5937b1fa23
After fcb8d040 ("treewide: use Software Package Data Exchange
(SPDX) license identifiers"), many dual-licensed files were
left with empty comments on top. Remove them to avoid visual
noise.
Closes #10562
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/*
|
|
* Modified by ScyllaDB
|
|
* Copyright (C) 2015-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
|
|
*/
|
|
|
|
#include "abstract_function_selector.hh"
|
|
#include "cql3/functions/aggregate_function.hh"
|
|
#include "cql_serialization_format.hh"
|
|
|
|
#pragma once
|
|
|
|
namespace cql3 {
|
|
|
|
namespace selection {
|
|
|
|
class aggregate_function_selector : public abstract_function_selector_for<functions::aggregate_function> {
|
|
std::unique_ptr<functions::aggregate_function::aggregate> _aggregate;
|
|
public:
|
|
virtual bool is_aggregate() const override {
|
|
return true;
|
|
}
|
|
|
|
virtual void add_input(cql_serialization_format sf, result_set_builder& rs) override {
|
|
// Aggregation of aggregation is not supported
|
|
size_t m = _arg_selectors.size();
|
|
for (size_t i = 0; i < m; ++i) {
|
|
auto&& s = _arg_selectors[i];
|
|
s->add_input(sf, rs);
|
|
_args[i] = s->get_output(sf);
|
|
s->reset();
|
|
}
|
|
_aggregate->add_input(sf, _args);
|
|
}
|
|
|
|
virtual bytes_opt get_output(cql_serialization_format sf) override {
|
|
return _aggregate->compute(sf);
|
|
}
|
|
|
|
virtual void reset() override {
|
|
_aggregate->reset();
|
|
}
|
|
|
|
aggregate_function_selector(shared_ptr<functions::function> func,
|
|
std::vector<shared_ptr<selector>> arg_selectors)
|
|
: abstract_function_selector_for<functions::aggregate_function>(
|
|
dynamic_pointer_cast<functions::aggregate_function>(func), std::move(arg_selectors))
|
|
, _aggregate(fun()->new_aggregate()) {
|
|
}
|
|
};
|
|
|
|
}
|
|
}
|