LinksUniquenessValidator.h

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namespace Platform::Data::Doublets::Decorators
{
    template <typename...>
    class LinksUniquenessValidator;
    template <std::integral TLinkAddress>
    class LinksUniquenessValidator<TLinkAddress> : public DecoratorBase<TFacade, TDecorated>
    {
      public:
        LinksUniquenessValidator(ILinks<TLinkAddress>& storage) : DecoratorBase(storage) {}
 
      public:
        TLinkAddress Update(const LinkType& restriction, const LinkType& substitution)
        {
            auto constants = _constants;
            storage.EnsureDoesNotExists(substitution[constants.SourcePart], substitution[constants.TargetPart]);
            return storage.Update(restriction, substitution);
        }
    };
} // namespace Platform::Data::Doublets::Decorators