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
52 lines
2.2 KiB
C++
52 lines
2.2 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/function_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 create_function_statement final : public create_function_statement_base {
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virtual std::unique_ptr<prepared> prepare(database& db, cql_stats& stats) override;
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virtual future<shared_ptr<cql_transport::event::schema_change>> announce_migration(
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service::storage_proxy& proxy, bool is_local_only) const override;
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virtual void create(service::storage_proxy& proxy, functions::function* old) const override;
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sstring _language;
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sstring _body;
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std::vector<shared_ptr<column_identifier>> _arg_names;
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shared_ptr<cql3_type::raw> _return_type;
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bool _called_on_null_input;
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// To support "IF NOT EXISTS" we create the function during the verify stage and use it in announce_migration. In
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// this case it is possible that there is no error but no function is created. We could duplicate some logic in
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// announce_migration or have a _should_create boolean, but creating the function early is probably the simplest.
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mutable shared_ptr<functions::user_function> _func{};
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public:
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create_function_statement(functions::function_name name, sstring language, sstring body,
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std::vector<shared_ptr<column_identifier>> arg_names, std::vector<shared_ptr<cql3_type::raw>> arg_types,
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shared_ptr<cql3_type::raw> return_type, bool called_on_null_input, bool or_replace, bool if_not_exists);
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};
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}
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}
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