hibernate/hibernate-ogm — pull request #95 by gscheibel (2012-06-01 16:40:47+00:00)
Title: Ogm 174 Composite id fail on MongoDB: MongoDBDialect only takes the first id column into account and force _id

it puts all the `@Id` field into `_id`.
There is no option which allow to say : "I want to use `_id` as an internal mongodb field, and map the `@Id` field(s) as a regular mongodb field".
This option could be added later.