/ MUL Access Method opening routine. */ Open first file, other will be opened sequencially when reading. */ /
| 371 | /* Open first file, other will be opened sequencially when reading. */ |
| 372 | /***********************************************************************/ |
| 373 | bool TDBMUL::OpenDB(PGLOBAL g) |
| 374 | { |
| 375 | if (trace(1)) |
| 376 | htrc("MUL OpenDB: tdbp=%p tdb=R%d use=%d key=%p mode=%d\n", |
| 377 | this, Tdb_No, Use, To_Key_Col, Mode); |
| 378 | |
| 379 | if (Use == USE_OPEN) { |
| 380 | /*******************************************************************/ |
| 381 | /* Table already open, replace it at its beginning. */ |
| 382 | /*******************************************************************/ |
| 383 | if (Filenames[iFile = 0]) { |
| 384 | Tdbp->CloseDB(g); |
| 385 | Tdbp->SetUse(USE_READY); |
| 386 | Tdbp->SetFile(g, Filenames[iFile = 0]); |
| 387 | Tdbp->ResetSize(); |
| 388 | Rows = 0; |
| 389 | ResetDB(); |
| 390 | return Tdbp->OpenDB(g); // Re-open with new file name |
| 391 | } else |
| 392 | return false; |
| 393 | |
| 394 | } // endif use |
| 395 | |
| 396 | /*********************************************************************/ |
| 397 | /* We need to calculate MaxSize before opening the query. */ |
| 398 | /*********************************************************************/ |
| 399 | if (GetMaxSize(g) < 0) |
| 400 | return true; |
| 401 | |
| 402 | /*********************************************************************/ |
| 403 | /* Open the first table file of the list. */ |
| 404 | /*********************************************************************/ |
| 405 | //if (!Filenames && InitFileNames(g)) // was done in GetMaxSize |
| 406 | // return true; |
| 407 | |
| 408 | if (Filenames[iFile = 0]) { |
| 409 | Tdbp->SetFile(g, Filenames[0]); |
| 410 | Tdbp->SetMode(Mode); |
| 411 | Tdbp->ResetDB(); |
| 412 | Tdbp->ResetSize(); |
| 413 | |
| 414 | if (Tdbp->OpenDB(g)) |
| 415 | return true; |
| 416 | |
| 417 | } // endif *Filenames |
| 418 | |
| 419 | Use = USE_OPEN; |
| 420 | return false; |
| 421 | } // end of OpenDB |
| 422 | |
| 423 | /***********************************************************************/ |
| 424 | /* ReadDB: Data Base read routine for MUL access method. */ |
no test coverage detected