/// <summary>
/// Gets a set of compressed values
/// </summary>
/// <param name="inclusiveStartTimestamp">The start of the values to get</param>
/// <param name="exclusiveEndTimestamp">The exclusive end of the values to get</param>
/// <returns>A compressed data block of values</returns>
public DataBlock[] GetCompressedValues(DateTime inclusiveStartTimestamp, DateTime exclusiveEndTimestamp)
{
var dataBlocks = new List<DataBlock>();
if (Values != null)
{
var orderedKeyValuePairs = Values.Where(x => x.Key >= inclusiveStartTimestamp && x.Key < exclusiveEndTimestamp).OrderBy(x => x.Key).ToArray();
var i = 0;
while (i < orderedKeyValuePairs.Length)
{
var dataBlock = new DataBlock
{
DataInterval = _owner.Owner.DataInterval,
StartTime = orderedKeyValuePairs[i].Key
};
var values = new List<float> { orderedKeyValuePairs[i].Value };
var j = 0;
while (i + j + 1 < orderedKeyValuePairs.Length &&
orderedKeyValuePairs[i + j + 1].Key - orderedKeyValuePairs[i + j].Key ==
new TimeSpan(0, dataBlock.DataInterval, 0))
{
values.Add(orderedKeyValuePairs[i + j + 1].Value);
j++;
}
dataBlock.Values = values.ToArray();
dataBlocks.Add(dataBlock);
i += j + 1;
}
}
return dataBlocks.ToArray();
}
/// <summary>
/// Adds a block of compressed values to the list of values
/// </summary>
/// <param name="values">The data block to add</param>
public void AddCompressedValues(DataBlock[] values)
{
if(values == null)
return;
foreach (var block in values)
{
for (var i = 0; i < block.Values.Length; i++)
{
Values[block.StartTime.AddMinutes(i * block.DataInterval)] = block.Values[i];
}
}
}
