public override void Read(BinaryStreamBase stream)
{
Timestamp = stream.ReadUInt64();
PointID = stream.ReadUInt64();
TableId = stream.ReadInt32();
CollectedTime = stream.ReadUInt64();
}
/// <summary>
/// Creates a filter by reading from the stream.
/// </summary>
/// <param name="stream">the stream to read from</param>
public SeekToKey(BinaryStreamBase stream)
: this()
{
m_keyToFind.Timestamp = stream.ReadUInt64();
m_keyToFind.PointID = stream.ReadUInt64();
m_keyToFind.CopyTo(StartOfRange);
m_keyToFind.CopyTo(EndOfRange);
}
/// <summary>
/// Creates a filter by reading from the stream.
/// </summary>
/// <param name="stream">the stream to read from</param>
public FixedRange(BinaryStreamBase stream)
: this()
{
m_start = stream.ReadUInt64();
m_stop = stream.ReadUInt64();
StartOfRange.SetMin();
StartOfRange.Timestamp = m_start;
EndOfRange.SetMax();
EndOfRange.Timestamp = m_stop;
}
public unsafe override void Decode(BinaryStreamBase stream, AmiKey prevKey, AmiValue prevValue, AmiKey key, AmiValue value, out bool isEndOfStream)
{
isEndOfStream = false;
key.Timestamp = stream.ReadUInt64();
key.PointID = stream.ReadUInt64();
value.CollectedTime = stream.ReadUInt64();
value.TableId = stream.ReadInt32();
value.DataLength = stream.ReadUInt8();
stream.Read(value.Data, 0, value.DataLength);
}
/// <summary>
/// Creates a filter by reading from the stream.
/// </summary>
/// <param name="stream">the stream to read from</param>
public IntervalRanges(BinaryStreamBase stream)
: this()
{
ulong start = stream.ReadUInt64();
ulong stop = stream.ReadUInt64();
ulong mainInterval = stream.ReadUInt64();
ulong subInterval = stream.ReadUInt64();
ulong tolerance = stream.ReadUInt64();
Initialize(start, stop, mainInterval, subInterval, tolerance);
}
public override void Read(BinaryStreamBase stream)
{
CollectedTime = stream.ReadUInt64();
TableId = stream.ReadInt32();
DataLength = stream.ReadUInt8();
stream.Read(Data, 0, Data.Length);
}
/// <summary>
/// Creates a new filter backed by a <see cref="BitArray"/>.
/// </summary>
/// <param name="stream">The the stream to load from.</param>
/// <param name="pointCount">the number of points in the stream.</param>
/// <param name="maxValue">the maximum value stored in the bit array. Cannot be larger than int.MaxValue-1</param>
public ULongHashSet(BinaryStreamBase stream, int pointCount, ulong maxValue)
{
m_maxValue = maxValue;
m_points = new HashSet <ulong>();
while (pointCount > 0)
{
m_points.Add(stream.ReadUInt64());
pointCount--;
}
}
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);
}
public unsafe override void Decode(BinaryStreamBase stream, HistorianKey prevKey, HistorianValue prevValue, HistorianKey key, HistorianValue value, out bool isEndOfStream)
{
isEndOfStream = false;
uint code = stream.ReadUInt8();
byte b1;
byte b2;
byte b3;
//Compression Stages:
// Stage 1: Big Positive Float.
// Stage 2: Big Negative Float.
// Stage 3: Zero
// Stage 4: 32 bit
// Stage 5: Catch all
if (code < 0x80)
{
b1 = stream.ReadUInt8();
b2 = stream.ReadUInt8();
b3 = stream.ReadUInt8();
//If stage 1 (50% success)
key.Timestamp = prevKey.Timestamp;
key.PointID = prevKey.PointID + 1 + ((code >> 4) & 0x7);
key.EntryNumber = 0;
value.Value1 = (4u << 28) | (code & 0xF) << 24 | (uint)b1 << 16 | (uint)b2 << 8 | (uint)b3 << 0;
value.Value2 = 0;
value.Value3 = 0;
return;
}
if (code < 0xC0)
{
b1 = stream.ReadUInt8();
b2 = stream.ReadUInt8();
b3 = stream.ReadUInt8();
//If stage 2 (16% success)
key.Timestamp = prevKey.Timestamp;
key.PointID = prevKey.PointID + 1 + ((code >> 4) & 0x3);
key.EntryNumber = 0;
value.Value1 = (12u << 28) | (code & 0xF) << 24 | (uint)b1 << 16 | (uint)b2 << 8 | (uint)b3 << 0;
value.Value2 = 0;
value.Value3 = 0;
return;
}
if (code < 0xD0)
{
//If stage 3 (28% success)
key.Timestamp = prevKey.Timestamp;
key.PointID = prevKey.PointID + 1 + (code & 0xF);
key.EntryNumber = 0;
value.Value1 = 0;
value.Value2 = 0;
value.Value3 = 0;
return;
}
if (code < 0xE0)
{
//If stage 4 (3% success)
key.Timestamp = prevKey.Timestamp;
key.PointID = prevKey.PointID + 1 + (code & 0xF);
key.EntryNumber = 0;
value.Value1 = stream.ReadUInt32();
value.Value2 = 0;
value.Value3 = 0;
return;
}
//Stage 5: 2%
//Stage 5: Catch All
if ((code & 16) != 0) //T is set
{
key.Timestamp = prevKey.Timestamp + stream.Read7BitUInt64();
key.PointID = stream.Read7BitUInt64();
}
else
{
key.Timestamp = prevKey.Timestamp;
key.PointID = prevKey.PointID + stream.Read7BitUInt64();
}
if ((code & 8) != 0) //E is set)
{
key.EntryNumber = stream.Read7BitUInt64();
}
else
{
key.EntryNumber = 0;
}
if ((code & 4) != 0) //V1 is set)
{
value.Value1 = stream.ReadUInt64();
}
else
{
value.Value1 = stream.ReadUInt32();
}
if ((code & 2) != 0) //V2 is set)
{
value.Value2 = stream.Read7BitUInt64();
}
else
{
value.Value2 = 0;
}
if ((code & 1) != 0) //V3 is set)
{
value.Value3 = stream.Read7BitUInt64();
}
else
{
value.Value3 = 0;
}
}
public override void Read(BinaryStreamBase stream)
{
Timestamp = stream.ReadUInt64();
PointID = stream.ReadUInt64();
EntryNumber = stream.ReadUInt64();
}
public override void Decode(BinaryStreamBase stream, HistorianKey prevKey, HistorianValue prevValue, HistorianKey key, HistorianValue value, out bool isEndOfStream)
{
isEndOfStream = false;
byte code = stream.ReadUInt8();
if (code == 255)
{
isEndOfStream = true;
return;
}
if (code < 128)
{
if (code < 64)
{
key.Timestamp = prevKey.Timestamp;
key.PointID = prevKey.PointID ^ code;
key.EntryNumber = 0;
value.Value1 = 0;
value.Value2 = 0;
value.Value3 = 0;
}
else
{
key.Timestamp = prevKey.Timestamp;
key.PointID = prevKey.PointID ^ code ^ 64;
key.EntryNumber = 0;
value.Value1 = stream.ReadUInt32();
value.Value2 = 0;
value.Value3 = 0;
}
return;
}
if ((code & 64) != 0) //T is set
{
key.Timestamp = prevKey.Timestamp ^ stream.Read7BitUInt64();
}
else
{
key.Timestamp = prevKey.Timestamp;
}
key.PointID = prevKey.PointID ^ stream.Read7BitUInt64();
if ((code & 32) != 0) //E is set)
{
key.EntryNumber = stream.Read7BitUInt64();
}
else
{
key.EntryNumber = 0;
}
if ((code & 16) != 0) //V1 High is set)
{
value.Value1 = stream.ReadUInt64();
}
else if ((code & 8) != 0) //V1 low is set)
{
value.Value1 = stream.ReadUInt32();
}
else
{
value.Value1 = 0;
}
if ((code & 4) != 0) //V2 is set)
{
value.Value2 = stream.ReadUInt64();
}
else
{
value.Value2 = 0;
}
if ((code & 2) != 0) //V1 High is set)
{
value.Value3 = stream.ReadUInt64();
}
else if ((code & 1) != 0) //V1 low is set)
{
value.Value3 = stream.ReadUInt32();
}
else
{
value.Value3 = 0;
}
return;
}
public override void Read(BinaryStreamBase stream)
{
Value1 = stream.ReadUInt64();
Value2 = stream.ReadUInt64();
Value3 = stream.ReadUInt64();
}
