private IMongoQuery WrapQuery()
{
BsonDocument formattedReadPreference = null;
if (_serverInstance.InstanceType == MongoServerInstanceType.ShardRouter &&
_readPreference.ReadPreferenceMode != ReadPreferenceMode.Primary)
{
BsonArray tagSetsArray = null;
if (_readPreference.TagSets != null)
{
tagSetsArray = new BsonArray();
foreach (var tagSet in _readPreference.TagSets)
{
var tagSetDocument = new BsonDocument();
foreach (var tag in tagSet)
{
tagSetDocument.Add(tag.Name, tag.Value);
}
tagSetsArray.Add(tagSetDocument);
}
}
if (tagSetsArray != null || _readPreference.ReadPreferenceMode != ReadPreferenceMode.SecondaryPreferred)
{
formattedReadPreference = new BsonDocument
{
{ "mode", MongoUtils.ToCamelCase(_readPreference.ReadPreferenceMode.ToString()) },
{ "tags", tagSetsArray, tagSetsArray != null } // optional
};
}
}
if (_cursor.Options == null && formattedReadPreference == null)
{
return(_cursor.Query);
}
else
{
var query = (_cursor.Query == null) ? (BsonValue) new BsonDocument() : BsonDocumentWrapper.Create(_cursor.Query);
var wrappedQuery = new QueryDocument
{
{ "$query", query },
{ "$readPreference", formattedReadPreference, formattedReadPreference != null }, // only if sending query to a mongos
};
if (_cursor.Options != null)
{
wrappedQuery.Merge(_cursor.Options);
}
return(wrappedQuery);
}
}
private IMongoQuery WrapQuery()
{
if (cursor.Options == null)
{
return(cursor.Query);
}
else
{
var query = (cursor.Query == null) ? (BsonValue) new BsonDocument() : BsonDocumentWrapper.Create(cursor.Query);
var wrappedQuery = new QueryDocument("$query", query);
wrappedQuery.Merge(cursor.Options);
return(wrappedQuery);
}
}
