Question

java mongo driver has a findAndRemove method which finds some documents specified by a query and removes them.
My problem is how to find and remove specified (forexample 100) number of documents from a collection.
That would be something like

DBObject objects= db.getCollection("someCollection").findAndRemove( 100) ;

where objects is a list of deleted objects

Answer 1

findAndRemove is implemented via findAndModify, which in turn has the following limitation:

command can be used to atomically modify a document (at most one) and
return it

(from findAndModify documentation)