private static object ReadRows(DbDataReader rdr)
{
int nFields = rdr.FieldCount;
var key2ndx = new Dictionary <string, int>(StringComparer.OrdinalIgnoreCase);
var lstUsedFields = new List <int>(nFields);
int iStartTimeField = -1;
int iEndTimeField = -1;
for (int i = 0; i < nFields; i++)
{
var key = rdr.GetName(i);
if (string.Compare(key, nameof(START_TIME), StringComparison.InvariantCultureIgnoreCase) == 0)
{
iStartTimeField = i; continue;
}
else if (iStartTimeField >= 0 && (
string.Compare(key, "end_time__dt", StringComparison.InvariantCultureIgnoreCase) == 0 ||
string.Compare(key, nameof(END_TIME), StringComparison.InvariantCultureIgnoreCase) == 0
))
{
iEndTimeField = i; continue;
}
key2ndx.Add(key, lstUsedFields.Count);
lstUsedFields.Add(i);
}
var usedFields = lstUsedFields.ToArray();
int nUsedFields = usedFields.Length;
var lst = new OPs.ListOf <IIndexedDict>();
if (iEndTimeField >= 0)
{
var values = new object[nFields];
while (rdr.Read())
{
rdr.GetValues(values);
var endTime = values[iEndTimeField];
var vals = new object[nUsedFields];
var dtBeg = (DateTime)values[iStartTimeField];
var dtEnd = (endTime == DBNull.Value) ? DateTime.MaxValue : (DateTime)endTime;
if (dtBeg == dtEnd)
{
dtBeg = dtEnd;
}
//vals[0] = TimedObject.Timed(dtBeg, dtEnd, values[0]);
for (int i = 0; i < nUsedFields; i++)
{
vals[i] = TimedObject.Timed(dtBeg, dtEnd, values[usedFields[i]]);
}
lst.Add(new ValuesDictionary(vals, key2ndx, dtBeg, dtEnd));
}
}
else if (iStartTimeField >= 0)
{
var values = new object[nFields];
object[] prevs = null;
var prevTime = DateTime.MinValue;
while (rdr.Read())
{
rdr.GetValues(values);
var time = (DateTime)values[iStartTimeField];
if (prevs != null)
{
var dtBeg = prevTime;
var dtEnd = (Cmp.CmpKeys(prevs[0], values[0]) == 0) ? time : DateTime.MaxValue;
if (dtBeg == dtEnd)
{
continue;
}
for (int i = 0; i < nUsedFields; i++)
{
prevs[i] = TimedObject.Timed(dtBeg, dtEnd, prevs[i]);
}
lst.Add(new ValuesDictionary(prevs, key2ndx, dtBeg, dtEnd));
}
prevTime = time;
var vals = new object[nUsedFields];
for (int i = 0; i < nUsedFields; i++)
{
vals[i] = values[usedFields[i]];
}
prevs = vals;
}
if (prevs != null)
{
for (int i = 0; i < nUsedFields; i++)
{
prevs[i] = TimedObject.Timed(prevTime, DateTime.MaxValue, prevs[i]);
}
lst.Add(new ValuesDictionary(prevs, key2ndx, prevTime, DateTime.MaxValue));
}
}
else
{
System.Diagnostics.Trace.Assert(nFields == nUsedFields);
while (rdr.Read())
{
var values = new object[nFields];
rdr.GetValues(values);
for (int i = values.Length - 1; i >= 0; i--)
{
values[i] = Minimize(values[i]);
}
lst.Add(ValuesDictionary.New(values, key2ndx));
}
}
#if OCP_LOG
using (var writer = System.IO.File.AppendText("OraConnPool.log"))
{
writer.WriteLine(string.Join("\t", key2ndx.Keys));
foreach (var vals in lst)
{
writer.WriteLine(string.Join("\t", vals.ValuesList));
}
writer.Flush();
}
#endif
return(lst.ToArray());
}