fcb8d040e8
Instead of lengthy blurbs, switch to single-line, machine-readable standardized (https://spdx.dev) license identifiers. The Linux kernel switched long ago, so there is strong precedent. Three cases are handled: AGPL-only, Apache-only, and dual licensed. For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0), reasoning that our changes are extensive enough to apply our license. The changes we applied mechanically with a script, except to licenses/README.md. Closes #9937
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/*
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*/
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/*
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* Modified by ScyllaDB
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
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*/
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#include "abstract_function_selector.hh"
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#include "cql3/functions/aggregate_function.hh"
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#include "cql_serialization_format.hh"
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#pragma once
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namespace cql3 {
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namespace selection {
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class aggregate_function_selector : public abstract_function_selector_for<functions::aggregate_function> {
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std::unique_ptr<functions::aggregate_function::aggregate> _aggregate;
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public:
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virtual bool is_aggregate() const override {
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return true;
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}
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virtual void add_input(cql_serialization_format sf, result_set_builder& rs) override {
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// Aggregation of aggregation is not supported
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size_t m = _arg_selectors.size();
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for (size_t i = 0; i < m; ++i) {
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auto&& s = _arg_selectors[i];
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s->add_input(sf, rs);
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_args[i] = s->get_output(sf);
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s->reset();
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}
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_aggregate->add_input(sf, _args);
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}
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virtual bytes_opt get_output(cql_serialization_format sf) override {
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return _aggregate->compute(sf);
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}
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virtual void reset() override {
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_aggregate->reset();
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}
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aggregate_function_selector(shared_ptr<functions::function> func,
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std::vector<shared_ptr<selector>> arg_selectors)
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: abstract_function_selector_for<functions::aggregate_function>(
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dynamic_pointer_cast<functions::aggregate_function>(func), std::move(arg_selectors))
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, _aggregate(fun()->new_aggregate()) {
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}
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};
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}
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}
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