Files
scylladb/cql3/statements/alter_table_statement.hh
Avi Kivity d768e9fac5 cql3, related: switch to data_dictionary
Stop using database (and including database.hh) for schema related
purposes and use data_dictionary instead.

data_dictionary::database::real_database() is called from several
places, for these reasons:

 - calling yet-to-be-converted code
 - callers with a legitimate need to access data (e.g. system_keyspace)
   but with the ::database accessor removed from query_processor.
   We'll need to find another way to supply system_keyspace with
   data access.
 - to gain access to the wasm engine for testing whether used
   defined functions compile. We'll have to find another way to
   do this as well.

The change is a straightforward replacement. One case in
modification_statement had to change a capture, but everything else
was just a search-and-replace.

Some files that lost "database.hh" gained "mutation.hh", which they
previously had access to through "database.hh".
2021-12-15 13:54:23 +02:00

100 lines
4.2 KiB
C++

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
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* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Copyright 2015-present ScyllaDB
*
* Modified by ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "cql3/statements/schema_altering_statement.hh"
#include "cql3/statements/cf_prop_defs.hh"
#include "cql3/cql3_type.hh"
#include "cql3/column_identifier.hh"
#include "data_dictionary/data_dictionary.hh"
namespace cql3 {
class query_processor;
namespace statements {
class alter_table_statement : public schema_altering_statement {
public:
enum class type {
add,
alter,
drop,
opts,
rename,
};
using renames_type = std::vector<std::pair<shared_ptr<column_identifier::raw>,
shared_ptr<column_identifier::raw>>>;
struct column_change {
shared_ptr<column_identifier::raw> name;
shared_ptr<cql3_type::raw> validator = nullptr;
bool is_static = false;
};
private:
const type _type;
const std::vector<column_change> _column_changes;
const std::optional<cf_prop_defs> _properties;
const renames_type _renames;
public:
alter_table_statement(cf_name name,
type t,
std::vector<column_change> column_changes,
std::optional<cf_prop_defs> properties,
renames_type renames);
virtual future<> check_access(service::storage_proxy& proxy, const service::client_state& state) const override;
virtual void validate(service::storage_proxy& proxy, const service::client_state& state) const override;
virtual std::unique_ptr<prepared_statement> prepare(data_dictionary::database db, cql_stats& stats) override;
virtual future<::shared_ptr<messages::result_message>> execute(query_processor& qp, service::query_state& state, const query_options& options) const override;
future<std::pair<::shared_ptr<cql_transport::event::schema_change>, std::vector<mutation>>> prepare_schema_mutations(query_processor& qp) const override;
private:
void add_column(const schema& schema, data_dictionary::table cf, schema_builder& cfm, std::vector<view_ptr>& view_updates, const column_identifier& column_name, const cql3_type validator, const column_definition* def, bool is_static) const;
void alter_column(const schema& schema, data_dictionary::table cf, schema_builder& cfm, std::vector<view_ptr>& view_updates, const column_identifier& column_name, const cql3_type validator, const column_definition* def, bool is_static) const;
void drop_column(const schema& schema, data_dictionary::table cf, schema_builder& cfm, std::vector<view_ptr>& view_updates, const column_identifier& column_name, const cql3_type validator, const column_definition* def, bool is_static) const;
std::pair<schema_builder, std::vector<view_ptr>> prepare_schema_update(data_dictionary::database db) const;
};
}
}