Is this possible to conjointly use neo4j OGM and the "raw" neo4j java driver in the same project ?
My idea is to use OGM for all "CRUD" operations, but also to have access to the power of the neo4j java driver (mainly the streamed/lazy result cursor).
Yes you can go that way.
Just be aware that the OGM session has a kind of first level cache. So if you load with OGM, then update directly through drivers, then load again the same entities with OGM, you may get stale results.
In that case you might want to use OGM session.clear().
Side note : there are plans to better support streaming in OGM 3.