beedb/include/execution/transaction_operator.h

125 lines
4.6 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 <concurrency/transaction.h>
#include <concurrency/transaction_callback.h>
#include <concurrency/transaction_manager.h>
namespace beedb::execution
{
class BeginTransactionOperator : public OperatorInterface
{
public:
BeginTransactionOperator(concurrency::TransactionManager &transaction_manager,
concurrency::TransactionCallback &transaction_callback)
: OperatorInterface(nullptr), _transaction_manager(transaction_manager),
_transaction_callback(transaction_callback)
{
}
~BeginTransactionOperator() override = default;
void open() override;
util::optional<table::Tuple> next() override;
void close() override;
[[nodiscard]] const table::Schema &schema() const override
{
return _schema;
}
[[nodiscard]] bool yields_data() const override
{
return false;
}
private:
const table::Schema _schema = {};
concurrency::TransactionManager &_transaction_manager;
concurrency::TransactionCallback &_transaction_callback;
};
class AbortTransactionOperator : public OperatorInterface
{
public:
AbortTransactionOperator(concurrency::TransactionManager &transaction_manager,
concurrency::Transaction *transaction,
concurrency::TransactionCallback &transaction_callback)
: OperatorInterface(transaction), _transaction_manager(transaction_manager),
_transaction_callback(transaction_callback)
{
}
~AbortTransactionOperator() override = default;
void open() override;
util::optional<table::Tuple> next() override;
void close() override;
[[nodiscard]] const table::Schema &schema() const override
{
return _schema;
}
[[nodiscard]] bool yields_data() const override
{
return false;
}
private:
const table::Schema _schema = {};
concurrency::TransactionManager &_transaction_manager;
concurrency::TransactionCallback &_transaction_callback;
};
class CommitTransactionOperator : public OperatorInterface
{
public:
CommitTransactionOperator(concurrency::TransactionManager &transaction_manager,
concurrency::Transaction *transaction,
concurrency::TransactionCallback &transaction_callback)
: OperatorInterface(transaction), _transaction_manager(transaction_manager),
_transaction_callback(transaction_callback)
{
}
~CommitTransactionOperator() override = default;
void open() override;
util::optional<table::Tuple> next() override;
void close() override;
[[nodiscard]] const table::Schema &schema() const override
{
return _schema;
}
[[nodiscard]] bool yields_data() const override
{
return false;
}
private:
const table::Schema _schema = {};
concurrency::TransactionManager &_transaction_manager;
concurrency::TransactionCallback &_transaction_callback;
};
} // namespace beedb::execution