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71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#pragma once
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#include "storage/cache/storage_cache_database.h"
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#include "base/binary_guard.h"
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namespace Storage {
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namespace Cache {
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namespace details {
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struct Settings;
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} // namespace details
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class Database;
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} // namespace Cache
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class Databases;
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class DatabasePointer {
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public:
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DatabasePointer(const DatabasePointer &other) = delete;
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DatabasePointer(DatabasePointer &&other);
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DatabasePointer &operator=(const DatabasePointer &other) = delete;
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DatabasePointer &operator=(DatabasePointer &&other);
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~DatabasePointer();
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Cache::Database *get() const;
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Cache::Database &operator*() const;
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Cache::Database *operator->() const;
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explicit operator bool() const;
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private:
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friend class Databases;
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DatabasePointer(
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not_null<Databases*> owner,
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const std::unique_ptr<Cache::Database> &value);
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void destroy();
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Cache::Database *_value = nullptr;
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not_null<Databases*> _owner;
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};
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class Databases {
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public:
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DatabasePointer get(
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const QString &path,
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const Cache::details::Settings &settings);
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private:
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friend class DatabasePointer;
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struct Kept {
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Kept(std::unique_ptr<Cache::Database> &&database);
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std::unique_ptr<Cache::Database> database;
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base::binary_guard destroying;
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};
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void destroy(Cache::Database *database);
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std::map<QString, Kept> _map;
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};
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} // namespace Storage
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