public object Invoke(object obj, object root)
{
object result;
IDbRecordset reader = obj as IDbRecordset;
if (reader == null)
{
throw new ArgumentException(string.Format("Invalid type of argument: {0}", obj));
}
result = ((IDbRecordset)obj).GetValue(_field);
/*
* int idx = reader.GetOrdinal(_field);
* if (idx == -1)
* throw new Exception(String.Format("Recordset does not contain field '{0}'", _field));
* result = reader.GetValue(idx);
*/
if (result is DbEngine.DbRef)
{
result = ((DbEngine.DbRef)result).GetObject();
}
return(result);
}
public List<Segment> Build(IDbRecordset recordset)
{
var points = new List<Point>();
while (recordset.Read())
{
var dateTime = (DateTime)recordset["EndTime"];
var latitude = (double)Convert.ChangeType(recordset["Latitude"], typeof(double));
var longitude = (double)Convert.ChangeType(recordset["Longitude"], typeof(double));
var satellitesCount = (int)recordset["SatellitesCount"];
var point = new Point(dateTime, latitude, longitude, satellitesCount);
points.Add(point);
}
var builder = new TrackBuilder(Options);
return builder.Build(points);
}
public List <Segment> Build(IDbRecordset recordset)
{
var points = new List <Point>();
while (recordset.Read())
{
var dateTime = (DateTime)recordset["EndTime"];
var latitude = (double)Convert.ChangeType(recordset["Latitude"], typeof(double));
var longitude = (double)Convert.ChangeType(recordset["Longitude"], typeof(double));
var satellitesCount = (int)recordset["SatellitesCount"];
var point = new Point(dateTime, latitude, longitude, satellitesCount);
points.Add(point);
}
var builder = new TrackBuilder(Options);
return(builder.Build(points));
}
public int ExecuteCount()
{
try
{
TimeStamp.Start("ExecuteCount");
int rc = 0;
using (IDbRecordset rs = Execute())
while (rs.Next())
{
rc++;
}
return(rc);
}
finally
{
TimeStamp.Log("ExecuteCount", _text);
}
}