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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _PREPAREDSTATEMENT_H
#define _PREPAREDSTATEMENT_H
#include "Define.h"
#include "SQLOperation.h"
#include <future>
#include <vector>
#include <variant>
struct PreparedStatementData
{
std::variant<
bool,
uint8,
uint16,
uint32,
uint64,
int8,
int16,
int32,
int64,
float,
double,
std::string,
std::vector<uint8>,
std::nullptr_t
> data;
template<typename T>
static std::string ToString(T value);
static std::string ToString(bool value);
static std::string ToString(uint8 value);
static std::string ToString(int8 value);
static std::string ToString(std::string const& value);
static std::string ToString(std::vector<uint8> const& value);
static std::string ToString(std::nullptr_t);
};
//- Upper-level class that is used in code
class TC_DATABASE_API PreparedStatementBase
{
friend class PreparedStatementTask;
public:
explicit PreparedStatementBase(uint32 index, uint8 capacity);
virtual ~PreparedStatementBase();
void setNull(const uint8 index);
void setBool(const uint8 index, const bool value);
void setUInt8(const uint8 index, const uint8 value);
void setUInt16(const uint8 index, const uint16 value);
void setUInt32(const uint8 index, const uint32 value);
void setUInt64(const uint8 index, const uint64 value);
void setInt8(const uint8 index, const int8 value);
void setInt16(const uint8 index, const int16 value);
void setInt32(const uint8 index, const int32 value);
void setInt64(const uint8 index, const int64 value);
void setFloat(const uint8 index, const float value);
void setDouble(const uint8 index, const double value);
void setString(const uint8 index, const std::string& value);
void setStringView(const uint8 index, const std::string_view value);
void setBinary(const uint8 index, const std::vector<uint8>& value);
template <size_t Size>
void setBinary(const uint8 index, std::array<uint8, Size> const& value)
{
std::vector<uint8> vec(value.begin(), value.end());
setBinary(index, vec);
}
uint32 GetIndex() const { return m_index; }
std::vector<PreparedStatementData> const& GetParameters() const { return statement_data; }
protected:
uint32 m_index;
//- Buffer of parameters, not tied to MySQL in any way yet
std::vector<PreparedStatementData> statement_data;
PreparedStatementBase(PreparedStatementBase const& right) = delete;
PreparedStatementBase& operator=(PreparedStatementBase const& right) = delete;
};
template<typename T>
class PreparedStatement : public PreparedStatementBase
{
public:
explicit PreparedStatement(uint32 index, uint8 capacity) : PreparedStatementBase(index, capacity)
{
}
private:
PreparedStatement(PreparedStatement const& right) = delete;
PreparedStatement& operator=(PreparedStatement const& right) = delete;
};
//- Lower-level class, enqueuable operation
class TC_DATABASE_API PreparedStatementTask : public SQLOperation
{
public:
PreparedStatementTask(PreparedStatementBase* stmt, bool async = false);
~PreparedStatementTask();
bool Execute() override;
PreparedQueryResultFuture GetFuture() { return m_result->get_future(); }
protected:
PreparedStatementBase* m_stmt;
bool m_has_result;
PreparedQueryResultPromise* m_result;
};
#endif
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