public async ValueTask <bool> MoveNextAsync()
#endif
{
if (_queue.IsEmpty())
{
return(false);
}
if (skipFirst)
{
skipFirst = false;
return(true);
}
var first = _queue.Poll();
#if EFCORE2
if (await first.MoveNext(cancellationToken))
#endif
#if !EFCORE2
if (await first.MoveNextAsync())
#endif
{
_queue.Offer(first);
}
if (_queue.IsEmpty())
{
return(false);
}
_currentEnumerator = _queue.Peek();
return(true);
}
private void SetOrderEnumerator()
{
foreach (var source in _enumerators)
{
var orderStreamEnumerator = new OrderStreamMergeAsyncEnumerator <T>(_mergeContext, source);
if (orderStreamEnumerator.HasElement())
{
orderStreamEnumerator.SkipFirst();
_queue.Offer(orderStreamEnumerator);
}
}
_currentEnumerator = _queue.IsEmpty() ? _enumerators.FirstOrDefault() : _queue.Peek();
}
public NoPaginationStreamMergeEnumerator(StreamMergeContext <T> mergeContext, IEnumerable <IStreamMergeAsyncEnumerator <T> > sources)
{
_mergeContext = mergeContext;
_skip = mergeContext.Skip;
_take = mergeContext.Take;
if (_mergeContext.HasGroupQuery())
{
_enumerator = new MultiAggregateOrderStreamMergeAsyncEnumerator <T>(_mergeContext, sources);
}
else
{
_enumerator = new MultiOrderStreamMergeAsyncEnumerator <T>(_mergeContext, sources);
}
}
public OrderStreamMergeAsyncEnumerator(StreamMergeContext <T> mergeContext, IStreamMergeAsyncEnumerator <T> enumerator)
{
_mergeContext = mergeContext;
_enumerator = enumerator;
SetOrderValues();
}
