VArray*
IxManager_segreaders_to_merge(IndexManager *self, PolyReader *reader,
bool_t all)
{
VArray *seg_readers = VA_Shallow_Copy(PolyReader_Get_Seg_Readers(reader));
UNUSED_VAR(self);
if (!all) {
u32_t i;
u32_t total_docs = 0;
u32_t threshold = 0;
const u32_t num_seg_readers = VA_Get_Size(seg_readers);
/* Sort by ascending size in docs. */
VA_Sort(seg_readers, S_compare_doc_count);
/* Find sparsely populated segments. */
for (i = 0; i < num_seg_readers; i++) {
SegReader *seg_reader = (SegReader*)VA_Fetch(seg_readers, i);
total_docs += SegReader_Doc_Count(seg_reader);
if (total_docs < Math_fibonacci(i + 5)) {
threshold = i + 1;
}
}
VA_Splice(seg_readers, threshold, num_seg_readers);
}
return seg_readers;
}
SortSpec*
SortSpec_init(SortSpec *self, VArray *rules) {
SortSpecIVARS *const ivars = SortSpec_IVARS(self);
ivars->rules = VA_Shallow_Copy(rules);
for (int32_t i = 0, max = VA_Get_Size(rules); i < max; i++) {
SortRule *rule = (SortRule*)VA_Fetch(rules, i);
CERTIFY(rule, SORTRULE);
}
return self;
}
HeatMap*
HeatMap_init(HeatMap *self, VArray *spans, uint32_t window)
{
VArray *spans_copy = VA_Shallow_Copy(spans);
VArray *spans_plus_boosts;
self->spans = NULL;
self->window = window;
VA_Sort(spans_copy, NULL, NULL);
spans_plus_boosts = HeatMap_Generate_Proximity_Boosts(self, spans_copy);
VA_Push_VArray(spans_plus_boosts, spans_copy);
VA_Sort(spans_plus_boosts, NULL, NULL);
self->spans = HeatMap_Flatten_Spans(self, spans_plus_boosts);
DECREF(spans_plus_boosts);
DECREF(spans_copy);
return self;
}
VArray*
PolyReader_seg_readers(PolyReader *self) {
PolyReaderIVARS *const ivars = PolyReader_IVARS(self);
return (VArray*)VA_Shallow_Copy(ivars->sub_readers);
}
