IStorage.h

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#ifndef ISTORAGE_H
#define ISTORAGE_H
 
#include <memory>
 
template <typename Key, typename Data>
class IStorage {
public:
    virtual ~IStorage() = default;
 
    virtual void store(const Key& key, std::shared_ptr<Data> data) = 0;
 
    virtual void assign(const Key& key, std::shared_ptr<Data> data) = 0;
 
    virtual void store_or_assign(const Key& key, std::shared_ptr<Data> data) = 0;
 
    virtual bool contains(const Key& key) const = 0;
 
    virtual std::shared_ptr<Data> retrieve(const Key& key) = 0;
 
    virtual void remove(const Key& key) = 0;
};
 
 
#endif // ISTORAGE_H