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dbpage.c

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1/*-
2** 2017-10-11-
3**-
4** The author disclaims copyright to this source code. In place of-
5** a legal notice, here is a blessing:-
6**-
7** May you do good and not evil.-
8** May you find forgiveness for yourself and forgive others.-
9** May you share freely, never taking more than you give.-
10**-
11******************************************************************************-
12**-
13** This file contains an implementation of the "sqlite_dbpage" virtual table.-
14**-
15** The sqlite_dbpage virtual table is used to read or write whole raw-
16** pages of the database file. The pager interface is used so that -
17** uncommitted changes and changes recorded in the WAL file are correctly-
18** retrieved.-
19**-
20** Usage example:-
21**-
22** SELECT data FROM sqlite_dbpage('aux1') WHERE pgno=123;-
23**-
24** This is an eponymous virtual table so it does not need to be created before-
25** use. The optional argument to the sqlite_dbpage() table name is the-
26** schema for the database file that is to be read. The default schema is-
27** "main".-
28**-
29** The data field of sqlite_dbpage table can be updated. The new-
30** value must be a BLOB which is the correct page size, otherwise the-
31** update fails. Rows may not be deleted or inserted.-
32*/-
33-
34#include "sqliteInt.h" /* Requires access to internal data structures */-
35#if (defined(SQLITE_ENABLE_DBPAGE_VTAB) || defined(SQLITE_TEST)) \-
36 && !defined(SQLITE_OMIT_VIRTUALTABLE)-
37-
38typedef struct DbpageTable DbpageTable;-
39typedef struct DbpageCursor DbpageCursor;-
40-
41struct DbpageCursor {-
42 sqlite3_vtab_cursor base; /* Base class. Must be first */-
43 int pgno; /* Current page number */-
44 int mxPgno; /* Last page to visit on this scan */-
45 Pager *pPager; /* Pager being read/written */-
46 DbPage *pPage1; /* Page 1 of the database */-
47 int iDb; /* Index of database to analyze */-
48 int szPage; /* Size of each page in bytes */-
49};-
50-
51struct DbpageTable {-
52 sqlite3_vtab base; /* Base class. Must be first */-
53 sqlite3 *db; /* The database */-
54};-
55-
56/* Columns */-
57#define DBPAGE_COLUMN_PGNO 0-
58#define DBPAGE_COLUMN_DATA 1-
59#define DBPAGE_COLUMN_SCHEMA 2-
60-
61-
62-
63/*-
64** Connect to or create a dbpagevfs virtual table.-
65*/-
66static int dbpageConnect(-
67 sqlite3 *db,-
68 void *pAux,-
69 int argc, const char *const*argv,-
70 sqlite3_vtab **ppVtab,-
71 char **pzErr-
72){-
73 DbpageTable *pTab = 0;-
74 int rc = SQLITE_OK;-
75-
76 rc = sqlite3_declare_vtab(db, -
77 "CREATE TABLE x(pgno INTEGER PRIMARY KEY, data BLOB, schema HIDDEN)");-
78 if( rc==SQLITE_OK ){
rc==0Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-5
79 pTab = (DbpageTable *)sqlite3_malloc64(sizeof(DbpageTable));-
80 if( pTab==0 ) rc = SQLITE_NOMEM_BKPT;
never executed: rc = 7;
pTab==0Description
TRUEnever evaluated
FALSEevaluated 5 times by 1 test
Evaluated by:
  • Self test (438)
0-5
81 }
executed 5 times by 1 test: end of block
Executed by:
  • Self test (438)
5
82-
83 assert( rc==SQLITE_OK || pTab==0 );-
84 if( rc==SQLITE_OK ){
rc==0Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-5
85 memset(pTab, 0, sizeof(DbpageTable));-
86 pTab->db = db;-
87 }
executed 5 times by 1 test: end of block
Executed by:
  • Self test (438)
5
88-
89 *ppVtab = (sqlite3_vtab*)pTab;-
90 return rc;
executed 5 times by 1 test: return rc;
Executed by:
  • Self test (438)
5
91}-
92-
93/*-
94** Disconnect from or destroy a dbpagevfs virtual table.-
95*/-
96static int dbpageDisconnect(sqlite3_vtab *pVtab){-
97 sqlite3_free(pVtab);-
98 return SQLITE_OK;
executed 5 times by 1 test: return 0;
Executed by:
  • Self test (438)
5
99}-
100-
101/*-
102** idxNum:-
103**-
104** 0 schema=main, full table scan-
105** 1 schema=main, pgno=?1-
106** 2 schema=?1, full table scan-
107** 3 schema=?1, pgno=?2-
108*/-
109static int dbpageBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){-
110 int i;-
111 int iPlan = 0;-
112-
113 /* If there is a schema= constraint, it must be honored. Report a-
114 ** ridiculously large estimated cost if the schema= constraint is-
115 ** unavailable-
116 */-
117 for(i=0; i<pIdxInfo->nConstraint; i++){
i<pIdxInfo->nConstraintDescription
TRUEevaluated 21 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 11 times by 1 test
Evaluated by:
  • Self test (438)
11-21
118 struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[i];-
119 if( p->iColumn!=DBPAGE_COLUMN_SCHEMA ) continue;
executed 13 times by 1 test: continue;
Executed by:
  • Self test (438)
p->iColumn!=2Description
TRUEevaluated 13 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
8-13
120 if( p->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue;
never executed: continue;
p->op!=2Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
121 if( !p->usable ){
!p->usableDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 7 times by 1 test
Evaluated by:
  • Self test (438)
1-7
122 /* No solution. Use the default SQLITE_BIG_DBL cost */-
123 pIdxInfo->estimatedRows = 0x7fffffff;-
124 return SQLITE_OK;
executed 1 time by 1 test: return 0;
Executed by:
  • Self test (438)
1
125 }-
126 iPlan = 2;-
127 pIdxInfo->aConstraintUsage[i].argvIndex = 1;-
128 pIdxInfo->aConstraintUsage[i].omit = 1;-
129 break;
executed 7 times by 1 test: break;
Executed by:
  • Self test (438)
7
130 }-
131-
132 /* If we reach this point, it means that either there is no schema=-
133 ** constraint (in which case we use the "main" schema) or else the-
134 ** schema constraint was accepted. Lower the estimated cost accordingly-
135 */-
136 pIdxInfo->estimatedCost = 1.0e6;-
137-
138 /* Check for constraints against pgno */-
139 for(i=0; i<pIdxInfo->nConstraint; i++){
i<pIdxInfo->nConstraintDescription
TRUEevaluated 20 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 3 times by 1 test
Evaluated by:
  • Self test (438)
3-20
140 struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[i];-
141 if( p->usable && p->iColumn<=0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){
p->usableDescription
TRUEevaluated 20 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
p->iColumn<=0Description
TRUEevaluated 15 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 5 times by 1 test
Evaluated by:
  • Self test (438)
p->op==2Description
TRUEevaluated 15 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-20
142 pIdxInfo->estimatedRows = 1;-
143 pIdxInfo->idxFlags = SQLITE_INDEX_SCAN_UNIQUE;-
144 pIdxInfo->estimatedCost = 1.0;-
145 pIdxInfo->aConstraintUsage[i].argvIndex = iPlan ? 2 : 1;
iPlanDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 11 times by 1 test
Evaluated by:
  • Self test (438)
4-11
146 pIdxInfo->aConstraintUsage[i].omit = 1;-
147 iPlan |= 1;-
148 break;
executed 15 times by 1 test: break;
Executed by:
  • Self test (438)
15
149 }-
150 }
executed 5 times by 1 test: end of block
Executed by:
  • Self test (438)
5
151 pIdxInfo->idxNum = iPlan;-
152-
153 if( pIdxInfo->nOrderBy>=1
pIdxInfo->nOrderBy>=1Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 16 times by 1 test
Evaluated by:
  • Self test (438)
2-16
154 && pIdxInfo->aOrderBy[0].iColumn<=0
pIdxInfo->aOrd...[0].iColumn<=0Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-2
155 && pIdxInfo->aOrderBy[0].desc==0
pIdxInfo->aOrderBy[0].desc==0Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-2
156 ){-
157 pIdxInfo->orderByConsumed = 1;-
158 }
executed 2 times by 1 test: end of block
Executed by:
  • Self test (438)
2
159 return SQLITE_OK;
executed 18 times by 1 test: return 0;
Executed by:
  • Self test (438)
18
160}-
161-
162/*-
163** Open a new dbpagevfs cursor.-
164*/-
165static int dbpageOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){-
166 DbpageCursor *pCsr;-
167-
168 pCsr = (DbpageCursor *)sqlite3_malloc64(sizeof(DbpageCursor));-
169 if( pCsr==0 ){
pCsr==0Description
TRUEnever evaluated
FALSEevaluated 18 times by 1 test
Evaluated by:
  • Self test (438)
0-18
170 return SQLITE_NOMEM_BKPT;
never executed: return 7;
0
171 }else{-
172 memset(pCsr, 0, sizeof(DbpageCursor));-
173 pCsr->base.pVtab = pVTab;-
174 pCsr->pgno = -1;-
175 }
executed 18 times by 1 test: end of block
Executed by:
  • Self test (438)
18
176-
177 *ppCursor = (sqlite3_vtab_cursor *)pCsr;-
178 return SQLITE_OK;
executed 18 times by 1 test: return 0;
Executed by:
  • Self test (438)
18
179}-
180-
181/*-
182** Close a dbpagevfs cursor.-
183*/-
184static int dbpageClose(sqlite3_vtab_cursor *pCursor){-
185 DbpageCursor *pCsr = (DbpageCursor *)pCursor;-
186 if( pCsr->pPage1 ) sqlite3PagerUnrefPageOne(pCsr->pPage1);
executed 18 times by 1 test: sqlite3PagerUnrefPageOne(pCsr->pPage1);
Executed by:
  • Self test (438)
pCsr->pPage1Description
TRUEevaluated 18 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-18
187 sqlite3_free(pCsr);-
188 return SQLITE_OK;
executed 18 times by 1 test: return 0;
Executed by:
  • Self test (438)
18
189}-
190-
191/*-
192** Move a dbpagevfs cursor to the next entry in the file.-
193*/-
194static int dbpageNext(sqlite3_vtab_cursor *pCursor){-
195 int rc = SQLITE_OK;-
196 DbpageCursor *pCsr = (DbpageCursor *)pCursor;-
197 pCsr->pgno++;-
198 return rc;
executed 16 times by 1 test: return rc;
Executed by:
  • Self test (438)
16
199}-
200-
201static int dbpageEof(sqlite3_vtab_cursor *pCursor){-
202 DbpageCursor *pCsr = (DbpageCursor *)pCursor;-
203 return pCsr->pgno > pCsr->mxPgno;
executed 35 times by 1 test: return pCsr->pgno > pCsr->mxPgno;
Executed by:
  • Self test (438)
35
204}-
205-
206/*-
207** idxNum:-
208**-
209** 0 schema=main, full table scan-
210** 1 schema=main, pgno=?1-
211** 2 schema=?1, full table scan-
212** 3 schema=?1, pgno=?2-
213**-
214** idxStr is not used-
215*/-
216static int dbpageFilter(-
217 sqlite3_vtab_cursor *pCursor, -
218 int idxNum, const char *idxStr,-
219 int argc, sqlite3_value **argv-
220){-
221 DbpageCursor *pCsr = (DbpageCursor *)pCursor;-
222 DbpageTable *pTab = (DbpageTable *)pCursor->pVtab;-
223 int rc;-
224 sqlite3 *db = pTab->db;-
225 Btree *pBt;-
226-
227 /* Default setting is no rows of result */-
228 pCsr->pgno = 1; -
229 pCsr->mxPgno = 0;-
230-
231 if( idxNum & 2 ){
idxNum & 2Description
TRUEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 11 times by 1 test
Evaluated by:
  • Self test (438)
8-11
232 const char *zSchema;-
233 assert( argc>=1 );-
234 zSchema = (const char*)sqlite3_value_text(argv[0]);-
235 pCsr->iDb = sqlite3FindDbName(db, zSchema);-
236 if( pCsr->iDb<0 ) return SQLITE_OK;
never executed: return 0;
pCsr->iDb<0Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
237 }else{
executed 8 times by 1 test: end of block
Executed by:
  • Self test (438)
8
238 pCsr->iDb = 0;-
239 }
executed 11 times by 1 test: end of block
Executed by:
  • Self test (438)
11
240 pBt = db->aDb[pCsr->iDb].pBt;-
241 if( pBt==0 ) return SQLITE_OK;
never executed: return 0;
pBt==0Description
TRUEnever evaluated
FALSEevaluated 19 times by 1 test
Evaluated by:
  • Self test (438)
0-19
242 pCsr->pPager = sqlite3BtreePager(pBt);-
243 pCsr->szPage = sqlite3BtreeGetPageSize(pBt);-
244 pCsr->mxPgno = sqlite3BtreeLastPage(pBt);-
245 if( idxNum & 1 ){
idxNum & 1Description
TRUEevaluated 16 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 3 times by 1 test
Evaluated by:
  • Self test (438)
3-16
246 assert( argc>(idxNum>>1) );-
247 pCsr->pgno = sqlite3_value_int(argv[idxNum>>1]);-
248 if( pCsr->pgno<1 || pCsr->pgno>pCsr->mxPgno ){
pCsr->pgno<1Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 15 times by 1 test
Evaluated by:
  • Self test (438)
pCsr->pgno>pCsr->mxPgnoDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 14 times by 1 test
Evaluated by:
  • Self test (438)
1-15
249 pCsr->pgno = 1;-
250 pCsr->mxPgno = 0;-
251 }else{
executed 2 times by 1 test: end of block
Executed by:
  • Self test (438)
2
252 pCsr->mxPgno = pCsr->pgno;-
253 }
executed 14 times by 1 test: end of block
Executed by:
  • Self test (438)
14
254 }else{-
255 assert( pCsr->pgno==1 );-
256 }
executed 3 times by 1 test: end of block
Executed by:
  • Self test (438)
3
257 if( pCsr->pPage1 ) sqlite3PagerUnrefPageOne(pCsr->pPage1);
executed 1 time by 1 test: sqlite3PagerUnrefPageOne(pCsr->pPage1);
Executed by:
  • Self test (438)
pCsr->pPage1Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 18 times by 1 test
Evaluated by:
  • Self test (438)
1-18
258 rc = sqlite3PagerGet(pCsr->pPager, 1, &pCsr->pPage1, 0);-
259 return rc;
executed 19 times by 1 test: return rc;
Executed by:
  • Self test (438)
19
260}-
261-
262static int dbpageColumn(-
263 sqlite3_vtab_cursor *pCursor, -
264 sqlite3_context *ctx, -
265 int i-
266){-
267 DbpageCursor *pCsr = (DbpageCursor *)pCursor;-
268 int rc = SQLITE_OK;-
269 switch( i ){-
270 case 0: { /* pgno */
executed 22 times by 1 test: case 0:
Executed by:
  • Self test (438)
22
271 sqlite3_result_int(ctx, pCsr->pgno);-
272 break;
executed 22 times by 1 test: break;
Executed by:
  • Self test (438)
22
273 }-
274 case 1: { /* data */
executed 16 times by 1 test: case 1:
Executed by:
  • Self test (438)
16
275 DbPage *pDbPage = 0;-
276 rc = sqlite3PagerGet(pCsr->pPager, pCsr->pgno, (DbPage**)&pDbPage, 0);-
277 if( rc==SQLITE_OK ){
rc==0Description
TRUEevaluated 16 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-16
278 sqlite3_result_blob(ctx, sqlite3PagerGetData(pDbPage), pCsr->szPage,-
279 SQLITE_TRANSIENT);-
280 }
executed 16 times by 1 test: end of block
Executed by:
  • Self test (438)
16
281 sqlite3PagerUnref(pDbPage);-
282 break;
executed 16 times by 1 test: break;
Executed by:
  • Self test (438)
16
283 }-
284 default: { /* schema */
executed 10 times by 1 test: default:
Executed by:
  • Self test (438)
10
285 sqlite3 *db = sqlite3_context_db_handle(ctx);-
286 sqlite3_result_text(ctx, db->aDb[pCsr->iDb].zDbSName, -1, SQLITE_STATIC);-
287 break;
executed 10 times by 1 test: break;
Executed by:
  • Self test (438)
10
288 }-
289 }-
290 return SQLITE_OK;
executed 48 times by 1 test: return 0;
Executed by:
  • Self test (438)
48
291}-
292-
293static int dbpageRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){-
294 DbpageCursor *pCsr = (DbpageCursor *)pCursor;-
295 *pRowid = pCsr->pgno;-
296 return SQLITE_OK;
executed 16 times by 1 test: return 0;
Executed by:
  • Self test (438)
16
297}-
298-
299static int dbpageUpdate(-
300 sqlite3_vtab *pVtab,-
301 int argc,-
302 sqlite3_value **argv,-
303 sqlite_int64 *pRowid-
304){-
305 DbpageTable *pTab = (DbpageTable *)pVtab;-
306 Pgno pgno;-
307 DbPage *pDbPage = 0;-
308 int rc = SQLITE_OK;-
309 char *zErr = 0;-
310 const char *zSchema;-
311 int iDb;-
312 Btree *pBt;-
313 Pager *pPager;-
314 int szPage;-
315-
316 if( argc==1 ){
argc==1Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
317 zErr = "cannot delete";-
318 goto update_fail;
never executed: goto update_fail;
0
319 }-
320 pgno = sqlite3_value_int(argv[0]);-
321 if( (Pgno)sqlite3_value_int(argv[1])!=pgno ){
(Pgno)sqlite3_...argv[1])!=pgnoDescription
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
322 zErr = "cannot insert";-
323 goto update_fail;
never executed: goto update_fail;
0
324 }-
325 zSchema = (const char*)sqlite3_value_text(argv[4]);-
326 iDb = zSchema ? sqlite3FindDbName(pTab->db, zSchema) : -1;
zSchemaDescription
TRUEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-8
327 if( iDb<0 ){
iDb<0Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
328 zErr = "no such schema";-
329 goto update_fail;
never executed: goto update_fail;
0
330 }-
331 pBt = pTab->db->aDb[iDb].pBt;-
332 if( pgno<1 || pBt==0 || pgno>(int)sqlite3BtreeLastPage(pBt) ){
pgno<1Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
pBt==0Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
pgno>(int)sqli...eLastPage(pBt)Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
333 zErr = "bad page number";-
334 goto update_fail;
never executed: goto update_fail;
0
335 }-
336 szPage = sqlite3BtreeGetPageSize(pBt);-
337 if( sqlite3_value_type(argv[3])!=SQLITE_BLOB
sqlite3_value_type(argv[3])!=4Description
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
338 || sqlite3_value_bytes(argv[3])!=szPage
sqlite3_value_...gv[3])!=szPageDescription
TRUEnever evaluated
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
0-8
339 ){-
340 zErr = "bad page value";-
341 goto update_fail;
never executed: goto update_fail;
0
342 }-
343 pPager = sqlite3BtreePager(pBt);-
344 rc = sqlite3PagerGet(pPager, pgno, (DbPage**)&pDbPage, 0);-
345 if( rc==SQLITE_OK ){
rc==0Description
TRUEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-8
346 rc = sqlite3PagerWrite(pDbPage);-
347 if( rc==SQLITE_OK ){
rc==0Description
TRUEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
FALSEnever evaluated
0-8
348 memcpy(sqlite3PagerGetData(pDbPage),-
349 sqlite3_value_blob(argv[3]),-
350 szPage);-
351 }
executed 8 times by 1 test: end of block
Executed by:
  • Self test (438)
8
352 }
executed 8 times by 1 test: end of block
Executed by:
  • Self test (438)
8
353 sqlite3PagerUnref(pDbPage);-
354 return rc;
executed 8 times by 1 test: return rc;
Executed by:
  • Self test (438)
8
355-
356update_fail:-
357 sqlite3_free(pVtab->zErrMsg);-
358 pVtab->zErrMsg = sqlite3_mprintf("%s", zErr);-
359 return SQLITE_ERROR;
never executed: return 1;
0
360}-
361-
362/* Since we do not know in advance which database files will be-
363** written by the sqlite_dbpage virtual table, start a write transaction-
364** on them all.-
365*/-
366static int dbpageBegin(sqlite3_vtab *pVtab){-
367 DbpageTable *pTab = (DbpageTable *)pVtab;-
368 sqlite3 *db = pTab->db;-
369 int i;-
370 for(i=0; i<db->nDb; i++){
i<db->nDbDescription
TRUEevaluated 20 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 8 times by 1 test
Evaluated by:
  • Self test (438)
8-20
371 Btree *pBt = db->aDb[i].pBt;-
372 if( pBt ) sqlite3BtreeBeginTrans(pBt, 1, 0);
executed 19 times by 1 test: sqlite3BtreeBeginTrans(pBt, 1, 0);
Executed by:
  • Self test (438)
pBtDescription
TRUEevaluated 19 times by 1 test
Evaluated by:
  • Self test (438)
FALSEevaluated 1 time by 1 test
Evaluated by:
  • Self test (438)
1-19
373 }
executed 20 times by 1 test: end of block
Executed by:
  • Self test (438)
20
374 return SQLITE_OK;
executed 8 times by 1 test: return 0;
Executed by:
  • Self test (438)
8
375}-
376-
377-
378/*-
379** Invoke this routine to register the "dbpage" virtual table module-
380*/-
381int sqlite3DbpageRegister(sqlite3 *db){-
382 static sqlite3_module dbpage_module = {-
383 0, /* iVersion */-
384 dbpageConnect, /* xCreate */-
385 dbpageConnect, /* xConnect */-
386 dbpageBestIndex, /* xBestIndex */-
387 dbpageDisconnect, /* xDisconnect */-
388 dbpageDisconnect, /* xDestroy */-
389 dbpageOpen, /* xOpen - open a cursor */-
390 dbpageClose, /* xClose - close a cursor */-
391 dbpageFilter, /* xFilter - configure scan constraints */-
392 dbpageNext, /* xNext - advance a cursor */-
393 dbpageEof, /* xEof - check for end of scan */-
394 dbpageColumn, /* xColumn - read data */-
395 dbpageRowid, /* xRowid - read data */-
396 dbpageUpdate, /* xUpdate */-
397 dbpageBegin, /* xBegin */-
398 0, /* xSync */-
399 0, /* xCommit */-
400 0, /* xRollback */-
401 0, /* xFindMethod */-
402 0, /* xRename */-
403 0, /* xSavepoint */-
404 0, /* xRelease */-
405 0, /* xRollbackTo */-
406 };-
407 return sqlite3_create_module(db, "sqlite_dbpage", &dbpage_module, 0);
executed 31552 times by 438 tests: return sqlite3_create_module(db, "sqlite_dbpage", &dbpage_module, 0);
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408}-
409#elif defined(SQLITE_ENABLE_DBPAGE_VTAB)-
410int sqlite3DbpageRegister(sqlite3 *db){ return SQLITE_OK; }-
411#endif /* SQLITE_ENABLE_DBSTAT_VTAB */-
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