template<typename T>
class Resource
{
public:
    static Data<T> Create(std::string name);
    static Data<T> Get(std::string name);
    static void Free(Data<T> resource);
private:
    static bool ResourceExists(std::string name){ return resources.find(name) != resources.end(); }
    static std::map<std::string, Data<T>> resources;
};

template<typename T>
std::map<std::string, Data<T>> Resource<T>::resources;

template<typename T>
Data<T> Resource<T>::Create(std::string name)
{
    Data<T> data;
    if (ResourceExists(name))
    {
        data = Data<T>();
    }
    else
    {
        data = Data<T>::Create();
        resources.insert(std::make_pair(name, data));
    }
    return data;
}
template<typename T>
Data<T> Resource<T>::Get(std::string name)
{
    Data<T> data;
    if (ResourceExists(name))
    {
        data = resources[name];
    }
    else
    {
        File file = File::Open(name, File::READ);
        T value = ResourceFactory::Create<T>(file);
        data = Data<T>::Create(value);
    }
    return data;
}
template<typename T>
void Resource<T>::Free(Data<T> resource)
{
    resources.erase(resource->GetName());
    resource->Release();
}