src/catapult/cache/CacheStorageInclude.h

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#pragma once
#include <utility>
 
namespace catapult {
    namespace io {
        class InputStream;
        class OutputStream;
    }
}
 
namespace catapult { namespace cache {
 
    template<typename TDescriptor>
    struct CacheStorageFromDescriptor {
        using SourceType = typename TDescriptor::CacheViewType;
 
        using DestinationType = typename TDescriptor::CacheDeltaType;
 
        using KeyType = typename TDescriptor::KeyType;
 
        using ValueType = typename TDescriptor::ValueType;
    };
 
    template<typename TDescriptor>
    struct CacheStorageForBasicInsertRemoveCache : public CacheStorageFromDescriptor<TDescriptor> {
        static void LoadInto(const typename TDescriptor::ValueType& value, typename TDescriptor::CacheDeltaType& cacheDelta) {
            cacheDelta.insert(value);
        }
 
        static void Purge(const typename TDescriptor::ValueType& value, typename TDescriptor::CacheDeltaType& cacheDelta) {
            auto key = TDescriptor::GetKeyFromValue(value);
            if (cacheDelta.contains(key))
                cacheDelta.remove(key);
        }
    };
}}