8d944ff755
The partition builder doesn't expect the looked-up row to exist. In fact it already existing is a sign of a bug. Currently bugs resulting in duplicate rows will manifest by tripping an assert in `row::append_cell()`. This however results in poor diagnostics, so we want to catch these errors sooner to be able to provide higher level diagnostics. To this end, switch to the freshly introduced `append_clustering_row()` so that duplicate rows are found early and in a context where their identity is known.
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
/*
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* Copyright (C) 2015 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 "mutation_partition.hh"
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#include "mutation_partition_view.hh"
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// Partition visitor which builds mutation_partition corresponding to the data its fed with.
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class partition_builder final : public mutation_partition_visitor {
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private:
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const schema& _schema;
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mutation_partition& _partition;
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deletable_row* _current_row;
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public:
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// @p will hold the result of building.
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// @p must be empty.
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partition_builder(const schema& s, mutation_partition& p)
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: _schema(s)
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, _partition(p)
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{ }
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virtual void accept_partition_tombstone(tombstone t) override {
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_partition.apply(t);
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}
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virtual void accept_static_cell(column_id id, atomic_cell_view cell) override {
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auto& cdef = _schema.static_column_at(id);
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accept_static_cell(id, atomic_cell(*cdef.type, cell));
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}
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void accept_static_cell(column_id id, atomic_cell&& cell) {
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row& r = _partition.static_row().maybe_create();
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r.append_cell(id, atomic_cell_or_collection(std::move(cell)));
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}
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virtual void accept_static_cell(column_id id, collection_mutation_view collection) override {
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row& r = _partition.static_row().maybe_create();
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r.append_cell(id, collection_mutation(*_schema.static_column_at(id).type, std::move(collection)));
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}
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virtual void accept_row_tombstone(const range_tombstone& rt) override {
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_partition.apply_row_tombstone(_schema, rt);
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}
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virtual void accept_row(position_in_partition_view key, const row_tombstone& deleted_at, const row_marker& rm, is_dummy dummy, is_continuous continuous) override {
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deletable_row& r = _partition.append_clustered_row(_schema, key, dummy, continuous);
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r.apply(rm);
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r.apply(deleted_at);
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_current_row = &r;
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}
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virtual void accept_row_cell(column_id id, atomic_cell_view cell) override {
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auto& cdef = _schema.regular_column_at(id);
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accept_row_cell(id, atomic_cell(*cdef.type, cell));
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}
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void accept_row_cell(column_id id, atomic_cell&& cell) {
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row& r = _current_row->cells();
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r.append_cell(id, std::move(cell));
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}
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virtual void accept_row_cell(column_id id, collection_mutation_view collection) override {
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row& r = _current_row->cells();
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r.append_cell(id, collection_mutation(*_schema.regular_column_at(id).type, std::move(collection)));
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}
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};
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