/// <summary>
/// Gets the trends of the specified input channels.
/// </summary>
protected void GetTrends(ConnectedClient client, DataPacket request)
{
byte[] buffer = request.Buffer;
int index = ArgumentIndex;
int[] cnlNums = GetIntArray(buffer, ref index);
TimeRange timeRange = GetTimeRange(buffer, ref index);
int archiveBit = GetByte(buffer, ref index);
TrendBundle trendBundle = archiveHolder.GetTrends(cnlNums, timeRange, archiveBit);
List <DateTime> timestamps = trendBundle.Timestamps;
int totalPointCount = timestamps.Count;
int blockCapacity = (BufferLenght - ArgumentIndex - 16) / (8 + cnlNums.Length * 10);
int blockCount = totalPointCount > 0 ? (int)Math.Ceiling((double)totalPointCount / blockCapacity) : 1;
int pointIndex = 0;
buffer = client.OutBuf;
for (int blockNumber = 1; blockNumber <= blockCount; blockNumber++)
{
ResponsePacket response = new ResponsePacket(request, buffer);
index = ArgumentIndex;
CopyInt32(blockNumber, buffer, ref index);
CopyInt32(blockCount, buffer, ref index);
CopyInt32(totalPointCount, buffer, ref index);
int pointCount = Math.Min(totalPointCount - pointIndex, blockCapacity); // points in this block
CopyInt32(pointCount, buffer, ref index);
for (int i = 0, ptIdx = pointIndex; i < pointCount; i++, ptIdx++)
{
CopyTime(timestamps[ptIdx], buffer, ref index);
}
foreach (TrendBundle.CnlDataList trend in trendBundle.Trends)
{
for (int i = 0, ptIdx = pointIndex; i < pointCount; i++, ptIdx++)
{
CopyCnlData(trend[ptIdx], buffer, ref index);
}
}
pointIndex += pointCount;
response.BufferLength = index;
client.SendResponse(response);
}
}
/// <summary>
/// Gets the trends of the specified input channels.
/// </summary>
public TrendBundle GetTrends(int[] cnlNums, TimeRange timeRange, int archiveBit)
{
return(archiveHolder.GetTrends(cnlNums, timeRange, archiveBit));
}
