hibernate/hibernate-ogm — pull request #426 by gunnarmorling (2014-12-03 20:37:02+00:00)
Title: OGM-618

This avoids storing nulls in association rows for MongoDB, CouchDB and the map-based dialects. Ideally, we'd have some mapping tests for this, but I couldn't get to that for now. It looks good alright from visual inspection. Neo4j does not store null properties, the null values from the query are ignored (checked that).