skip null byte ??? valp= tdbp->Link(n)->GetValue(); if (!valp->IsTypeNum()) { if (colp->GetColUse(U_VAR)) { #if defined(WORDS_BIGENDIAN) ((char*)&lg)[0]= ((char*)p)[1]; ((char*)&lg)[1]= ((char*)p)[0]; #else // !WORDS_BIGENDIAN lg= *(short*)p; #endif //!WORDS_BIGENDIAN p+= sizeof(short); rcb= valp->SetValue_char((char*)p, (int)lg); } else rcb= valp->SetValue_char((char*)p, valp->GetClen()); if (rcb) { if (tdbp->RowNumber(g)) sprintf(g->Message, "Out of range value for column %s at row %d", colp->GetName(), tdbp->RowNumber(g)); else sprintf(g->Message, "Out of range value for column %s", colp->GetName()); PushWarning(g, tdbp); } // endif b } else #if defined(WORDS_BIGENDIAN) SetSwapValue(valp, (char*)p); #else // !WORDS_BIGENDIAN valp->SetBinValue((void*)p); #endif // !WORDS_BIGENDIAN if (trace(1)) { char bf[32]; printf("i=%d n=%d key=%s\n", i, n, valp->GetCharString(bf)); } // endif trace p+= valp->GetClen(); if (len[i] == (unsigned)(p - kp)) { n++; break; } else if (len[i] < (unsigned)(p - kp)) { strcpy(g->Message, "Key buffer is too small"); return -1; } // endif len } else b= true; } // endfor n xbp->SetNval(n); if (trace(1)) printf("xbp=%p Nval=%d i=%d incl=%d\n", xbp, n, i, incl[i]); k[i]= xbp->Range(g, i + 1, incl[i]); } else k[i]= (i) ? xbp->GetNum_K() : 0; } // endfor i if (trace(1)) printf("k1=%d k0=%d\n", k[1], k[0]); return k[1] - k[0]; } // end of CntIndexRange