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#ifndef MBGL_OFFLINE_DATABASE
#define MBGL_OFFLINE_DATABASE
#include <mbgl/storage/resource.hpp>
#include <mbgl/storage/offline.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <mbgl/util/optional.hpp>
#include <mbgl/util/constants.hpp>
#include <unordered_map>
#include <memory>
#include <string>
namespace mapbox {
namespace sqlite {
class Database;
class Statement;
}
}
namespace mbgl {
class Response;
class TileID;
class OfflineDatabase : private util::noncopyable {
public:
// Limits affect ambient caching (put) only; resources required by offline
// regions are exempt.
OfflineDatabase(const std::string& path,
uint64_t maximumCacheSize = util::DEFAULT_MAX_CACHE_SIZE);
~OfflineDatabase();
optional<Response> get(const Resource&);
uint64_t put(const Resource&, const Response&);
std::vector<OfflineRegion> listRegions();
OfflineRegion createRegion(const OfflineRegionDefinition&,
const OfflineRegionMetadata&);
void deleteRegion(OfflineRegion&&);
optional<Response> getRegionResource(int64_t regionID, const Resource&);
uint64_t putRegionResource(int64_t regionID, const Resource&, const Response&);
OfflineRegionDefinition getRegionDefinition(int64_t regionID);
OfflineRegionStatus getRegionCompletedStatus(int64_t regionID);
private:
void ensureSchema();
void removeExisting();
class Statement {
public:
explicit Statement(mapbox::sqlite::Statement& stmt_) : stmt(stmt_) {}
Statement(Statement&&) = default;
Statement(const Statement&) = delete;
~Statement();
mapbox::sqlite::Statement* operator->() { return &stmt; };
private:
mapbox::sqlite::Statement& stmt;
};
Statement getStatement(const char *);
optional<Response> getTile(const Resource::TileData&);
void putTile(const Resource::TileData&, const Response&,
const std::string&, bool compressed);
optional<Response> getResource(const Resource&);
void putResource(const Resource&, const Response&,
const std::string&, bool compressed);
uint64_t putInternal(const Resource&, const Response&, bool evict);
void markUsed(int64_t regionID, const Resource&);
const std::string path;
std::unique_ptr<::mapbox::sqlite::Database> db;
std::unordered_map<const char *, std::unique_ptr<::mapbox::sqlite::Statement>> statements;
template <class T>
T getPragma(const char *);
uint64_t maximumCacheSize;
bool evict(uint64_t neededFreeSize);
};
} // namespace mbgl
#endif
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