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060f93477b
We must use canonical_mutation form to allow for changes in the schema of schema tables. The node which deserializes schema mutations may not have the same version of the schema tables so we cannot use frozen_mutation, which is a schema dependent form.
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
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* Copyright 2015 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 <vector>
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#include "mutation.hh"
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#include "schema.hh"
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// Commutative representation of table schema
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class schema_mutations {
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mutation _columnfamilies;
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mutation _columns;
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public:
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schema_mutations(mutation columnfamilies, mutation columns)
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: _columnfamilies(std::move(columnfamilies))
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, _columns(std::move(columns))
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{ }
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schema_mutations(schema_mutations&&) = default;
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schema_mutations& operator=(schema_mutations&&) = default;
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schema_mutations(const schema_mutations&) = default;
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schema_mutations& operator=(const schema_mutations&) = default;
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void copy_to(std::vector<mutation>& dst) const;
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const mutation& columnfamilies_mutation() const {
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return _columnfamilies;
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}
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const mutation& columns_mutation() const {
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return _columns;
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}
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table_schema_version digest() const;
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bool operator==(const schema_mutations&) const;
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bool operator!=(const schema_mutations&) const;
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// Returns true iff any mutations contain any live cells
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bool live() const;
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friend class db::serializer<schema_mutations>;
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};
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namespace db {
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template<> serializer<schema_mutations>::serializer(const schema_mutations&);
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template<> void serializer<schema_mutations>::write(output&, const schema_mutations&);
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template<> schema_mutations serializer<schema_mutations>::read(input&);
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extern template class serializer<schema_mutations>;
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}
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