void
DefDelWriter_Delete_By_Term_IMP(DefaultDeletionsWriter *self,
String *field, Obj *term) {
DefaultDeletionsWriterIVARS *const ivars = DefDelWriter_IVARS(self);
for (uint32_t i = 0, max = VA_Get_Size(ivars->seg_readers); i < max; i++) {
SegReader *seg_reader = (SegReader*)VA_Fetch(ivars->seg_readers, i);
PostingListReader *plist_reader
= (PostingListReader*)SegReader_Fetch(
seg_reader, Class_Get_Name(POSTINGLISTREADER));
BitVector *bit_vec = (BitVector*)VA_Fetch(ivars->bit_vecs, i);
PostingList *plist = plist_reader
? PListReader_Posting_List(plist_reader, field, term)
: NULL;
int32_t doc_id;
int32_t num_zapped = 0;
// Iterate through postings, marking each doc as deleted.
if (plist) {
while (0 != (doc_id = PList_Next(plist))) {
num_zapped += !BitVec_Get(bit_vec, doc_id);
BitVec_Set(bit_vec, doc_id);
}
if (num_zapped) { ivars->updated[i] = true; }
DECREF(plist);
}
}
}
void
PostPool_Add_Segment_IMP(PostingPool *self, SegReader *reader,
I32Array *doc_map, int32_t doc_base) {
PostingPoolIVARS *const ivars = PostPool_IVARS(self);
LexiconReader *lex_reader = (LexiconReader*)SegReader_Fetch(
reader, Class_Get_Name(LEXICONREADER));
Lexicon *lexicon = lex_reader
? LexReader_Lexicon(lex_reader, ivars->field, NULL)
: NULL;
if (lexicon) {
PostingListReader *plist_reader
= (PostingListReader*)SegReader_Fetch(
reader, Class_Get_Name(POSTINGLISTREADER));
PostingList *plist = plist_reader
? PListReader_Posting_List(plist_reader, ivars->field, NULL)
: NULL;
if (!plist) {
THROW(ERR, "Got a Lexicon but no PostingList for '%o' in '%o'",
ivars->field, SegReader_Get_Seg_Name(reader));
}
PostingPool *run
= PostPool_new(ivars->schema, ivars->snapshot, ivars->segment,
ivars->polyreader, ivars->field, ivars->lex_writer,
ivars->mem_pool, ivars->lex_temp_out,
ivars->post_temp_out, ivars->skip_out);
PostingPoolIVARS *const run_ivars = PostPool_IVARS(run);
run_ivars->lexicon = lexicon;
run_ivars->plist = plist;
run_ivars->doc_base = doc_base;
run_ivars->doc_map = (I32Array*)INCREF(doc_map);
PostPool_Add_Run(self, (SortExternal*)run);
}
}
Matcher*
TermCompiler_Make_Matcher_IMP(TermCompiler *self, SegReader *reader,
bool need_score) {
TermCompilerIVARS *const ivars = TermCompiler_IVARS(self);
TermQueryIVARS *const parent_ivars
= TermQuery_IVARS((TermQuery*)ivars->parent);
PostingListReader *plist_reader
= (PostingListReader*)SegReader_Fetch(
reader, Class_Get_Name(POSTINGLISTREADER));
PostingList *plist = plist_reader
? PListReader_Posting_List(plist_reader,
parent_ivars->field,
parent_ivars->term)
: NULL;
if (plist == NULL || PList_Get_Doc_Freq(plist) == 0) {
DECREF(plist);
return NULL;
}
else {
Matcher *retval = PList_Make_Matcher(plist, ivars->sim,
(Compiler*)self, need_score);
DECREF(plist);
return retval;
}
}
Matcher*
PhraseCompiler_Make_Matcher_IMP(PhraseCompiler *self, SegReader *reader,
bool need_score) {
UNUSED_VAR(need_score);
PhraseCompilerIVARS *const ivars = PhraseCompiler_IVARS(self);
PhraseQueryIVARS *const parent_ivars
= PhraseQuery_IVARS((PhraseQuery*)ivars->parent);
Vector *const terms = parent_ivars->terms;
uint32_t num_terms = Vec_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, Class_Get_Name(POSTINGLISTREADER));
if (!plist_reader) { return NULL; }
// Look up each term.
Vector *plists = Vec_new(num_terms);
for (uint32_t i = 0; i < num_terms; i++) {
Obj *term = Vec_Fetch(terms, i);
PostingList *plist
= PListReader_Posting_List(plist_reader, parent_ivars->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;
}
Vec_Push(plists, (Obj*)plist);
}
Matcher *retval
= (Matcher*)PhraseMatcher_new(sim, plists, (Compiler*)self);
DECREF(plists);
return retval;
}
