Java API for MongoDB

Question

What is in your experience a good Java API for MongoDB?

I am searching for something with annotation based mapping of Java POJOs to MongoDB resources and a decent query abstraction layer.

Answer 1

Try Morphia http://code.google.com/p/morphia/

It works really well (haven't encountered any problems with it), eventhough it's still pre-1.0.

Answer 2

The Spring data framework might be an alternative

http://static.springsource.org/spring-data/data-document/docs/current/reference/html/#mongo.core

Objects look like this

@Document
public class Person {

  @Id
  private ObjectId id;

  @Indexed
  private Integer ssn;

  private String firstName;

  @Indexed
  private String lastName;

}

Querying can be done via automagical Repository interfaces, or with mongoTemplate which looks like this:

List<Person> result = mongoTemplate.find(query(where("age").lt(50).and("accounts.balance").gt(1000.00d)), Person.class);