public async Task <IEnumerable <T> > LoadAsync(TKey key)
{
lock (_cache)
{
// Get value from the cache if it's there
if (_cache.TryGetValue(key, out var value))
{
return(value);
}
// Otherwise add to pending keys
if (!_pendingKeys.Contains(key))
{
_pendingKeys.Add(key);
}
}
var result = await DataLoaded.ConfigureAwait(false);
var rv = result[key];
if (rv == null)
{
lock (_cache)
{
_cache.TryGetValue(key, out rv);
}
}
return(rv);
}
public async Task <T> LoadAsync(TKey key)
{
lock (_cache)
{
// Get value from the cache if it's there
if (_cache.TryGetValue(key, out T cacheValue))
{
return(cacheValue);
}
// Otherwise add to pending keys
if (!_pendingKeys.Contains(key))
{
_pendingKeys.Add(key);
}
}
var result = await DataLoaded.ConfigureAwait(false);
if (result.TryGetValue(key, out T value))
{
return(value);
}
else
{
return(_defaultValue);
}
}
public async Task <Connection <T> > LoadPageAsync(PageRequest <TKey> pageRequest)
{
lock (_pendingRequests)
{
_pendingRequests.Add(pageRequest);
}
var result = await DataLoaded.ConfigureAwait(false);
return(result.TryGetValue(pageRequest.Key, out var value) ? value : default);