private string[] varNames; // Name of the variable, NOT it's dsName in the file
#endregion Fields
#region Constructors
internal ValueExtractor( string[] names, FetchData[] values )
{
this.varNames = names;
// Set timestamps
tPos = new int[values.Length];
timestamps = new long[values.Length][];
dsValues = new double[values.Length][][];
for (int i = 0; i < timestamps.Length; i++)
{
if ( values[i] != null )
{
timestamps[i] = values[i].Timestamps;
dsValues[i] = values[i].Values;
}
}
}
internal ValueExtractor Fetch( RrdDb rrd, long startTime, long endTime )
{
long rrdStep = rrd.RrdDef.Step;
FetchData[] result = new FetchData[datasources.Length];
string[] names = new string[numSources];
int tblPos = 0;
for (int i = 0; i < datasources.Length; i++)
{
if ( datasources[i].Count > 0 )
{
// Set the list of ds names
string[] dsNames = new string[ datasources[i].Count ];
string[] vNames = new string[ datasources[i].Count ];
for (int j = 0; j < dsNames.Length; j++ )
{
string[] spair = (string[]) datasources[i][j];
dsNames[j] = spair[0];
vNames[j] = spair[1];
}
// Fetch datasources
FetchRequest request = rrd.CreateFetchRequest( cfNames[i], startTime, endTime + rrdStep);
request.SetFilter(dsNames);
FetchData data = request.FetchData();
for (int j = 0; j < vNames.Length; j++)
names[ data.GetDsIndex(dsNames[j]) + tblPos ] = vNames[j];
tblPos += dsNames.Length;
result[i] = data;
}
}
return new ValueExtractor( names, result );
}
