diff options
Diffstat (limited to 'src/vtab.c')
-rw-r--r-- | src/vtab.c | 82 |
1 files changed, 41 insertions, 41 deletions
diff --git a/src/vtab.c b/src/vtab.c index 25672bcce..c66a15467 100644 --- a/src/vtab.c +++ b/src/vtab.c @@ -192,7 +192,7 @@ void sqlite3VtabLock(VTable *pVTab){ VTable *sqlite3GetVTable(sqlite3 *db, Table *pTab){ VTable *pVtab; assert( IsVirtual(pTab) ); - for(pVtab=pTab->pVTable; pVtab && pVtab->db!=db; pVtab=pVtab->pNext); + for(pVtab=pTab->u.vtab.p; pVtab && pVtab->db!=db; pVtab=pVtab->pNext); return pVtab; } @@ -220,21 +220,21 @@ void sqlite3VtabUnlock(VTable *pVTab){ /* ** Table p is a virtual table. This function moves all elements in the -** p->pVTable list to the sqlite3.pDisconnect lists of their associated +** p->u.vtab.p list to the sqlite3.pDisconnect lists of their associated ** database connections to be disconnected at the next opportunity. ** Except, if argument db is not NULL, then the entry associated with -** connection db is left in the p->pVTable list. +** connection db is left in the p->u.vtab.p list. */ static VTable *vtabDisconnectAll(sqlite3 *db, Table *p){ VTable *pRet = 0; - VTable *pVTable = p->pVTable; - p->pVTable = 0; + VTable *pVTable = p->u.vtab.p; + p->u.vtab.p = 0; /* Assert that the mutex (if any) associated with the BtShared database ** that contains table p is held by the caller. See header comments ** above function sqlite3VtabUnlockList() for an explanation of why ** this makes it safe to access the sqlite3.pDisconnect list of any - ** database connection that may have an entry in the p->pVTable list. + ** database connection that may have an entry in the p->u.vtab.p list. */ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, p->pSchema) ); @@ -244,7 +244,7 @@ static VTable *vtabDisconnectAll(sqlite3 *db, Table *p){ assert( db2 ); if( db2==db ){ pRet = pVTable; - p->pVTable = pRet; + p->u.vtab.p = pRet; pRet->pNext = 0; }else{ pVTable->pNext = db2->pDisconnect; @@ -272,7 +272,7 @@ void sqlite3VtabDisconnect(sqlite3 *db, Table *p){ assert( sqlite3BtreeHoldsAllMutexes(db) ); assert( sqlite3_mutex_held(db->mutex) ); - for(ppVTab=&p->pVTable; *ppVTab; ppVTab=&(*ppVTab)->pNext){ + for(ppVTab=&p->u.vtab.p; *ppVTab; ppVTab=&(*ppVTab)->pNext){ if( (*ppVTab)->db==db ){ VTable *pVTab = *ppVTab; *ppVTab = pVTab->pNext; @@ -336,36 +336,36 @@ void sqlite3VtabUnlockList(sqlite3 *db){ */ void sqlite3VtabClear(sqlite3 *db, Table *p){ if( !db || db->pnBytesFreed==0 ) vtabDisconnectAll(0, p); - if( p->azModuleArg ){ + if( p->u.vtab.azArg ){ int i; - for(i=0; i<p->nModuleArg; i++){ - if( i!=1 ) sqlite3DbFree(db, p->azModuleArg[i]); + for(i=0; i<p->u.vtab.nArg; i++){ + if( i!=1 ) sqlite3DbFree(db, p->u.vtab.azArg[i]); } - sqlite3DbFree(db, p->azModuleArg); + sqlite3DbFree(db, p->u.vtab.azArg); } } /* -** Add a new module argument to pTable->azModuleArg[]. +** Add a new module argument to pTable->u.vtab.azArg[]. ** The string is not copied - the pointer is stored. The ** string will be freed automatically when the table is ** deleted. */ static void addModuleArgument(Parse *pParse, Table *pTable, char *zArg){ - sqlite3_int64 nBytes = sizeof(char *)*(2+pTable->nModuleArg); + sqlite3_int64 nBytes = sizeof(char *)*(2+pTable->u.vtab.nArg); char **azModuleArg; sqlite3 *db = pParse->db; - if( pTable->nModuleArg+3>=db->aLimit[SQLITE_LIMIT_COLUMN] ){ + if( pTable->u.vtab.nArg+3>=db->aLimit[SQLITE_LIMIT_COLUMN] ){ sqlite3ErrorMsg(pParse, "too many columns on %s", pTable->zName); } - azModuleArg = sqlite3DbRealloc(db, pTable->azModuleArg, nBytes); + azModuleArg = sqlite3DbRealloc(db, pTable->u.vtab.azArg, nBytes); if( azModuleArg==0 ){ sqlite3DbFree(db, zArg); }else{ - int i = pTable->nModuleArg++; + int i = pTable->u.vtab.nArg++; azModuleArg[i] = zArg; azModuleArg[i+1] = 0; - pTable->azModuleArg = azModuleArg; + pTable->u.vtab.azArg = azModuleArg; } } @@ -388,10 +388,11 @@ void sqlite3VtabBeginParse( pTable = pParse->pNewTable; if( pTable==0 ) return; assert( 0==pTable->pIndex ); + pTable->eTabType = TABTYP_VTAB; db = pParse->db; - assert( pTable->nModuleArg==0 ); + assert( pTable->u.vtab.nArg==0 ); addModuleArgument(pParse, pTable, sqlite3NameFromToken(db, pModuleName)); addModuleArgument(pParse, pTable, 0); addModuleArgument(pParse, pTable, sqlite3DbStrDup(db, pTable->zName)); @@ -408,11 +409,11 @@ void sqlite3VtabBeginParse( ** sqlite_schema table, has already been made by sqlite3StartTable(). ** The second call, to obtain permission to create the table, is made now. */ - if( pTable->azModuleArg ){ + if( pTable->u.vtab.azArg ){ int iDb = sqlite3SchemaToIndex(db, pTable->pSchema); assert( iDb>=0 ); /* The database the table is being created in */ sqlite3AuthCheck(pParse, SQLITE_CREATE_VTABLE, pTable->zName, - pTable->azModuleArg[0], pParse->db->aDb[iDb].zDbSName); + pTable->u.vtab.azArg[0], pParse->db->aDb[iDb].zDbSName); } #endif } @@ -442,7 +443,7 @@ void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){ if( pTab==0 ) return; addArgumentToVtab(pParse); pParse->sArg.z = 0; - if( pTab->nModuleArg<1 ) return; + if( pTab->u.vtab.nArg<1 ) return; /* If the CREATE VIRTUAL TABLE statement is being entered for the ** first time (in other words if the virtual table is actually being @@ -557,8 +558,8 @@ static int vtabCallConstructor( VtabCtx sCtx; VTable *pVTable; int rc; - const char *const*azArg = (const char *const*)pTab->azModuleArg; - int nArg = pTab->nModuleArg; + const char *const*azArg = (const char *const*)pTab->u.vtab.azArg; + int nArg = pTab->u.vtab.nArg; char *zErr = 0; char *zModuleName; int iDb; @@ -590,7 +591,7 @@ static int vtabCallConstructor( pVTable->eVtabRisk = SQLITE_VTABRISK_Normal; iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - pTab->azModuleArg[1] = db->aDb[iDb].zDbSName; + pTab->u.vtab.azArg[1] = db->aDb[iDb].zDbSName; /* Invoke the virtual table constructor */ assert( &db->pVtabCtx ); @@ -629,12 +630,12 @@ static int vtabCallConstructor( int iCol; u16 oooHidden = 0; /* If everything went according to plan, link the new VTable structure - ** into the linked list headed by pTab->pVTable. Then loop through the + ** into the linked list headed by pTab->u.vtab.p. Then loop through the ** columns of the table to see if any of them contain the token "hidden". ** If so, set the Column COLFLAG_HIDDEN flag and remove the token from ** the type string. */ - pVTable->pNext = pTab->pVTable; - pTab->pVTable = pVTable; + pVTable->pNext = pTab->u.vtab.p; + pTab->u.vtab.p = pVTable; for(iCol=0; iCol<pTab->nCol; iCol++){ char *zType = sqlite3ColumnType(&pTab->aCol[iCol], ""); @@ -692,11 +693,11 @@ int sqlite3VtabCallConnect(Parse *pParse, Table *pTab){ } /* Locate the required virtual table module */ - zMod = pTab->azModuleArg[0]; + zMod = pTab->u.vtab.azArg[0]; pMod = (Module*)sqlite3HashFind(&db->aModule, zMod); if( !pMod ){ - const char *zModule = pTab->azModuleArg[0]; + const char *zModule = pTab->u.vtab.azArg[0]; sqlite3ErrorMsg(pParse, "no such module: %s", zModule); rc = SQLITE_ERROR; }else{ @@ -759,10 +760,10 @@ int sqlite3VtabCallCreate(sqlite3 *db, int iDb, const char *zTab, char **pzErr){ const char *zMod; pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName); - assert( pTab && IsVirtual(pTab) && !pTab->pVTable ); + assert( pTab && IsVirtual(pTab) && !pTab->u.vtab.p ); /* Locate the required virtual table module */ - zMod = pTab->azModuleArg[0]; + zMod = pTab->u.vtab.azArg[0]; pMod = (Module*)sqlite3HashFind(&db->aModule, zMod); /* If the module has been registered and includes a Create method, @@ -822,19 +823,17 @@ int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){ if( SQLITE_OK==sqlite3RunParser(&sParse, zCreateTable, &zErr) && sParse.pNewTable && !db->mallocFailed - && !sParse.pNewTable->pSelect - && !IsVirtual(sParse.pNewTable) + && IsOrdinaryTable(sParse.pNewTable) ){ if( !pTab->aCol ){ Table *pNew = sParse.pNewTable; Index *pIdx; pTab->aCol = pNew->aCol; - pTab->pDfltList = pNew->pDfltList; + sqlite3ExprListDelete(db, pNew->u.tab.pDfltList); pTab->nNVCol = pTab->nCol = pNew->nCol; pTab->tabFlags |= pNew->tabFlags & (TF_WithoutRowid|TF_NoVisibleRowid); pNew->nCol = 0; pNew->aCol = 0; - pNew->pDfltList = 0; assert( pTab->pIndex==0 ); assert( HasRowid(pNew) || sqlite3PrimaryKeyIndex(pNew)!=0 ); if( !HasRowid(pNew) @@ -885,10 +884,10 @@ int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab){ Table *pTab; pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName); - if( pTab!=0 && ALWAYS(pTab->pVTable!=0) ){ + if( pTab!=0 && ALWAYS(pTab->u.vtab.p!=0) ){ VTable *p; int (*xDestroy)(sqlite3_vtab *); - for(p=pTab->pVTable; p; p=p->pNext){ + for(p=pTab->u.vtab.p; p; p=p->pNext){ assert( p->pVtab ); if( p->pVtab->nRef>0 ){ return SQLITE_LOCKED; @@ -902,9 +901,9 @@ int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab){ rc = xDestroy(p->pVtab); /* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */ if( rc==SQLITE_OK ){ - assert( pTab->pVTable==p && p->pNext==0 ); + assert( pTab->u.vtab.p==p && p->pNext==0 ); p->pVtab = 0; - pTab->pVTable = 0; + pTab->u.vtab.p = 0; sqlite3VtabUnlock(p); } sqlite3DeleteTable(db, pTab); @@ -1221,8 +1220,9 @@ int sqlite3VtabEponymousTableInit(Parse *pParse, Module *pMod){ } pMod->pEpoTab = pTab; pTab->nTabRef = 1; + pTab->eTabType = TABTYP_VTAB; pTab->pSchema = db->aDb[0].pSchema; - assert( pTab->nModuleArg==0 ); + assert( pTab->u.vtab.nArg==0 ); pTab->iPKey = -1; pTab->tabFlags |= TF_Eponymous; addModuleArgument(pParse, pTab, sqlite3DbStrDup(db, pTab->zName)); |