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71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
/*
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* Copyright (C) 2015-present 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 <optional>
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#include <vector>
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#include "query-request.hh"
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#include "schema_fwd.hh"
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//
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// Fluent builder for query::partition_slice.
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//
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// Selects everything by default, unless restricted. Each property can be
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// restricted separately. For example, by default all static columns are
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// selected, but if with_static_column() is called then only that column will
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// be included. Still, all regular columns and the whole clustering range will
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// be selected (unless restricted).
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//
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class partition_slice_builder {
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std::optional<query::column_id_vector> _regular_columns;
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std::optional<query::column_id_vector> _static_columns;
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std::optional<std::vector<query::clustering_range>> _row_ranges;
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std::unique_ptr<query::specific_ranges> _specific_ranges;
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const schema& _schema;
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query::partition_slice::option_set _options;
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public:
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partition_slice_builder(const schema& schema);
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partition_slice_builder(const schema& schema, query::partition_slice slice);
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partition_slice_builder& with_static_column(bytes name);
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partition_slice_builder& with_no_static_columns();
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partition_slice_builder& with_regular_column(bytes name);
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partition_slice_builder& with_no_regular_columns();
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partition_slice_builder& with_range(query::clustering_range range);
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partition_slice_builder& with_ranges(std::vector<query::clustering_range>);
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// noop if no ranges have been set yet
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partition_slice_builder& mutate_ranges(std::function<void(std::vector<query::clustering_range>&)>);
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// noop if no specific ranges have been set yet
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partition_slice_builder& mutate_specific_ranges(std::function<void(query::specific_ranges&)>);
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partition_slice_builder& without_partition_key_columns();
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partition_slice_builder& without_clustering_key_columns();
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partition_slice_builder& reversed();
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template <query::partition_slice::option OPTION>
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partition_slice_builder& with_option() {
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_options.set<OPTION>();
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return *this;
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}
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query::partition_slice build();
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};
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