amorynan commented on code in PR #15966:
URL: https://github.com/apache/doris/pull/15966#discussion_r1073144858
##########
be/src/olap/rowset/segment_v2/column_reader.cpp:
##########
@@ -449,13 +478,97 @@ Status ColumnReader::new_iterator(ColumnIterator**
iterator) {
null_iterator);
return Status::OK();
}
+ case FieldType::OLAP_FIELD_TYPE_MAP: {
+ ColumnIterator* key_iterator = nullptr;
+ RETURN_IF_ERROR(_sub_readers[0]->new_iterator(&key_iterator));
+ ColumnIterator* val_iterator = nullptr;
+ RETURN_IF_ERROR(_sub_readers[1]->new_iterator(&val_iterator));
+ ColumnIterator* null_iterator = nullptr;
+ if (is_nullable()) {
+ RETURN_IF_ERROR(_sub_readers[2]->new_iterator(&null_iterator));
+ }
+ *iterator = new MapFileColumnIterator(this,null_iterator,
+ key_iterator, val_iterator);
+ return Status::OK();
+ }
default:
return Status::NotSupported("unsupported type to create iterator:
{}",
std::to_string(type));
}
}
}
+///====================== MapFileColumnIterator
============================////
+MapFileColumnIterator::MapFileColumnIterator(ColumnReader* reader,
ColumnIterator* null_iterator,
+ ColumnIterator* key_iterator,
+ ColumnIterator* val_iterator)
+ : _map_reader(reader) {
+ _key_iterator.reset(key_iterator);
+ _val_iterator.reset(val_iterator);
+ if (_map_reader->is_nullable()) {
+ _null_iterator.reset(null_iterator);
+ }
+}
+
+Status MapFileColumnIterator::init(const ColumnIteratorOptions& opts) {
+ RETURN_IF_ERROR(_key_iterator->init(opts));
+ RETURN_IF_ERROR(_val_iterator->init(opts));
+ if (_map_reader->is_nullable()) {
+ RETURN_IF_ERROR(_null_iterator->init(opts));
+ }
+ return Status::OK();
+}
+
+Status MapFileColumnIterator::_peek_one_offset(ordinal_t* offset) {
+ return Status::OK();
Review Comment:
I will delete this method which is copied from array , but map does not use
it ...
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