cac321cd12
Function call selectors correctly checked if their arguments are required to run in threaded context, but forgot to check the function itself - which is now done.
119 lines
4.0 KiB
C++
119 lines
4.0 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "selector.hh"
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#include "cql3/functions/function.hh"
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#include "cql3/functions/function_name.hh"
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#include "cql3/functions/user_aggregate.hh"
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#include <boost/algorithm/cxx11/any_of.hpp>
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namespace cql3 {
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namespace selection {
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class selector_factories;
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class abstract_function_selector : public selector {
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protected:
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shared_ptr<functions::function> _fun;
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/**
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* The list used to pass the function arguments is recycled to avoid the cost of instantiating a new list
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* with each function call.
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*/
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std::vector<bytes_opt> _args;
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std::vector<shared_ptr<selector>> _arg_selectors;
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const bool _requires_thread;
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public:
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static shared_ptr<factory> new_factory(shared_ptr<functions::function> fun, shared_ptr<selector_factories> factories);
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abstract_function_selector(shared_ptr<functions::function> fun, std::vector<shared_ptr<selector>> arg_selectors)
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: _fun(std::move(fun)), _arg_selectors(std::move(arg_selectors)),
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_requires_thread(boost::algorithm::any_of(_arg_selectors, [] (auto& s) { return s->requires_thread(); })
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|| _fun->requires_thread()) {
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_args.resize(_arg_selectors.size());
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}
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virtual bool requires_thread() const override;
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virtual data_type get_type() const override {
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return _fun->return_type();
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}
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#if 0
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@Override
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public String toString()
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{
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return new StrBuilder().append(fun.name())
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.append("(")
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.appendWithSeparators(argSelectors, ", ")
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.append(")")
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.toString();
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}
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#endif
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};
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template <typename T /* extends Function */>
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class abstract_function_selector_for : public abstract_function_selector {
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shared_ptr<T> _tfun; // We can't use static_pointer_cast due to virtual inheritance,
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// so store it locally to amortize cost of dynamic_pointer_cast
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protected:
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shared_ptr<T> fun() { return _tfun; }
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shared_ptr<const T> fun() const { return _tfun; }
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public:
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abstract_function_selector_for(shared_ptr<T> fun, std::vector<shared_ptr<selector>> arg_selectors)
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: abstract_function_selector(fun, std::move(arg_selectors))
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, _tfun(dynamic_pointer_cast<T>(fun)) {
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}
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const functions::function_name& name() const {
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return _tfun->name();
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}
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virtual sstring assignment_testable_source_context() const override {
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return format("{}", this->name());
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}
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};
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}
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}
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