private void WriteBuf(ulong[] buf, int id)
{
Array.Sort(buf);
var name = GetName(id);
SpatialData.WriteSequence(buf, name);
FileWritten(id, 0);
}
private void Merge(int level, int[] fileIds, int resultFileId)
{
var source = CreateMergedSource(fileIds);
SpatialData.WriteSequence(source, GetName(resultFileId));
FileWritten(resultFileId, level);
foreach (var fileId in fileIds)
{
File.Delete(GetName(fileId));
}
}
private IEnumerable <ulong> CreateMergedSource(int[] fileIds)
{
var sources = fileIds.Select(id => SpatialData.ReadSequence(GetName(id))).ToList();
while (sources.Count > 1)
{
var newSources = new List <IEnumerable <ulong> >();
for (var i = 0; i < sources.Count; i += 2)
{
if (i + 1 < sources.Count)
{
newSources.Add(MergeSorted(sources[i], sources[i + 1]));
}
else
{
newSources.Add(sources[i]);
}
}
sources = newSources;
}
return(sources[0]);
}