private void VisitBinaryOr(BinaryExpression b)
{
var nodes = new BinaryExpressionDenester().GetDenestedExpressions(b, ExpressionType.Or, ExpressionType.OrElse);
var values = nodes.Select(n => new BsonDocument(new BsonElementsFormatter().GetElements(n))).OfType <BsonValue>();
_elements.Add(new BsonElement("$or", new BsonArray(values)));
}
private void VisitBinaryAnd(BinaryExpression b)
{
var nodes = new BinaryExpressionDenester().GetDenestedExpressions(b, ExpressionType.And, ExpressionType.AndAlso);
var elements = nodes.SelectMany(n => new BsonElementsFormatter().GetElements(n));
var groupedElements = elements.GroupBy(x => x.Name);
foreach (var grouping in groupedElements)
{
if (grouping.Count() == 1)
{
_elements.Add(grouping.Single());
}
else
{
if (grouping.All(x => x.Value is BsonDocument))
{
_elements.Add(new BsonElement(grouping.Key, new BsonDocument(grouping.SelectMany(x => ((BsonDocument)x.Value).Elements))));
}
else
{
_elements.Add(new BsonElement("$and", new BsonArray(grouping.Select(g => new BsonDocument(g)))));
}
}
}
}