public static async Task <TModel> GetOrCreateAsync <TModel, TKey>(this IMemoryCacheProvider cacheProvider,
TKey id,
Func <TKey, CacheItem, Task <TModel> > factory,
DateTimeOffset?absoluteExpiration = null)
where TModel : IModelKey <TKey>
{
if (id == null)
{
throw new ArgumentNullException(nameof(id));
}
if (factory == null)
{
throw new ArgumentNullException(nameof(factory));
}
var cacheItem = cacheProvider.ModelKeyGenerator.CreateCacheItem <TModel>(id);
if (typeof(TKey) == typeof(String))
{
if (cacheProvider.TryGetValue(cacheItem, out IModelKey <string> value))
{
return((TModel)value);
}
}
if (typeof(TKey).IsNumericType())
{
if (cacheProvider.TryGetValue(cacheItem, out IModelKey <long> value))
{
return((TModel)value);
}
}
var instance = await factory.Invoke(id, cacheItem);
return(Set(cacheProvider, id, instance, absoluteExpiration));
}
