Read and update a mongodb document by single call - mongodb

Question

I have a collection called books.
When use browse a particular book, I get the book by id.
But I also want to increase the view count by 1 each time I read the doc.
I can use 2 commands: one to read and another to update the views counter by 1
Is there a wayy to do this by single command like findAndModify?
How to use that using CSharp driver?
Books:
{
{
"_id": "1"
"title" : "Earth Day",
"author" : "John ",
"pages" : 212,
"price" : 14.5,
"views" : 1000
},
{
"_id": "2"
"title" : "The last voyage",
"author" : "Bob",
"pages" : 112,
"price" : 10.5,
"views" : 100
}
}
I have this:
var query = Query.And(Query.EQ("_id", id));
var sortBy = SortBy.Null;
var update = Update.Inc("views", 1);
var result = Books.FindAndModify(query, sortBy, update, true);
But how do I get the matching document back?
EDIT: I got it working..
return result.GetModifiedDocumentAs<T>();
My question is this call GetModifiedDocumentAs() will hit the database again?

Answer 1

No, it won't hit the database again.
When in doubt about things like this, look at the source. It shows that the GetModifiedDocumentAs method just accesses the resulting doc from the existing Response object and casts it to the requested type.