internal override void WrapPartitionedStream <TKey>(
PartitionedStream <TSource, TKey> inputStream, IPartitionedStreamRecipient <TSource> recipient, bool preferStriping, QuerySettings settings)
{
int partitionCount = inputStream.PartitionCount;
if (ParallelEnumerable.SinglePartitionMode)
{
Debug.Assert(partitionCount == 1);
}
// Generate the shared data.
Shared <int> sharedEmptyCount = new Shared <int>(0);
CountdownEvent sharedLatch = new CountdownEvent(partitionCount - 1);
PartitionedStream <TSource, TKey> outputStream =
new PartitionedStream <TSource, TKey>(partitionCount, inputStream.KeyComparer, OrdinalIndexState);
for (int i = 0; i < partitionCount; i++)
{
outputStream[i] = new DefaultIfEmptyQueryOperatorEnumerator <TKey>(
inputStream[i], _defaultValue, i, partitionCount, sharedEmptyCount, sharedLatch, settings.CancellationState.MergedCancellationToken);
}
recipient.Receive(outputStream);
}
internal override void WrapPartitionedStream <TKey>(PartitionedStream <TSource, TKey> inputStream, IPartitionedStreamRecipient <TSource> recipient, bool preferStriping, QuerySettings settings)
{
int partitionCount = inputStream.PartitionCount;
Shared <int> sharedEmptyCount = new Shared <int>(0);
CountdownEvent sharedLatch = new CountdownEvent(partitionCount - 1);
PartitionedStream <TSource, TKey> partitionedStream = new PartitionedStream <TSource, TKey>(partitionCount, inputStream.KeyComparer, this.OrdinalIndexState);
for (int i = 0; i < partitionCount; i++)
{
partitionedStream[i] = new DefaultIfEmptyQueryOperatorEnumerator <TSource, TKey>(inputStream[i], this.m_defaultValue, i, partitionCount, sharedEmptyCount, sharedLatch, settings.CancellationState.MergedCancellationToken);
}
recipient.Receive <TKey>(partitionedStream);
}
