/* Perform a full-text query; return a list of documents in [pResult]. */
static int fulltext_query(fulltext_vtab *v, const char *zQuery,
DocList **pResult){
Query q;
int phrase_start = -1;
int i;
sqlite3_stmt *pSelect = NULL;
DocList *d = NULL;
int rc = parse_query(v, zQuery, &q);
if( rc!=SQLITE_OK ) return rc;
/* Merge terms. */
for(i = 0 ; i < q.nTerms ; ++i){
/* In each merge step, we need to generate positions whenever we're
* processing a phrase which hasn't ended yet. */
int need_positions = i<q.nTerms-1 && !q.pTerm[i+1].is_phrase;
DocList *next = docListNew(need_positions ? DL_POSITIONS : DL_DOCIDS);
if( q.pTerm[i].is_phrase ){
phrase_start = i;
}
rc = query_merge(v, &pSelect, q.pTerm[i].zTerm, d, i - phrase_start, next);
if( rc!=SQLITE_OK ) break;
if( d!=NULL ){
docListDelete(d);
}
d = next;
}
sqlite3_finalize(pSelect);
query_free(&q);
*pResult = d;
return rc;
}
static int fulltext_query(fulltext_vtab *v, const char *zQuery,
DocList **pResult){
Query q;
int phrase_start = -1;
int i;
sqlite3_stmt *pSelect = NULL;
DocList *d = NULL;
int rc = parse_query(v, zQuery, &q);
if( rc!=SQLITE_OK ) return rc;
for(i = 0 ; i < q.nTerms ; ++i){
int need_positions = i<q.nTerms-1 && !q.pTerm[i+1].is_phrase;
DocList *next = docListNew(need_positions ? DL_POSITIONS : DL_DOCIDS);
if( q.pTerm[i].is_phrase ){
phrase_start = i;
}
rc = query_merge(v, &pSelect, q.pTerm[i].zTerm, d, i - phrase_start, next);
if( rc!=SQLITE_OK ) break;
if( d!=NULL ){
docListDelete(d);
}
d = next;
}
sqlite3_finalize(pSelect);
query_free(&q);
*pResult = d;
return rc;
}
