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;
}
public void TestAggregateQueryWithCursor()
{
if (_server.BuildInfo.Version >= new Version(2, 1, 0))
{
_collection.RemoveAll();
_collection.DropAllIndexes();
_collection.Insert(new BsonDocument("x", 1));
_collection.Insert(new BsonDocument("x", 2));
_collection.Insert(new BsonDocument("x", 3));
_collection.Insert(new BsonDocument("x", 3));
var operations = new BsonDocument[]
{
new BsonDocument("$group", new BsonDocument { { "_id", "$x" }, { "count", new BsonDocument("$sum", 1) } })
};
var options = new MongoAggregateOptions();
if (_server.BuildInfo.Version >= new Version(2, 5, 2))
{
options.OutputMode = AggregateOutputMode.Cursor;
options.BatchSize = 1;
}
var query = _collection.AggregateQuery(operations, options);
var results = query.ToList();
var dictionary = new Dictionary<int, int>();
foreach (var result in results)
{
var x = result["_id"].AsInt32;
var count = result["count"].AsInt32;
dictionary[x] = count;
}
Assert.AreEqual(3, dictionary.Count);
Assert.AreEqual(1, dictionary[1]);
Assert.AreEqual(1, dictionary[2]);
Assert.AreEqual(2, dictionary[3]);
}
}