public FieldObject Terminate()
{
Dictionary <FieldObject, FieldObject> resultCollection = new Dictionary <FieldObject, FieldObject>(groupedStates.Count);
if (elementPropertyProjectionIndex >= 0)
{
foreach (FieldObject key in groupedStates.Keys)
{
List <FieldObject> projectFields = new List <FieldObject>();
foreach (var rawRecord in groupedStates[key])
{
FieldObject fo = rawRecord[elementPropertyProjectionIndex];
if (fo is PropertyField)
{
PropertyField pf = fo as PropertyField;
projectFields.Add(new StringField(pf.PropertyValue, pf.JsonDataType));
}
else
{
projectFields.Add(fo);
}
}
resultCollection[key] = new CollectionField(projectFields);
}
}
else
{
foreach (KeyValuePair <FieldObject, List <RawRecord> > pair in groupedStates)
{
FieldObject key = pair.Key;
List <RawRecord> aggregatedRecords = pair.Value;
groupedSourceOp.ResetState();
aggregateOp.ResetState();
foreach (RawRecord record in aggregatedRecords)
{
tempSourceOp.ConstantSource = record;
groupedSourceOp.Next();
}
RawRecord aggregateTraversalRecord = aggregateOp.Next();
FieldObject aggregateResult = aggregateTraversalRecord?.RetriveData(0);
if (aggregateResult == null)
{
return(null);
}
resultCollection[key] = aggregateResult;
}
}
return(new MapField(resultCollection));
}
public void ResetState()
{
offset = -1;
containerOp.ResetState();
}
public override RawRecord Next()
{
if (!State())
{
return(null);
}
RawRecord r = null;
while (inputOp.State() && (r = inputOp.Next()) != null)
{
FieldObject groupByKey = groupByKeyFieldIndex >= 0
? new StringField(r[groupByKeyFieldIndex].ToValue)
: groupByKeyFunction.Evaluate(r);
if (!groupedStates.ContainsKey(groupByKey))
{
groupedStates.Add(groupByKey, new List <RawRecord>());
}
groupedStates[groupByKey].Add(r);
}
Dictionary <FieldObject, FieldObject> resultCollection = new Dictionary <FieldObject, FieldObject>(groupedStates.Count);
if (elementPropertyProjectionIndex >= 0)
{
foreach (FieldObject key in groupedStates.Keys)
{
List <FieldObject> projectFields = new List <FieldObject>();
foreach (var rawRecord in groupedStates[key])
{
FieldObject fo = rawRecord[elementPropertyProjectionIndex];
if (fo is PropertyField)
{
PropertyField pf = fo as PropertyField;
projectFields.Add(new StringField(pf.PropertyValue, pf.JsonDataType));
}
else
{
projectFields.Add(fo);
}
}
resultCollection[key] = new CollectionField(projectFields);
}
}
else
{
foreach (KeyValuePair <FieldObject, List <RawRecord> > pair in groupedStates)
{
FieldObject key = pair.Key;
List <RawRecord> aggregatedRecords = pair.Value;
groupedSourceOp.ResetState();
aggregateOp.ResetState();
foreach (RawRecord record in aggregatedRecords)
{
tempSourceOp.ConstantSource = record;
groupedSourceOp.Next();
}
RawRecord aggregateTraversalRecord = aggregateOp.Next();
FieldObject aggregateResult = aggregateTraversalRecord?.RetriveData(0);
if (aggregateResult == null)
{
Close();
return(null);
}
resultCollection[key] = aggregateResult;
}
}
RawRecord resultRecord = new RawRecord();
for (int i = 0; i < carryOnCount; i++)
{
resultRecord.Append((FieldObject)null);
}
resultRecord.Append(new MapField(resultCollection));
Close();
return(resultRecord);
}