public IEnumerator <BsonDocument> GetEnumerator()
{
AggregateResult result;
if (_immediateExecutionResult != null)
{
result = _immediateExecutionResult;
_immediateExecutionResult = null;
}
else
{
result = _collection.RunAggregateCommand(_operations, _options);
}
if (result.CursorId != 0)
{
var connectionProvider = new ServerInstanceConnectionProvider(result.ServerInstance);
var readerSettings = new BsonBinaryReaderSettings
{
Encoding = _collection.Settings.ReadEncoding ?? MongoDefaults.ReadEncoding,
GuidRepresentation = _collection.Settings.GuidRepresentation
};
return(new CursorEnumerator <BsonDocument>(
connectionProvider,
_collection.FullName,
result.ResultDocuments,
result.CursorId,
_options.BatchSize ?? 0,
0,
readerSettings,
BsonDocumentSerializer.Instance,
null));
}
else if (result.OutputNamespace != null)
{
var ns = result.OutputNamespace;
var firstDot = ns.IndexOf('.');
var databaseName = ns.Substring(0, firstDot);
var collectionName = ns.Substring(firstDot + 1);
var database = _collection.Database.Server.GetDatabase(databaseName);
var collectionSettings = new MongoCollectionSettings {
ReadPreference = ReadPreference.Primary
};
var collection = database.GetCollection <BsonDocument>(collectionName, collectionSettings);
return(collection.FindAll().GetEnumerator());
}
else if (result.ResultDocuments != null)
{
return(result.ResultDocuments.GetEnumerator());
}
else
{
throw new NotSupportedException("Unexpected response to aggregate command.");
}
}
public AggregateQueryResult(
MongoCollection collection,
IEnumerable <BsonDocument> operations,
MongoAggregateOptions options,
AggregateResult immediateExecutionResult)
{
_collection = collection;
_operations = operations; // TODO: make a defensive copy?
_options = options; // TODO: make a defensive copy?
_immediateExecutionResult = immediateExecutionResult;
}
private static ITrackerReportResults ToMongoAggregationResult(IReportSpecification specification,
AggregateResult result)
{
const string utcDateKey = "UtcDateTime";
const string totalKey = "_Total";
const string occurrenceKey = "_Occurrence";
int count = result.ResultDocuments.Count();
List<string> names =
result.ResultDocuments.First().Names.Where(x => !(x == utcDateKey || x == "_id")).ToList();
var results = new MongoTrackerResults(specification);
foreach (BsonDocument document in result.ResultDocuments)
{
BsonDocument dateTime = document[utcDateKey].AsBsonDocument;
long total = document[totalKey].ToInt64();
long occurrence = document[occurrenceKey].ToInt64();
DateTime utcDateTime = ConvertDateTimeDocumentToDateTime(dateTime);
IAggregationResult trackerResult = results.AddAggregationResult(utcDateTime, occurrence, total);
foreach (string key in names)
{
string fullyQualifiedName = key.GetFullyQualifiedNameFromFormattedString();
BsonValue measurementResult = document[key];
IMeasurement measurement =
specification.Counters.FirstOrDefault(x => x.FullyQualifiedPropertyName == fullyQualifiedName);
if (measurement != null)
trackerResult.AddMeasurementResult(measurement, measurementResult.ToString());
}
}
return results;
}
private static ITrackerReportResults ToMongoAggregationResult(IReportSpecification specification,
AggregateResult queryResults)
{
const string utcDateKey = "UtcDateTime";
const string totalKey = "_Total";
const string occurrenceKey = "_Occurrence";
const string KEY_FILTER = "KeyFilter";
const string ID_KEY = "_id";
const string TYPE_KEY = "Type";
var results = new MongoTrackerResults(specification);
if (! queryResults.ResultDocuments.Any())
return results;
int count = queryResults.ResultDocuments.Count();
List<string> names =
queryResults.ResultDocuments.First().Names.Where(x => !(x == utcDateKey || x == "_id")).ToList();
foreach (BsonDocument document in queryResults.ResultDocuments)
{
BsonDocument dateTime = document[utcDateKey].AsBsonDocument;
long total = document[totalKey].ToInt64();
long occurrence = document[occurrenceKey].ToInt64();
string typeName = document[ID_KEY][TYPE_KEY].AsString;
string keyFilter = document[ID_KEY][KEY_FILTER].ToString();
DateTime utcDateTime = ConvertDateTimeDocumentToDateTime(dateTime);
IAggregationBuildableResult trackerResult = results.AddAggregationResult(utcDateTime, typeName, keyFilter, occurrence, total);
var relevantNames = names.Where(x => x.GetFullyQualifiedNameFromFormattedString().StartsWith(typeName));
foreach (string key in relevantNames )
{
string fullyQualifiedName = key.GetFullyQualifiedNameFromFormattedString();
BsonValue measurementResult = document[key];
IMeasurement measurement =
specification.Counters.FirstOrDefault(x => x.FullyQualifiedPropertyName == fullyQualifiedName);
if (measurement != null)
trackerResult.AddMeasurementResult(measurement, measurementResult.ToString());
}
}
return results;
}
