DefaultDocReader*
DefDocReader_init(DefaultDocReader *self, Schema *schema, Folder *folder,
Snapshot *snapshot, Vector *segments, int32_t seg_tick) {
Hash *metadata;
Segment *segment;
DocReader_init((DocReader*)self, schema, folder, snapshot, segments,
seg_tick);
DefaultDocReaderIVARS *const ivars = DefDocReader_IVARS(self);
segment = DefDocReader_Get_Segment(self);
metadata = (Hash*)Seg_Fetch_Metadata_Utf8(segment, "documents", 9);
if (metadata) {
String *seg_name = Seg_Get_Name(segment);
String *ix_file = Str_newf("%o/documents.ix", seg_name);
String *dat_file = Str_newf("%o/documents.dat", seg_name);
Obj *format = Hash_Fetch_Utf8(metadata, "format", 6);
// Check format.
if (!format) { THROW(ERR, "Missing 'format' var"); }
else {
int64_t format_val = Json_obj_to_i64(format);
if (format_val < DocWriter_current_file_format) {
THROW(ERR, "Obsolete doc storage format %i64; "
"Index regeneration is required", format_val);
}
else if (format_val != DocWriter_current_file_format) {
THROW(ERR, "Unsupported doc storage format: %i64", format_val);
}
}
// Get streams.
if (Folder_Exists(folder, ix_file)) {
ivars->ix_in = Folder_Open_In(folder, ix_file);
if (!ivars->ix_in) {
Err *error = (Err*)INCREF(Err_get_error());
DECREF(ix_file);
DECREF(dat_file);
DECREF(self);
RETHROW(error);
}
ivars->dat_in = Folder_Open_In(folder, dat_file);
if (!ivars->dat_in) {
Err *error = (Err*)INCREF(Err_get_error());
DECREF(ix_file);
DECREF(dat_file);
DECREF(self);
RETHROW(error);
}
}
DECREF(ix_file);
DECREF(dat_file);
}
return self;
}
PolyDocReader*
PolyDocReader_init(PolyDocReader *self, Vector *readers, I32Array *offsets) {
DocReader_init((DocReader*)self, NULL, NULL, NULL, NULL, -1);
PolyDocReaderIVARS *const ivars = PolyDocReader_IVARS(self);
for (uint32_t i = 0, max = Vec_Get_Size(readers); i < max; i++) {
CERTIFY(Vec_Fetch(readers, i), DOCREADER);
}
ivars->readers = (Vector*)INCREF(readers);
ivars->offsets = (I32Array*)INCREF(offsets);
return self;
}
PolyDocReader*
PolyDocReader_init(PolyDocReader *self, VArray *readers, I32Array *offsets)
{
u32_t i, max;
DocReader_init((DocReader*)self, NULL, NULL, NULL, NULL, -1);
for (i = 0, max = VA_Get_Size(readers); i < max; i++) {
ASSERT_IS_A(VA_Fetch(readers, i), DOCREADER);
}
self->readers = (VArray*)INCREF(readers);
self->offsets = (I32Array*)INCREF(offsets);
return self;
}
DefaultDocReader*
DefDocReader_init(DefaultDocReader *self, Schema *schema, Folder *folder,
Snapshot *snapshot, VArray *segments, i32_t seg_tick)
{
Hash *metadata;
Segment *segment;
DocReader_init((DocReader*)self, schema, folder, snapshot, segments,
seg_tick);
segment = DefDocReader_Get_Segment(self);
metadata = (Hash*)Seg_Fetch_Metadata_Str(segment, "documents", 9);
if (metadata) {
CharBuf *seg_name = Seg_Get_Name(segment);
CharBuf *ix_file = CB_newf("%o/documents.ix", seg_name);
CharBuf *dat_file = CB_newf("%o/documents.dat", seg_name);
Obj *format = Hash_Fetch_Str(metadata, "format", 6);
/* Check format. */
if (!format) { THROW("Missing 'format' var"); }
else {
i64_t format_val = Obj_To_I64(format);
if (format_val < DocWriter_current_file_format) {
THROW("Obsolete doc storage format %i64; "
"Index regeneration is required", format_val);
}
else if (format_val != DocWriter_current_file_format) {
THROW("Unsupported doc storage format: %i64", format_val);
}
}
/* Get streams. */
if (Folder_Exists(folder, ix_file)) {
self->ix_in = Folder_Open_In(folder, ix_file);
self->dat_in = Folder_Open_In(folder, dat_file);
if (!self->ix_in || !self->dat_in) {
CharBuf *mess = MAKE_MESS("Can't open either %o or %o",
ix_file, dat_file);
DECREF(ix_file);
DECREF(dat_file);
DECREF(self);
Err_throw_mess(mess);
}
}
DECREF(ix_file);
DECREF(dat_file);
}
return self;
}