/ Check-in [676de55b]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Add xUpdate method to the echo test module. Currently untested. (CVS 3246)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:676de55b28f0b22cf78f5e71f4a960f3d76c2d72
User & Date: danielk1977 2006-06-14 15:16:36
Context
2006-06-14
15:35
Better documentation on the limits of user-defined functions. And a marginally better error message when those limits are exceeded. Ticket #1847. (CVS 3247) check-in: 0d369ff0 user: drh tags: trunk
15:16
Add xUpdate method to the echo test module. Currently untested. (CVS 3246) check-in: 676de55b user: danielk1977 tags: trunk
15:14
Fix segfault introduced in (3243). (CVS 3245) check-in: e5fff87d user: danielk1977 tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/test8.c.

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
...
469
470
471
472
473
474
475









































































476
477
478
479
480
481
482
...
488
489
490
491
492
493
494
495

496
497
498
499
500
501
502
**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the virtual table interfaces.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test8.c,v 1.16 2006/06/14 10:55:53 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

................................................................................

  pIdxInfo->idxNum = hashString(zQuery);
  pIdxInfo->idxStr = zQuery;
  pIdxInfo->needToFreeIdxStr = 1;
  pIdxInfo->estimatedCost = 1.0;
  return SQLITE_OK;
}










































































/*
** A virtual table module that merely echos method calls into TCL
** variables.
*/
static sqlite3_module echoModule = {
  0,                         /* iVersion */
................................................................................
  echoDisconnect, 
  echoDestroy,
  echoOpen,                  /* xOpen - open a cursor */
  echoClose,                 /* xClose - close a cursor */
  echoFilter,                /* xFilter - configure scan constraints */
  echoNext,                  /* xNext - advance a cursor */
  echoColumn,                /* xColumn - read data */
  echoRowid                  /* xRowid - read data */

};

/*
** Decode a pointer to an sqlite3 object.
*/
static int getDbPointer(Tcl_Interp *interp, const char *zA, sqlite3 **ppDb){
  *ppDb = (sqlite3*)sqlite3TextToPtr(zA);







|







 







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







 







|
>







9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
...
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
...
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the virtual table interfaces.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test8.c,v 1.17 2006/06/14 15:16:36 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

................................................................................

  pIdxInfo->idxNum = hashString(zQuery);
  pIdxInfo->idxStr = zQuery;
  pIdxInfo->needToFreeIdxStr = 1;
  pIdxInfo->estimatedCost = 1.0;
  return SQLITE_OK;
}

int echoUpdate(sqlite3_vtab *tab, int nData, sqlite3_value **apData){
  echo_vtab *pVtab = (echo_vtab *)tab;
  sqlite3 *db = pVtab->db;
  int rc = SQLITE_OK;

  assert( nData==pVtab->nCol+2 || nData==1 );

  /* If apData[0] is an integer, delete the identified row */
  if( sqlite3_value_type(apData[0])==SQLITE_INTEGER ){
    const char *zFormat = "DELETE FROM %Q WHERE rowid = ?";
    char *zDelete = sqlite3_mprintf(zFormat, pVtab->zTableName);
    if( !zDelete ){
      rc = SQLITE_NOMEM;
    }else{
      sqlite3_stmt *pStmt = 0;
      rc = sqlite3_prepare(db, zDelete, -1, &pStmt, 0);
      assert( rc!=SQLITE_OK || pStmt );
      if( rc==SQLITE_OK ){
        sqlite3_step(pStmt);
        rc = sqlite3_finalize(pStmt);
      }
    }
  }

  /* If there is more than a single argument, INSERT a new row */
  if( rc==SQLITE_OK && nData>1 ){
    int ii;
    char *zInsert = 0;
    char *zValues = 0;
    char *zQuery = 0;
    const char *zTab = pVtab->zTableName;

    zInsert = sqlite3_mprintf("INSERT OR REPLACE INTO %Q (rowid", zTab);
    zValues = sqlite3_mprintf("?");

    for(ii=0; ii<pVtab->nCol && zInsert && zValues; ii++){
      char *zNew = sqlite3_mprintf("%s, %Q", zInsert, pVtab->aCol[ii]);
      sqliteFree(zInsert);
      zInsert = zNew;

      zNew = sqlite3_mprintf("%s, ?", zValues);
      sqliteFree(zValues);
      zValues = zNew;
    }

    if( zInsert && zValues ){
      zQuery = sqlite3_mprintf("%s) VALUES(%s)", zInsert, zValues);
    }
    if( zQuery ){
      sqlite3_stmt *pStmt = 0;
      rc = sqlite3_prepare(db, zQuery, -1, &pStmt, 0);
      for(ii=1; rc==SQLITE_OK && ii<nData; ii++){
        rc = sqlite3_bind_value(pStmt, ii, apData[ii]);
      }
      if( rc==SQLITE_OK ){
        sqlite3_step(pStmt);
        rc = sqlite3_finalize(pStmt);
      }else{
        sqlite3_finalize(pStmt);
      }
    }

    sqliteFree(zValues);
    sqliteFree(zInsert);
    sqliteFree(zQuery);
    if( rc==SQLITE_OK && (!zValues || !zInsert || !zQuery) ){
      rc = SQLITE_NOMEM;
    }
  }

  return rc;
}

/*
** A virtual table module that merely echos method calls into TCL
** variables.
*/
static sqlite3_module echoModule = {
  0,                         /* iVersion */
................................................................................
  echoDisconnect, 
  echoDestroy,
  echoOpen,                  /* xOpen - open a cursor */
  echoClose,                 /* xClose - close a cursor */
  echoFilter,                /* xFilter - configure scan constraints */
  echoNext,                  /* xNext - advance a cursor */
  echoColumn,                /* xColumn - read data */
  echoRowid,                 /* xRowid - read data */
  echoUpdate                 /* xUpdate - write data */
};

/*
** Decode a pointer to an sqlite3 object.
*/
static int getDbPointer(Tcl_Interp *interp, const char *zA, sqlite3 **ppDb){
  *ppDb = (sqlite3*)sqlite3TextToPtr(zA);

Changes to src/vdbeapi.c.

707
708
709
710
711
712
713









714
715
716
717
718
719
720
  const void *zData, 
  int nData, 
  void (*xDel)(void*)
){
  return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF16NATIVE);
}
#endif /* SQLITE_OMIT_UTF16 */










/*
** Return the number of wildcards that can be potentially bound to.
** This routine is added to support DBD::SQLite.  
*/
int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){
  Vdbe *p = (Vdbe*)pStmt;







>
>
>
>
>
>
>
>
>







707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
  const void *zData, 
  int nData, 
  void (*xDel)(void*)
){
  return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF16NATIVE);
}
#endif /* SQLITE_OMIT_UTF16 */
int sqlite3_bind_value(sqlite3_stmt *pStmt, int i, const sqlite3_value *pValue){
  int rc;
  Vdbe *p = (Vdbe *)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3VdbeMemCopy(&p->aVar[i-1], pValue);
  }
  return rc;
}

/*
** Return the number of wildcards that can be potentially bound to.
** This routine is added to support DBD::SQLite.  
*/
int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){
  Vdbe *p = (Vdbe*)pStmt;