bfb8a3c172
The write path uses a base schema at a particular version, and we want it to use the materialized views at the corresponding version. To achieve this, we need to map the state currently in db::view::view to a particular schema version, which this patch does by introducing the view_info class to hold the state previously in db::view::view, and by having a view schema directly point to it. The changes in the patch are thus: 1) Introduce view_info to hold the extra view state; 2) Point to the view_info from the schema; 3) Make the functions in the now stateless db::view::view non-member; 4) Remove the db::view::view class. All changes are structural and don't affect current behavior. Signed-off-by: Duarte Nunes <duarte@scylladb.com>
72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/*
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* Copyright (C) 2017 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 "cql3/statements/select_statement.hh"
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#include "dht/i_partitioner.hh"
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#include "query-request.hh"
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#include "schema.hh"
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class view_info final {
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const schema& _schema;
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raw_view_info _raw;
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// The following fields are used to select base table rows.
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mutable shared_ptr<cql3::statements::select_statement> _select_statement;
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mutable stdx::optional<query::partition_slice> _partition_slice;
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mutable stdx::optional<dht::partition_range_vector> _partition_ranges;
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mutable const column_definition* _base_non_pk_column_in_view_pk;
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public:
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view_info(const schema& schema, const raw_view_info& raw_view_info);
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const raw_view_info& raw() const {
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return _raw;
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}
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const utils::UUID& base_id() const {
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return _raw.base_id();
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}
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const sstring& base_name() const {
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return _raw.base_name();
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}
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bool include_all_columns() const {
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return _raw.include_all_columns();
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}
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const sstring& where_clause() const {
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return _raw.where_clause();
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}
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cql3::statements::select_statement& select_statement() const;
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const query::partition_slice& partition_slice() const;
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const dht::partition_range_vector& partition_ranges() const;
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const column_definition* view_column(const schema& base, column_id base_id) const;
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const column_definition* base_non_pk_column_in_view_pk(const schema& base) const;
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friend bool operator==(const view_info& x, const view_info& y) {
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return x._raw == y._raw;
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}
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friend std::ostream& operator<<(std::ostream& os, const view_info& view) {
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return os << view._raw;
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}
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}; |