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73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/*
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* Copyright (C) 2015 Cloudius Systems, Ltd.
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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 "dht/i_partitioner.hh"
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#include "atomic_cell.hh"
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#include "database_fwd.hh"
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#include "mutation_partition_view.hh"
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class mutation;
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// Immutable, compact form of mutation.
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//
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// This form is primarily destined to be sent over the network channel.
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// Regular mutation can't be deserialized because its complex data structures
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// need schema reference at the time object is constructed. We can't lookup
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// schema before we deserialize column family ID. Another problem is that even
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// if we had the ID somehow, low level RPC layer doesn't know how to lookup
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// the schema. Data can be wrapped in frozen_mutation without schema
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// information, the schema is only needed to access some of the fields.
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//
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class frozen_mutation final {
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private:
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bytes _bytes;
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partition_key _pk;
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private:
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partition_key deserialize_key() const;
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public:
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frozen_mutation(const mutation& m);
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explicit frozen_mutation(bytes&& b);
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frozen_mutation(frozen_mutation&& m) = default;
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frozen_mutation(const frozen_mutation& m) = default;
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frozen_mutation& operator=(frozen_mutation&&) = default;
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frozen_mutation& operator=(const frozen_mutation&) = default;
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bytes_view representation() const { return _bytes; }
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utils::UUID column_family_id() const;
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utils::UUID schema_version() const; // FIXME: Should replace column_family_id()
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partition_key_view key(const schema& s) const;
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dht::decorated_key decorated_key(const schema& s) const;
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mutation_partition_view partition() const;
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mutation unfreeze(schema_ptr s) const;
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struct printer {
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const frozen_mutation& self;
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schema_ptr schema;
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friend std::ostream& operator<<(std::ostream&, const printer&);
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};
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printer pretty_printer(schema_ptr) const;
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};
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frozen_mutation freeze(const mutation& m);
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