public IChunkWriter <T> CreateChunkForMerge(
IChunkReference <T> leftChunk,
IChunkReference <T> rightChunk)
{
var totalSize = leftChunk.TotalSize + rightChunk.TotalSize;
var totalCount = leftChunk.Count + rightChunk.Count;
return(CreateChunkForMerge(totalSize, totalCount));
}
protected IChunkReference <T> Merge(
IChunkReference <T> left,
IChunkReference <T> right,
ChunkStack <T> chunkStack)
{
using (var chunkWriter = chunkStack.CreateChunkForMerge(left, right))
{
foreach (var value in _sortJoin.Join(left.GetValue(), right.GetValue()))
{
chunkWriter.Write(value);
}
return(chunkWriter.Complete());
}
}
protected void PushToStackRecursively(IChunkReference <T> chunkReference)
{
var currentStack = _chunkStack;
var otherStack = GetOtherChunkStack(_chunkStack);
while (currentStack.LastChunkLength == chunkReference.Count &&
(!_onlyMemoryMerge || (currentStack.LastChunkMemorySize > 0 && chunkReference.MemorySize > 0)))
{
var previousChunkLength = otherStack.LastChunkLength;
var previousChunkMemorySize = otherStack.LastChunkMemorySize;
chunkReference = Merge(chunkReference, currentStack.Pop(), otherStack);
if (previousChunkLength == chunkReference.Count &&
(!_onlyMemoryMerge || (previousChunkMemorySize > 0 && chunkReference.MemorySize > 0)))
{
currentStack = otherStack;
otherStack = GetOtherChunkStack(currentStack);
chunkReference = currentStack.Pop();
}
}
}
