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scylladb/mutation_partition_visitor.hh
Pekka Enberg 38a54df863 Fix pre-ScyllaDB copyright statements
People keep tripping over the old copyrights and copy-pasting them to
new files. Search and replace "Cloudius Systems" with "ScyllaDB".

Message-Id: <1460013664-25966-1-git-send-email-penberg@scylladb.com>
2016-04-08 08:12:47 +03:00

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2.0 KiB
C++

/*
* Copyright (C) 2015 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 "atomic_cell.hh"
#include "tombstone.hh"
#include "keys.hh"
class row_marker;
// Guarantees:
//
// - any tombstones which affect cell's liveness are visited before that cell
//
// - rows are visited in ascending order with respect to their keys
//
// - row header (accept_row) is visited before that row's cells
//
// - row tombstones are visited in ascending order with respect to their key prefixes
//
// - cells in given row are visited in ascending order with respect to their column IDs
//
// - static row is visited before any clustered row
//
// - for each column in a row only one variant of accept_(static|row)_cell() is called, appropriate
// for column's kind (atomic or collection).
//
class mutation_partition_visitor {
public:
virtual void accept_partition_tombstone(tombstone) = 0;
virtual void accept_static_cell(column_id, atomic_cell_view) = 0;
virtual void accept_static_cell(column_id, collection_mutation_view) = 0;
virtual void accept_row_tombstone(clustering_key_prefix_view, tombstone) = 0;
virtual void accept_row(clustering_key_view key, tombstone deleted_at, const row_marker& rm) = 0;
virtual void accept_row_cell(column_id id, atomic_cell_view) = 0;
virtual void accept_row_cell(column_id id, collection_mutation_view) = 0;
};