java - Count in Spring Data MongoDB repository

Question

I wonder if there's any mechanism to use count in Spring Data MongoDB repository with @Query annotation? I would love to receive the number of documents that I have without having to get all of them.

Basically, the equivalent of this in Java:

db.test.find({"type":"foo"}).count 

Answer 1

Another way to do this using MongoRepository query templates:

public interface MyRepository extends MongoRepository<MyClass, String> {
    Long countByLastname(String lastname);
}

See http://docs.spring.io/spring-data/mongodb/docs/current/reference/html/#repositories.query-methods.details