59 lines
2.5 KiB
C
59 lines
2.5 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 "node_interface.h"
|
||
|
|
|
||
|
|
namespace beedb::plan::logical
|
||
|
|
{
|
||
|
|
class CrossProductNode final : public BinaryNode
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
CrossProductNode() : BinaryNode("Cross Product")
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
~CrossProductNode() override = default;
|
||
|
|
|
||
|
|
const Schema &check_and_emit_schema(TableMap &tables) override
|
||
|
|
{
|
||
|
|
_schema.clear();
|
||
|
|
|
||
|
|
const auto &left_schema = left_child()->check_and_emit_schema(tables);
|
||
|
|
const auto &right_schema = right_child()->check_and_emit_schema(tables);
|
||
|
|
|
||
|
|
_schema.reserve(left_schema.size() + right_schema.size());
|
||
|
|
std::copy(left_schema.begin(), left_schema.end(), std::back_inserter(_schema));
|
||
|
|
std::copy(right_schema.begin(), right_schema.end(), std::back_inserter(_schema));
|
||
|
|
return _schema;
|
||
|
|
}
|
||
|
|
|
||
|
|
[[nodiscard]] const Schema &schema() const override
|
||
|
|
{
|
||
|
|
return _schema;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
Schema _schema;
|
||
|
|
};
|
||
|
|
} // namespace beedb::plan::logical
|