Is there a way to map an object graph with #Query? - spring-data-neo4j

Question

I'm am trying to migrate my SDN3 embedded configuration to using SDN 3.3.0 with a Neo4j instance in server mode (communicating via the REST API then).
When the DB was embedded making a lot of small hits to the DB was not a big deal as Neo4j is capable of handling this kind of queries super fast.
However now that I run my Neo4j separately from my application (ie. in server mode) making a lot of small queries is not advisable because of the network overhead.
User user = userRespository.findOne(123);
user.fetch(user.getFriends());
user.fetch(user.getManager());
user.fetch(user.getAgency());
This will trigger quite a few queries, especially if I want to get, not a single user, but a list of users.
Can I use the #Query annotation and fetch the user and the related entities and map it into an User object?
I was thinking of something like this:
#Query("MATCH (u:User)-[r:FRIEND]->(f) RETURN u,r,f"
Is such a thing possible with Spring Data Neo4j? Will it be possible with Spring Data Neo4j 4?

Answer 1

You can define a class for query result using the #QueryResult directive and let the method for the query return an object of that class, i.e.:
#QueryResult
public interface UserWithFriends {
#ResultColumn("u")
User getUser();
#ResultColumn("f")
List<User> friends();
}
#Query("MATCH (u:User)-[:FRIEND]->(f) WHERE u.name={name} RETURN u,f")
UserWithFriends getUserByName(#Param("name") String name);