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first thoughts about cache

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Blue 2022-09-20 20:16:48 +03:00
parent 2f34fa69e8
commit a613eaed27
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GPG key ID: 9B203B252A63EE38
6 changed files with 205 additions and 7 deletions
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// 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 DATABASE_CACHE_H
#define DATABASE_CACHE_H
#include "database.h"
#include "table.h"
#include <map>
#include <set>
template <class K, class V>
class DataBase::Cache : public DataBase::Table<K, V> {
friend class DataBase;
enum class Mode {
nothing,
size,
full
};
protected:
Cache(const std::string& name, DataBase* parent);
~Cache() override;
public:
virtual void addRecord(const K& key, const V& value) override;
virtual void changeRecord(const K& key, const V& value) override;
virtual void removeRecord(const K& key) override;
virtual V getRecord(const K& key) const override;
//virtual uint32_t count() const;
//virtual void drop();
protected:
Mode mode;
std::map<K, V>* cache;
std::set<K>* abscent;
};
#include "cache.hpp"
#endif // DATABASE_CACHE_H