Matcher*
PhraseCompiler_make_matcher(PhraseCompiler *self, SegReader *reader,
bool_t need_score)
{
PostingsReader *const post_reader = (PostingsReader*)SegReader_Fetch(
reader, POSTINGSREADER.name);
PhraseQuery *const parent = (PhraseQuery*)self->parent;
VArray *const terms = parent->terms;
u32_t num_terms = VA_Get_Size(terms);
Schema *schema = SegReader_Get_Schema(reader);
Posting *posting = Schema_Fetch_Posting(schema, parent->field);
VArray *plists;
Matcher *retval;
u32_t i;
UNUSED_VAR(need_score);
/* Bail if there are no terms. */
if (!num_terms) return NULL;
/* Bail unless field is valid and posting type supports positions. */
if (posting == NULL || !OBJ_IS_A(posting, SCOREPOSTING)) return NULL;
/* Bail if there's no PostingsReader for this segment. */
if (!post_reader) { return NULL; }
/* Look up each term. */
plists = VA_new(num_terms);
for (i = 0; i < num_terms; i++) {
Obj *term = VA_Fetch(terms, i);
PostingList *plist
= PostReader_Posting_List(post_reader, parent->field, term);
/* Bail if any one of the terms isn't in the index. */
if (!plist || !PList_Get_Doc_Freq(plist)) {
DECREF(plist);
DECREF(plists);
return NULL;
}
VA_Push(plists, (Obj*)plist);
}
retval = (Matcher*)PhraseScorer_new(
Compiler_Get_Similarity(self),
plists,
(Compiler*)self
);
DECREF(plists);
return retval;
}
Matcher*
PhraseCompiler_make_matcher(PhraseCompiler *self, SegReader *reader,
bool_t need_score)
{
UNUSED_VAR(need_score);
PhraseQuery *const parent = (PhraseQuery*)self->parent;
VArray *const terms = parent->terms;
uint32_t num_terms = VA_Get_Size(terms);
// Bail if there are no terms.
if (!num_terms) return NULL;
// Bail unless field is valid and posting type supports positions.
Similarity *sim = PhraseCompiler_Get_Similarity(self);
Posting *posting = Sim_Make_Posting(sim);
if (posting == NULL || !Obj_Is_A((Obj*)posting, SCOREPOSTING)) {
DECREF(posting);
return NULL;
}
DECREF(posting);
// Bail if there's no PostingListReader for this segment.
PostingListReader *const plist_reader = (PostingListReader*)SegReader_Fetch(
reader, VTable_Get_Name(POSTINGLISTREADER));
if (!plist_reader) { return NULL; }
// Look up each term.
VArray *plists = VA_new(num_terms);
for (uint32_t i = 0; i < num_terms; i++) {
Obj *term = VA_Fetch(terms, i);
PostingList *plist
= PListReader_Posting_List(plist_reader, parent->field, term);
// Bail if any one of the terms isn't in the index.
if (!plist || !PList_Get_Doc_Freq(plist)) {
DECREF(plist);
DECREF(plists);
return NULL;
}
VA_Push(plists, (Obj*)plist);
}
Matcher *retval
= (Matcher*)PhraseScorer_new(sim, plists, (Compiler*)self);
DECREF(plists);
return retval;
}