72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
// Squawk messenger.
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// Copyright (C) 2019 Yury Gubich <blue@macaw.me>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef CORE_TABLE_H
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#define CORE_TABLE_H
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#include "database.h"
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#include "serializer.h"
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class DataBase::_Table {
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friend class DataBase;
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protected:
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_Table(const std::string& name, DataBase* parent);
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virtual ~_Table();
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virtual int createTable(MDB_txn * transaction) = 0;
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virtual int drop(MDB_txn * transaction);
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public:
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virtual void drop();
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virtual uint32_t count() const;
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protected:
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MDB_dbi dbi;
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DataBase* db;
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const std::string name;
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protected:
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template <class T>
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int makeTable(MDB_txn* transaction);
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template <class T>
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static std::string toString(const T& value);
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};
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template <class K, class V>
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class DataBase::Table : public DataBase::_Table {
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friend class DataBase;
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private:
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Table(const std::string& name, DataBase* parent);
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~Table() override;
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public:
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void addRecord(const K& key, const V& value);
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void changeRecord(const K& key, const V& value);
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void removeRecord(const K& key);
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V getRecord(const K& key) const;
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private:
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Serializer<K>* keySerializer;
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Serializer<V>* valueSerializer;
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int createTable(MDB_txn* transaction) override;
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};
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#include "table.hpp"
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#endif // CORE_TABLE_H
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