1
0
forked from blue/lmdbal
lmdbal/serializer.hpp

87 lines
2.0 KiB
C++

// Squawk messenger.
// Copyright (C) 2019 Yury Gubich <blue@macaw.me>
//
// 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 3 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 CORE_DATABASE_SERIALIZER_HPP
#define CORE_DATABASE_SERIALIZER_HPP
#include "serializer.h"
template<class T>
DataBase::Serializer<T>::Serializer() :
bytes(),
buffer(&bytes),
stream(&buffer)
{
buffer.open(QIODevice::ReadWrite);
}
template<class T>
DataBase::Serializer<T>::Serializer(const T& value) :
bytes(),
buffer(&bytes),
stream(&buffer)
{
buffer.open(QIODevice::ReadWrite);
_setValue(value);
}
template<class T>
DataBase::Serializer<T>::~Serializer() {
buffer.close();
}
template<class T>
MDB_val DataBase::Serializer<T>::setData(const T& value) {
clear();
_setData(value);
return getData();
}
template<class T>
T DataBase::Serializer<T>::deserialize(const MDB_val& value) {
clear();
bytes.setRawData((char*)value.mv_data, value.mv_size);
T result;
stream >> result;
return result;
}
template<class T>
void DataBase::Serializer<T>::_setData(const T& value) {
stream << value;
}
template<class T>
void DataBase::Serializer<T>::clear() {
if (buffer.pos() > 0) {
buffer.seek(0);
}
}
template<class T>
MDB_val DataBase::Serializer<T>::getData() {
MDB_val val;
val.mv_size = buffer.pos();
val.mv_data = (char*)bytes.data();
return val;
}
#endif //CORE_DATABASE_SERIALIZER_HPP