public object Combine(object value)
{
if (!(value is IJSONDocument))
{
throw new Exception("At MaxDataCombiner: Document needs to be in IJSONDocument format");
}
IJSONDocument document = (IJSONDocument)value;
IJSONDocument updateDoc = new JSONDocument();
foreach (var attribute in _attributes)
{
object value1 = document[_userDefinedName];
object value2 = _document[_userDefinedName];
int comparer;
if (value1 is IComparable)
{
comparer = JSONComparer.Compare((IComparable)value1, value2);
}
else
{
comparer = JsonWrapper.Wrap(value1).CompareTo(JsonWrapper.Wrap(value2));
}
if (comparer > 0)
{
updateDoc.Add(_userDefinedName, value1);
}
}
JsonDocumentUtil.Update(_document, updateDoc);
//_document.Update(updateDoc);
return(_document);
}
public UpdateResult <JSONDocument> UpdateDocument(JSONDocument update)
{
UpdateResult <JSONDocument> result = new UpdateResult <JSONDocument>();
CacheItem item;
if (_documentCache.TryGetValue(new DocumentKey(update.Key), out item))
{
result.OldDocument = item.Document.Clone() as JSONDocument;
JsonDocumentUtil.Update(item.Document, update);
//_documentCache[update.Key].Document.Update(update);
result.RowId = item.Metadata.RowId;
result.NewDocument = item.Document.Clone() as JSONDocument;
}
return(result);
}
public object Combine(object value)
{
if (!(value is IJSONDocument))
{
throw new Exception("At AverageDataCombiner: Document needs to be in IJSONDocument format");
}
bool isUpdateApplicable = false;
IJSONDocument document = (IJSONDocument)value;
IJSONDocument updateDoc = new JSONDocument();
foreach (var attribute in _attributes)
{
IJSONDocument sumAndCount = new JSONDocument();
if (document.GetAttributeDataType(_userDefinedName) == ExtendedJSONDataTypes.Array)
{
if (_document.Contains("$" + _userDefinedName) && _document.GetAttributeDataType("$" + _userDefinedName) == ExtendedJSONDataTypes.Array)
{
double[] sumAndCountDoc = document.GetArray <double>(_userDefinedName);
double sum = sumAndCountDoc[0];
double count = sumAndCountDoc[1];
double[] existingSumAndCount = _document.GetArray <double>("$" + _userDefinedName);
double sum1 = existingSumAndCount[0];
double count1 = existingSumAndCount[1];
double combinedSum = sum + sum1;
double combinedCount = count + count1;
sumAndCountDoc[0] = combinedSum;
sumAndCountDoc[1] = combinedCount;
updateDoc.Add("$" + _userDefinedName, sumAndCountDoc);
updateDoc.Add(_userDefinedName, combinedSum / combinedCount);
isUpdateApplicable = true;
}
}
}
if (isUpdateApplicable)
{
JsonDocumentUtil.Update(_document, updateDoc);
}
return(_document);
}
public object Combine(object value)
{
if (!(value is IJSONDocument))
{
throw new Exception("At SumDataCombiner: Document needs to be in IJSONDocument format");
}
IJSONDocument document = (IJSONDocument)value;
IJSONDocument updateDoc = new JSONDocument();
foreach (var attribute in _attributes)
{
double value1 = document.GetAsDouble(_userDefinedName);
double value2 = _document.GetAsDouble(_userDefinedName);
updateDoc.Add(_userDefinedName, value1 + value2);
}
JsonDocumentUtil.Update(_document, updateDoc);
//_document.Update(updateDoc);
return(_document);
}
public bool MoveNext()
{
if (!_closed)
{
if (_combiners.Count < 1)
{
throw new Exception("DataCombiner is not defined for Group By Operation");
}
if (_current == null && _lastUnSentElement == null) // True first time only
{
if (_dataSelector.MoveNext())
{
_lastUnSentElement = (ISetElement)_dataSelector.Current;
}
else
{
_closed = true;
return(false);
}
}
if (_lastUnSentElement == null)
{
_closed = true;
return(false);
}
// bool found = false;
_current = _lastUnSentElement;
_lastUnSentElement = null;
foreach (IDataCombiner dataCombiner in _combiners)
{
dataCombiner.Reset();
_current.Value = dataCombiner.Initialize(_current.Value) as IJSONDocument;
}
while (_dataSelector.MoveNext())
{
_lastUnSentElement = (ISetElement)_dataSelector.Current;
if (_comparer.Compare(_current.Value, _lastUnSentElement.Value) == 0)
{
//JSONDocumentComparer jdocComparer = (JSONDocumentComparer)_comparer;
//foreach (string field in jdocComparer.FieldNamesGroupBy) // Can be optimized for better performance. Will do it later if required
// _current.Value.Remove(field);
foreach (IDataCombiner dataCombiner in _combiners)
{
JsonDocumentUtil.Update(_current.Value, (IJSONDocument)dataCombiner.Combine(_lastUnSentElement.Value));
// _current.Value.Update((IJSONDocument)dataCombiner.Combine(_lastUnSentElement.Value));
}
_lastUnSentElement = null;
}
else
{
return(true);
}
}
return(true);
}
return(false);
}
