TextSortCache*
TextSortCache_init(TextSortCache *self, String *field,
FieldType *type, int32_t cardinality,
int32_t doc_max, int32_t null_ord, int32_t ord_width,
InStream *ord_in, InStream *ix_in, InStream *dat_in) {
// Validate.
if (!type || !FType_Sortable(type)) {
DECREF(self);
THROW(ERR, "'%o' isn't a sortable field", field);
}
// Memory map ords and super-init.
int64_t ord_len = InStream_Length(ord_in);
const void *ords = InStream_Buf(ord_in, (size_t)ord_len);
SortCache_init((SortCache*)self, field, type, ords, cardinality, doc_max,
null_ord, ord_width);
TextSortCacheIVARS *const ivars = TextSortCache_IVARS(self);
// Validate ords file length.
double bytes_per_doc = ivars->ord_width / 8.0;
double max_ords = ord_len / bytes_per_doc;
if (max_ords < ivars->doc_max + 1) {
WARN("ORD WIDTH: %i32 %i32", ord_width, ivars->ord_width);
THROW(ERR, "Conflict between ord count max %f64 and doc_max %i32 for "
"field %o", max_ords, doc_max, field);
}
// Assign.
ivars->ord_in = (InStream*)INCREF(ord_in);
ivars->ix_in = (InStream*)INCREF(ix_in);
ivars->dat_in = (InStream*)INCREF(dat_in);
return self;
}
NumericSortCache*
NumSortCache_init(NumericSortCache *self, const CharBuf *field,
FieldType *type, int32_t cardinality, int32_t doc_max,
int32_t null_ord, int32_t ord_width, InStream *ord_in,
InStream *dat_in) {
// Validate.
if (!type || !FType_Sortable(type) || !FType_Is_A(type, NUMERICTYPE)) {
DECREF(self);
THROW(ERR, "'%o' isn't a sortable NumericType field", field);
}
// Mmap ords and super-init.
int64_t ord_len = InStream_Length(ord_in);
void *ords = InStream_Buf(ord_in, (size_t)ord_len);
SortCache_init((SortCache*)self, field, type, ords, cardinality, doc_max,
null_ord, ord_width);
// Assign.
self->ord_in = (InStream*)INCREF(ord_in);
self->dat_in = (InStream*)INCREF(dat_in);
// Validate ord file length.
double BITS_PER_BYTE = 8.0;
double docs_per_byte = BITS_PER_BYTE / self->ord_width;
double max_ords = ord_len * docs_per_byte;
if (max_ords < self->doc_max + 1) {
DECREF(self);
THROW(ERR, "Conflict between ord count max %f64 and doc_max %i32 for "
"field %o", max_ords, self->doc_max, field);
}
ABSTRACT_CLASS_CHECK(self, NUMERICSORTCACHE);
return self;
}
SortCache*
SortCache_new(Schema *schema, Folder *folder, Segment *segment,
i32_t field_num)
{
SortCache *self = (SortCache*)VTable_Make_Obj(&SORTCACHE);
return SortCache_init(self, schema, folder, segment, field_num);
}