4fa12f2fb8
The header sits in many other headers, but there's a handy schema_fwd.hh that's tiny and contains needed declarations for other headers. So replace shema.hh with schema_fwd.hh in most of the headers (and remove completely from some). Signed-off-by: Pavel Emelyanov <xemul@scylladb.com> Message-Id: <20200303102050.18462-1-xemul@scylladb.com>
69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
/*
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* Copyright (C) 2016 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 "schema_fwd.hh"
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#include "query-request.hh"
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namespace query {
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class clustering_key_filter_ranges {
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clustering_row_ranges _storage;
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std::reference_wrapper<const clustering_row_ranges> _ref;
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public:
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clustering_key_filter_ranges(const clustering_row_ranges& ranges) : _ref(ranges) { }
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struct reversed { };
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clustering_key_filter_ranges(reversed, const clustering_row_ranges& ranges)
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: _storage(ranges.rbegin(), ranges.rend()), _ref(_storage) { }
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clustering_key_filter_ranges(clustering_key_filter_ranges&& other) noexcept
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: _storage(std::move(other._storage))
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, _ref(&other._ref.get() == &other._storage ? _storage : other._ref.get())
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{ }
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clustering_key_filter_ranges& operator=(clustering_key_filter_ranges&& other) noexcept {
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if (this != &other) {
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_storage = std::move(other._storage);
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_ref = (&other._ref.get() == &other._storage) ? _storage : other._ref.get();
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}
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return *this;
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}
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auto begin() const { return _ref.get().begin(); }
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auto end() const { return _ref.get().end(); }
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bool empty() const { return _ref.get().empty(); }
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size_t size() const { return _ref.get().size(); }
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const clustering_row_ranges& ranges() const { return _ref; }
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static clustering_key_filter_ranges get_ranges(const schema& schema, const query::partition_slice& slice, const partition_key& key) {
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const query::clustering_row_ranges& ranges = slice.row_ranges(schema, key);
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if (slice.options.contains(query::partition_slice::option::reversed)) {
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return clustering_key_filter_ranges(clustering_key_filter_ranges::reversed{}, ranges);
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}
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return clustering_key_filter_ranges(ranges);
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}
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};
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}
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