beedb/include/execution/update_operator.h

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2022-04-04 20:25:01 +02:00
/*------------------------------------------------------------------------------*
* Architecture & Implementation of DBMS *
*------------------------------------------------------------------------------*
* Copyright 2022 Databases and Information Systems Group TU Dortmund *
* Visit us at *
* http://dbis.cs.tu-dortmund.de/cms/en/home/ *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
* OTHER DEALINGS IN THE SOFTWARE. *
* *
* Authors: *
* Maximilian Berens <maximilian.berens@tu-dortmund.de> *
* Roland Kühn <roland.kuehn@cs.tu-dortmund.de> *
* Jan Mühlig <jan.muehlig@tu-dortmund.de> *
*------------------------------------------------------------------------------*
*/
#pragma once
#include "unary_operator.h"
#include <buffer/manager.h>
#include <cstdint>
#include <table/table_disk_manager.h>
#include <table/value.h>
#include <utility>
#include <vector>
namespace beedb::execution
{
class UpdateOperator : public UnaryOperator
{
public:
UpdateOperator(concurrency::Transaction *transaction, table::Table &table,
table::TableDiskManager &table_disk_manager, buffer::Manager &buffer_manager,
std::vector<std::pair<table::Schema::ColumnIndexType, table::Value>> &&values)
: UnaryOperator(transaction), _table(table), _table_disk_manager(table_disk_manager),
_buffer_manager(buffer_manager), _new_column_values(std::move(values))
{
}
~UpdateOperator() override = default;
void open() override;
util::optional<table::Tuple> next() override;
void close() override;
[[nodiscard]] const table::Schema &schema() const override
{
return _table.schema();
}
[[nodiscard]] bool yields_data() const override
{
return false;
}
private:
table::Table &_table;
table::TableDiskManager _table_disk_manager;
buffer::Manager &_buffer_manager;
std::vector<std::pair<table::Schema::ColumnIndexType, table::Value>> _new_column_values;
};
} // namespace beedb::execution