ff55b76562
Use seastar::checked_ptr<weak_ptr<pepared_statement>> instead of shared_ptr for passing prepared statements around. This allows an easy tracking and handling of statements invalidation. This implementation will throw an exception every time an invalidated statement reference is dereferenced. Signed-off-by: Vlad Zolotarov <vladz@scylladb.com>
93 lines
3.2 KiB
C++
93 lines
3.2 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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* Copyright (C) 2015 ScyllaDB
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*
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* Modified by 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/statements/ks_prop_defs.hh"
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#include "transport/event.hh"
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#include "core/shared_ptr.hh"
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namespace cql3 {
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namespace statements {
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/** A <code>CREATE KEYSPACE</code> statement parsed from a CQL query. */
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class create_keyspace_statement : public schema_altering_statement {
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private:
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sstring _name;
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shared_ptr<ks_prop_defs> _attrs;
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bool _if_not_exists;
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public:
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/**
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* Creates a new <code>CreateKeyspaceStatement</code> instance for a given
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* keyspace name and keyword arguments.
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*
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* @param name the name of the keyspace to create
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* @param attrs map of the raw keyword arguments that followed the <code>WITH</code> keyword.
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*/
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create_keyspace_statement(const sstring& name, shared_ptr<ks_prop_defs> attrs, bool if_not_exists);
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virtual const sstring& keyspace() const override;
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virtual future<> check_access(const service::client_state& state) override;
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/**
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* The <code>CqlParser</code> only goes as far as extracting the keyword arguments
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* from these statements, so this method is responsible for processing and
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* validating.
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*
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* @throws InvalidRequestException if arguments are missing or unacceptable
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*/
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virtual void validate(distributed<service::storage_proxy>&, const service::client_state& state) override;
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virtual future<bool> announce_migration(distributed<service::storage_proxy>& proxy, bool is_local_only) override;
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virtual shared_ptr<transport::event::schema_change> change_event() override;
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virtual std::unique_ptr<prepared> prepare(database& db, cql_stats& stats) override;
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};
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}
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}
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