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EclipseLink/FAQ/NoSQL/MongoDB
EclipseLink's support for MongoDB includes:
- Mapping of @Entity for root and @Embeddable for nested data
- Mappings of type @Basic, @Embedded, @ElementCollection, @ManyToOne, @OneToOne, @OneToMany, @ManyToMany
- Inheritance
- Optimistic locking
- Generated values, OIDs
- CRUD operations (persist, merge, find, remove)
- JPQL and Criteria API queries,
- sub-selects, group by, and certain functions are not supported
- JPA Query options firstResult, maxResults, fetchSize
- MongoDB query options read-preference, write-concern, options
- Native queries (through MongoDB's command language)