69 lines
2.8 KiB
C
69 lines
2.8 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 "operator_interface.h"
|
||
|
|
#include <memory>
|
||
|
|
#include <table/schema.h>
|
||
|
|
#include <table/tuple.h>
|
||
|
|
|
||
|
|
namespace beedb::execution
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* Abstract operator that has to children (left and right)
|
||
|
|
* for operators JOIN-like operators.
|
||
|
|
*/
|
||
|
|
class BinaryOperator : public OperatorInterface
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
explicit BinaryOperator(concurrency::Transaction *transaction) : OperatorInterface(transaction)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
~BinaryOperator() override = default;
|
||
|
|
|
||
|
|
void left_child(std::unique_ptr<OperatorInterface> child)
|
||
|
|
{
|
||
|
|
_left_child = std::move(child);
|
||
|
|
}
|
||
|
|
void right_child(std::unique_ptr<OperatorInterface> child)
|
||
|
|
{
|
||
|
|
_right_child = std::move(child);
|
||
|
|
}
|
||
|
|
|
||
|
|
[[nodiscard]] const std::unique_ptr<OperatorInterface> &left_child() const
|
||
|
|
{
|
||
|
|
return _left_child;
|
||
|
|
}
|
||
|
|
[[nodiscard]] const std::unique_ptr<OperatorInterface> &right_child() const
|
||
|
|
{
|
||
|
|
return _right_child;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
[[nodiscard]] table::Tuple combine(const table::Schema &new_schema, const table::Tuple &left,
|
||
|
|
const table::Tuple &right) const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::unique_ptr<OperatorInterface> _left_child;
|
||
|
|
std::unique_ptr<OperatorInterface> _right_child;
|
||
|
|
};
|
||
|
|
} // namespace beedb::execution
|