/// <summary>
/// Creates a filter from the list of points provided.
/// </summary>
/// <param name="listOfPointIDs">contains the list of pointIDs to include in the filter. List must support multiple enumerations</param>
/// <returns></returns>
public static MatchFilterBase <TKey, TValue> CreateFromList <TKey, TValue>(IEnumerable <ulong> listOfPointIDs)
where TKey : TimestampPointIDBase <TKey>, new()
{
MatchFilterBase <TKey, TValue> filter;
ulong maxValue = 0;
if (listOfPointIDs.Any())
{
maxValue = listOfPointIDs.Max();
}
if (maxValue < 8 * 1024 * 64) //64KB of space, 524288
{
filter = new BitArrayFilter <TKey, TValue>(listOfPointIDs, maxValue);
}
else if (maxValue <= uint.MaxValue)
{
filter = new UIntHashSet <TKey, TValue>(listOfPointIDs, maxValue);
}
else
{
filter = new ULongHashSet <TKey, TValue>(listOfPointIDs, maxValue);
}
return(filter);
}
private static MatchFilterBase <TKey, TValue> CreateFromStream <TKey, TValue>(BinaryStreamBase stream)
where TKey : TimestampPointIDBase <TKey>, new()
{
MatchFilterBase <TKey, TValue> filter;
byte version = stream.ReadUInt8();
ulong maxValue;
int count;
switch (version)
{
case 0:
return(null);
case 1:
maxValue = stream.ReadUInt64();
count = stream.ReadInt32();
if (maxValue < 8 * 1024 * 64) //64KB of space, 524288
{
filter = new BitArrayFilter <TKey, TValue>(stream, count, maxValue);
}
else
{
filter = new UIntHashSet <TKey, TValue>(stream, count, maxValue);
}
break;
case 2:
maxValue = stream.ReadUInt64();
count = stream.ReadInt32();
filter = new ULongHashSet <TKey, TValue>(stream, count, maxValue);
break;
default:
throw new VersionNotFoundException("Unknown Version");
}
return(filter);
}
