/// <summary>
/// Query the next data in the streaming database.
/// </summary>
/// <param name="nWait">Specfies the maximum amount of time (in ms.) to wait for data.</param>
/// <returns>A simple datum containing the data is returned.</returns>
public SimpleDatum Query(int nWait)
{
if (m_iquery.QueryType == CUSTOM_QUERY_TYPE.REAL_DOUBLE)
{
List <double[]> rgData = m_iquery.QueryRealD();
if (rgData == null || rgData.Count == 0 || rgData[0].Length == 0)
{
return(null);
}
double[] rgFullData = new double[rgData[0].Length * rgData.Count];
int nOffset = 0;
for (int i = 0; i < rgData.Count; i++)
{
Array.Copy(rgData[i], 0, rgFullData, nOffset, rgData[i].Length);
nOffset += rgData[i].Length;
}
return(new SimpleDatum(true, rgData.Count, 1, rgData[0].Length, -1, DateTime.MinValue, rgFullData.ToList(), 0, false, -1));
}
else if (m_iquery.QueryType == CUSTOM_QUERY_TYPE.REAL_FLOAT)
{
List <float[]> rgData = m_iquery.QueryRealF();
if (rgData == null || rgData.Count == 0 || rgData[0].Length == 0)
{
return(null);
}
float[] rgFullData = new float[rgData[0].Length * rgData.Count];
int nOffset = 0;
for (int i = 0; i < rgData.Count; i++)
{
Array.Copy(rgData[i], 0, rgFullData, nOffset, rgData[i].Length);
nOffset += rgData[i].Length;
}
return(new SimpleDatum(true, rgData.Count, 1, rgData[0].Length, -1, DateTime.MinValue, rgFullData.ToList(), 0, false, -1));
}
else
{
byte[] rgData = m_iquery.QueryBytes();
if (rgData == null || rgData.Length == 0)
{
return(null);
}
return(new SimpleDatum(false, rgData.Length, 1, 1, -1, DateTime.MinValue, rgData.ToList(), 0, false, -1));
}
}
