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Overview
| Comment: | Add a TRACE macro to the FTS1 module for troubleshooting. Turned off by default. (CVS 3388) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
d4923e98c66ae03d899f633e5e309471 |
| User & Date: | drh 2006-09-02 20:58:26 |
Context
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2006-09-02
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| 22:14 | Changes to the Makefile.in so that MinGW users can build a DLL. Ticket #1955. (CVS 3389) check-in: 7279ddd0 user: drh tags: trunk | |
| 20:58 | Add a TRACE macro to the FTS1 module for troubleshooting. Turned off by default. (CVS 3388) check-in: d4923e98 user: drh tags: trunk | |
| 20:57 | Do not call the xDisconnect method on a virtual table while xUpdate is pending. Instead, defer the xDisconnect until after xUpdate completes. (CVS 3387) check-in: 61148f4c user: drh tags: trunk | |
Changes
Changes to ext/fts1/fts1.c.
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#include "fts1.h" #include "fts1_hash.h" #include "fts1_tokenizer.h" #include "sqlite3.h" #include "sqlite3ext.h" SQLITE_EXTENSION_INIT1 /* utility functions */ /* We encode variable-length integers in little-endian order using seven bits * per byte as follows: ** ** KEY: ** A = 0xxxxxxx 7 bits of data and one flag bit ................................................................................ *r++ = '\0'; assert( r == result + len ); return result; } static int sql_exec(sqlite3 *db, const char *zName, const char *zFormat){ char *zCommand = string_format(zFormat, zName); int rc = sqlite3_exec(db, zCommand, NULL, 0, NULL); free(zCommand); return rc; } static int sql_prepare(sqlite3 *db, const char *zName, sqlite3_stmt **ppStmt, const char *zFormat){ char *zCommand = string_format(zFormat, zName); int rc = sqlite3_prepare(db, zCommand, -1, ppStmt, NULL); free(zCommand); return rc; } /* end utility functions */ ................................................................................ return sql_single_step_statement(v, TERM_DELETE_STMT, &s); } static void fulltext_vtab_destroy(fulltext_vtab *v){ int iStmt; for( iStmt=0; iStmt<MAX_STMT; iStmt++ ){ if( v->pFulltextStatements[iStmt]!=NULL ){ sqlite3_finalize(v->pFulltextStatements[iStmt]); v->pFulltextStatements[iStmt] = NULL; } } ................................................................................ rc = sqlite3_declare_vtab(db, "create table x(content text)"); if( rc!=SQLITE_OK ) return rc; memset(v->pFulltextStatements, 0, sizeof(v->pFulltextStatements)); *ppVTab = &v->base; return SQLITE_OK; } static int fulltextCreate(sqlite3 *db, void *pAux, int argc, char **argv, sqlite3_vtab **ppVTab){ int rc; assert( argc>=3 ); /* The %_content table holds the text of each full-text item, with ** the rowid used as the docid. ** ** The %_term table maps each term to a document list blob ** containing elements sorted by ascending docid, each element ** encoded as: ................................................................................ pInfo->aConstraintUsage[i].omit = 1; pInfo->idxNum = QUERY_FULLTEXT; pInfo->estimatedCost = 1.0; /* an arbitrary value for now */ return SQLITE_OK; } } pInfo->idxNum = QUERY_GENERIC; return SQLITE_OK; } static int fulltextDisconnect(sqlite3_vtab *pVTab){ fulltext_vtab_destroy((fulltext_vtab *)pVTab); return SQLITE_OK; } static int fulltextDestroy(sqlite3_vtab *pVTab){ fulltext_vtab *v = (fulltext_vtab *)pVTab; int rc = sql_exec(v->db, v->zName, "drop table %_content; drop table %_term"); if( rc!=SQLITE_OK ) return rc; fulltext_vtab_destroy((fulltext_vtab *)pVTab); return SQLITE_OK; } ................................................................................ static int fulltextOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ fulltext_cursor *c; c = (fulltext_cursor *) calloc(sizeof(fulltext_cursor), 1); /* sqlite will initialize c->base */ *ppCursor = &c->base; return SQLITE_OK; } static int fulltextClose(sqlite3_vtab_cursor *pCursor){ fulltext_cursor *c = (fulltext_cursor *) pCursor; sqlite3_finalize(c->pStmt); if( c->result.pDoclist!=NULL ){ docListDelete(c->result.pDoclist); } free(c); return SQLITE_OK; } static int fulltextNext(sqlite3_vtab_cursor *pCursor){ fulltext_cursor *c = (fulltext_cursor *) pCursor; sqlite_int64 iDocid; int rc; switch( c->iCursorType ){ case QUERY_GENERIC: /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ rc = sqlite3_step(c->pStmt); switch( rc ){ case SQLITE_ROW: c->eof = 0; ................................................................................ int idxNum, const char *idxStr, int argc, sqlite3_value **argv){ fulltext_cursor *c = (fulltext_cursor *) pCursor; fulltext_vtab *v = cursor_vtab(c); int rc; const char *zStatement; c->iCursorType = idxNum; switch( idxNum ){ case QUERY_GENERIC: zStatement = "select rowid, content from %_content"; break; case QUERY_FULLTEXT: /* full-text search */ ................................................................................ return content_delete(v, iRow); } static int fulltextUpdate(sqlite3_vtab *pVtab, int nArg, sqlite3_value **ppArg, sqlite_int64 *pRowid){ fulltext_vtab *v = (fulltext_vtab *) pVtab; if( nArg<2 ){ return index_delete(v, sqlite3_value_int64(ppArg[0])); } if( sqlite3_value_type(ppArg[0]) != SQLITE_NULL ){ return SQLITE_ERROR; /* an update; not yet supported */ } |
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#include "fts1.h" #include "fts1_hash.h" #include "fts1_tokenizer.h" #include "sqlite3.h" #include "sqlite3ext.h" SQLITE_EXTENSION_INIT1 #if 0 # define TRACE(A) printf A; fflush(stdout) #else # define TRACE(A) #endif /* utility functions */ /* We encode variable-length integers in little-endian order using seven bits * per byte as follows: ** ** KEY: ** A = 0xxxxxxx 7 bits of data and one flag bit ................................................................................ *r++ = '\0'; assert( r == result + len ); return result; } static int sql_exec(sqlite3 *db, const char *zName, const char *zFormat){ char *zCommand = string_format(zFormat, zName); TRACE(("FTS1 sql: %s\n", zCommand)); int rc = sqlite3_exec(db, zCommand, NULL, 0, NULL); free(zCommand); return rc; } static int sql_prepare(sqlite3 *db, const char *zName, sqlite3_stmt **ppStmt, const char *zFormat){ char *zCommand = string_format(zFormat, zName); TRACE(("FTS1 prepare: %s\n", zCommand)); int rc = sqlite3_prepare(db, zCommand, -1, ppStmt, NULL); free(zCommand); return rc; } /* end utility functions */ ................................................................................ return sql_single_step_statement(v, TERM_DELETE_STMT, &s); } static void fulltext_vtab_destroy(fulltext_vtab *v){ int iStmt; TRACE(("FTS1 Destroy %p\n", v)); for( iStmt=0; iStmt<MAX_STMT; iStmt++ ){ if( v->pFulltextStatements[iStmt]!=NULL ){ sqlite3_finalize(v->pFulltextStatements[iStmt]); v->pFulltextStatements[iStmt] = NULL; } } ................................................................................ rc = sqlite3_declare_vtab(db, "create table x(content text)"); if( rc!=SQLITE_OK ) return rc; memset(v->pFulltextStatements, 0, sizeof(v->pFulltextStatements)); *ppVTab = &v->base; TRACE(("FTS1 Connect %p\n", v)); return SQLITE_OK; } static int fulltextCreate(sqlite3 *db, void *pAux, int argc, char **argv, sqlite3_vtab **ppVTab){ int rc; assert( argc>=3 ); TRACE(("FTS1 Create\n")); /* The %_content table holds the text of each full-text item, with ** the rowid used as the docid. ** ** The %_term table maps each term to a document list blob ** containing elements sorted by ascending docid, each element ** encoded as: ................................................................................ pInfo->aConstraintUsage[i].omit = 1; pInfo->idxNum = QUERY_FULLTEXT; pInfo->estimatedCost = 1.0; /* an arbitrary value for now */ return SQLITE_OK; } } pInfo->idxNum = QUERY_GENERIC; TRACE(("FTS1 BestIndex\n")); return SQLITE_OK; } static int fulltextDisconnect(sqlite3_vtab *pVTab){ TRACE(("FTS1 Disconnect %p\n", pVTab)); fulltext_vtab_destroy((fulltext_vtab *)pVTab); return SQLITE_OK; } static int fulltextDestroy(sqlite3_vtab *pVTab){ fulltext_vtab *v = (fulltext_vtab *)pVTab; TRACE(("FTS1 Destroy %p\n", pVTab)); int rc = sql_exec(v->db, v->zName, "drop table %_content; drop table %_term"); if( rc!=SQLITE_OK ) return rc; fulltext_vtab_destroy((fulltext_vtab *)pVTab); return SQLITE_OK; } ................................................................................ static int fulltextOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ fulltext_cursor *c; c = (fulltext_cursor *) calloc(sizeof(fulltext_cursor), 1); /* sqlite will initialize c->base */ *ppCursor = &c->base; TRACE(("FTS1 Open %p: %p\n", pVTab, c)); return SQLITE_OK; } static int fulltextClose(sqlite3_vtab_cursor *pCursor){ fulltext_cursor *c = (fulltext_cursor *) pCursor; TRACE(("FTS1 Close %p\n", c)); sqlite3_finalize(c->pStmt); if( c->result.pDoclist!=NULL ){ docListDelete(c->result.pDoclist); } free(c); return SQLITE_OK; } static int fulltextNext(sqlite3_vtab_cursor *pCursor){ fulltext_cursor *c = (fulltext_cursor *) pCursor; sqlite_int64 iDocid; int rc; TRACE(("FTS1 Next %p\n", pCursor)); switch( c->iCursorType ){ case QUERY_GENERIC: /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ rc = sqlite3_step(c->pStmt); switch( rc ){ case SQLITE_ROW: c->eof = 0; ................................................................................ int idxNum, const char *idxStr, int argc, sqlite3_value **argv){ fulltext_cursor *c = (fulltext_cursor *) pCursor; fulltext_vtab *v = cursor_vtab(c); int rc; const char *zStatement; TRACE(("FTS1 Filter %p\n",pCursor)); c->iCursorType = idxNum; switch( idxNum ){ case QUERY_GENERIC: zStatement = "select rowid, content from %_content"; break; case QUERY_FULLTEXT: /* full-text search */ ................................................................................ return content_delete(v, iRow); } static int fulltextUpdate(sqlite3_vtab *pVtab, int nArg, sqlite3_value **ppArg, sqlite_int64 *pRowid){ fulltext_vtab *v = (fulltext_vtab *) pVtab; TRACE(("FTS1 Update %p\n", pVtab)); if( nArg<2 ){ return index_delete(v, sqlite3_value_int64(ppArg[0])); } if( sqlite3_value_type(ppArg[0]) != SQLITE_NULL ){ return SQLITE_ERROR; /* an update; not yet supported */ } |