private void AddElementWithValue(Expression value)
{
var memberMap = _lastField == null ? null : _lastField.MemberMap;
var bsonValue = new BsonValueFormatter().GetValue(memberMap, value);
AddElementWithValue(bsonValue);
}
protected override Expression VisitBinary(BinaryExpression node)
{
string operandName = null;
switch (node.NodeType)
{
case ExpressionType.And:
case ExpressionType.AndAlso:
VisitBinaryAnd(node);
return(node);
case ExpressionType.Or:
case ExpressionType.OrElse:
VisitBinaryOr(node);
return(node);
case ExpressionType.Equal:
break;
case ExpressionType.GreaterThan:
operandName = "$gt";
break;
case ExpressionType.GreaterThanOrEqual:
operandName = "$gte";
break;
case ExpressionType.LessThan:
operandName = "$lt";
break;
case ExpressionType.LessThanOrEqual:
operandName = "$lte";
break;
case ExpressionType.NotEqual:
operandName = "$ne";
break;
}
VisitPredicate(node.Left);
var value = new BsonValueFormatter().GetValue(_lastField.MemberMap, node.Right);
if (operandName == null) //equals
{
AddElementWithValue(value);
}
else
{
AddElementWithValue(new BsonDocument(operandName, value));
}
return(node);
}