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20069372e7
We will want to reuse the functions that we get from an aggregate without making a deep copy, and it's only possible if we get pointers from the aggregate instead of actual values.
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/*
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* Copyright (C) 2021-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include "abstract_function.hh"
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#include "scalar_function.hh"
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#include "aggregate_function.hh"
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#include "data_dictionary/keyspace_element.hh"
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namespace cql3 {
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namespace functions {
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class user_aggregate : public abstract_function, public aggregate_function, public data_dictionary::keyspace_element {
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bytes_opt _initcond;
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::shared_ptr<scalar_function> _sfunc;
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::shared_ptr<scalar_function> _reducefunc;
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::shared_ptr<scalar_function> _finalfunc;
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public:
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user_aggregate(function_name fname, bytes_opt initcond, ::shared_ptr<scalar_function> sfunc, ::shared_ptr<scalar_function> reducefunc, ::shared_ptr<scalar_function> finalfunc);
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virtual std::unique_ptr<aggregate_function::aggregate> new_aggregate() override;
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virtual ::shared_ptr<aggregate_function> reducible_aggregate_function() override;
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virtual bool is_pure() const override;
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virtual bool is_native() const override;
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virtual bool is_aggregate() const override;
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virtual bool is_reducible() const override;
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virtual bool requires_thread() const override;
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bool has_finalfunc() const;
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virtual sstring keypace_name() const override { return name().keyspace; }
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virtual sstring element_name() const override { return name().name; }
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virtual sstring element_type() const override { return "aggregate"; }
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virtual std::ostream& describe(std::ostream& os) const override;
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seastar::shared_ptr<scalar_function> sfunc() const {
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return _sfunc;
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}
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seastar::shared_ptr<scalar_function> reducefunc() const {
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return _reducefunc;
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}
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seastar::shared_ptr<scalar_function> finalfunc() const {
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return _finalfunc;
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}
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const bytes_opt& initcond() const {
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return _initcond;
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}
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};
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}
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}
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