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#ifndef OSM2PGSQL_NODE_PERSISTENT_CACHE_HPP

#define OSM2PGSQL_NODE_PERSISTENT_CACHE_HPP

/**

* SPDX-License-Identifier: GPL-2.0-or-later

* This file is part of osm2pgsql (https://osm2pgsql.org/).

* For a full list of authors see the git log.

#include <memory>

#include <string>

#include <osmium/index/map/dense_file_array.hpp>

#include <osmium/osm/location.hpp>

#include "osmtypes.hpp"

class node_persistent_cache_t

{

public:

node_persistent_cache_t(std::string file_name, bool create_file,

bool remove_file);

~node_persistent_cache_t() noexcept;

node_persistent_cache_t(node_persistent_cache_t const &) = delete;

node_persistent_cache_t &

operator=(node_persistent_cache_t const &) = delete;

node_persistent_cache_t(node_persistent_cache_t &&) = delete;

node_persistent_cache_t &operator=(node_persistent_cache_t &&) = delete;

void set(osmid_t id, osmium::Location location);

osmium::Location get(osmid_t id) const noexcept;

/// The number of locations stored.

std::size_t size() const { return m_index->size(); }

/// Return the approximate number of bytes used for internal storage.

std::size_t used_memory() const { return m_index->used_memory(); }

private:

using index_t =

osmium::index::map::DenseFileArray<osmium::unsigned_object_id_type,

osmium::Location>;

std::string m_file_name;

int m_fd = -1;

std::unique_ptr<index_t> m_index;

bool m_remove_file;

}; // class node_persistent_cache_t

#endif // OSM2PGSQL_NODE_PERSISTENT_CACHE_HPP