90346236ac
cql_statement is a class representing a prepared statement in Scylla. It is used concurrently during execution, so it is important that its change is not changed by execution. Add const qualifier to the execution methods family, throghout the cql hierarchy. Mark a few places which do mutate prepared statement state during execution as mutable. While these are not affecting production today, as code ages, they may become a source of latent bugs and should be moved out of the prepared state or evaluated at prepare eventually: cf_property_defs::_compaction_strategy_class list_permissions_statement::_resource permission_altering_statement::_resource property_definitions::_properties select_statement::_opts
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/*
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* Copyright (C) 2019 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 "cql3/statements/schema_altering_statement.hh"
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#include "cql3/functions/user_function.hh"
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namespace cql3 {
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namespace statements {
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class function_statement : public schema_altering_statement {
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protected:
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virtual future<> check_access(const service::client_state& state) const override;
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virtual void prepare_keyspace(const service::client_state& state) override;
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functions::function_name _name;
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std::vector<shared_ptr<cql3_type::raw>> _raw_arg_types;
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mutable std::vector<data_type> _arg_types;
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static shared_ptr<cql_transport::event::schema_change> create_schema_change(
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const functions::function& func, bool created);
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function_statement(functions::function_name name, std::vector<shared_ptr<cql3_type::raw>> raw_arg_types);
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void create_arg_types(service::storage_proxy& proxy) const;
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data_type prepare_type(service::storage_proxy& proxy, cql3_type::raw &t) const;
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};
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// common logic for creating UDF and UDA
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class create_function_statement_base : public function_statement {
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protected:
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virtual void validate(service::storage_proxy& proxy, const service::client_state& state) const override;
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virtual void create(service::storage_proxy& proxy, functions::function* old) const = 0;
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bool _or_replace;
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bool _if_not_exists;
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create_function_statement_base(functions::function_name name, std::vector<shared_ptr<cql3_type::raw>> raw_arg_types,
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bool or_replace, bool if_not_exists);
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};
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// common logic for dropping UDF and UDA
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class drop_function_statement_base : public function_statement {
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protected:
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virtual void validate(service::storage_proxy&, const service::client_state& state) const override;
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bool _args_present;
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bool _if_exists;
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mutable shared_ptr<functions::function> _func{};
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drop_function_statement_base(functions::function_name name, std::vector<shared_ptr<cql3_type::raw>> arg_types,
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bool args_present, bool if_exists);
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};
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}
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}
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