public static BsonDocument FlattenMapReduceOutput(this BsonDocument doc)
{
BsonDocument ret = new BsonDocument();
var idIsDoc = doc.GetValue("_id", 0).IsBsonDocument;
var valueIsDoc = doc.GetValue("value", 0).IsBsonDocument;
if (idIsDoc)
{
BsonDocument docId = doc.GetValue("_id").AsBsonDocument;
foreach (var el in docId.Elements)
{
ret.Set(el.Name, BsonHelper.Get(docId, el.Name));
}
}
else
{
ret.Set("_id", doc.GetValue("_id"));
}
if (valueIsDoc)
{
BsonDocument docValue = doc.GetValue("value").AsBsonDocument;
foreach (var el in docValue.Elements)
{
ret.Set(el.Name, BsonHelper.Get(docValue, el.Name));
}
}
else
{
ret.Set("value", doc.GetValue("value", 0));
}
return(ret);
}
public static BsonValue Get(this BsonDocument doc, string fieldName)
{
try
{
string[] fields = fieldName.Split(new string[] { "." }, StringSplitOptions.RemoveEmptyEntries);
if (fields.Length == 1)
{
return(doc.GetValue(fieldName));
}
else
{
var newindex = String.Join(".", fields.Skip(1).ToArray());
return(BsonHelper.Get(doc.GetValue(fields[0]).AsBsonDocument, newindex));
}
}
catch (Exception e)
{
return(BsonNull.Value);
}
}