3e4fb7cad6
This method needs data_dictionary to work. Fortunately, all callers of it already have the dictionary at hand and can just pass it as argument. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/*
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* Copyright (C) 2017-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include "dht/i_partitioner.hh"
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#include "query-request.hh"
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#include "schema/schema_fwd.hh"
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#include "db/view/view.hh"
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namespace cql3::statements {
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class select_statement;
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}
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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 std::optional<query::partition_slice> _partition_slice;
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db::view::base_info_ptr _base_info;
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mutable bool _has_computed_column_depending_on_base_non_primary_key;
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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 table_id& 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(data_dictionary::database) const;
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const query::partition_slice& partition_slice(data_dictionary::database) const;
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const column_definition* view_column(const schema& base, column_kind kind, column_id base_id) const;
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const column_definition* view_column(const column_definition& base_def) const;
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bool has_base_non_pk_columns_in_view_pk() const;
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bool has_computed_column_depending_on_base_non_primary_key() const {
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return _has_computed_column_depending_on_base_non_primary_key;
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}
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/// Returns a pointer to the base_dependent_view_info which matches the current
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/// schema of the base table.
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///
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/// base_dependent_view_info lives separately from the view schema.
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/// It can change without the view schema changing its value.
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/// This pointer is updated on base table schema changes as long as this view_info
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/// corresponds to the current schema of the view. After that the pointer stops tracking
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/// the base table schema.
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///
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/// The snapshot of both the view schema and base_dependent_view_info is represented
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/// by view_and_base. See with_base_info_snapshot().
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const db::view::base_info_ptr& base_info() const { return _base_info; }
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void set_base_info(db::view::base_info_ptr);
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db::view::base_info_ptr make_base_dependent_view_info(const schema& base_schema) 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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};
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