64 lines
2.7 KiB
C++
64 lines
2.7 KiB
C++
/*------------------------------------------------------------------------------*
|
|
* 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 DeleteOperator : public UnaryOperator
|
|
{
|
|
public:
|
|
DeleteOperator(concurrency::Transaction *transaction, table::Table &table,
|
|
table::TableDiskManager &table_disk_manager, buffer::Manager &buffer_manager)
|
|
: UnaryOperator(transaction), _table(table), _table_disk_manager(table_disk_manager),
|
|
_buffer_manager(buffer_manager)
|
|
{
|
|
}
|
|
~DeleteOperator() 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;
|
|
};
|
|
} // namespace beedb::execution
|