How to save and retrieve nested objects in neo4j using spring data - neo4j

Question

I have a model where User will have a list of Roles and Role has a list of Permissions. However, even when i save all of them at once - with depth -1 I am unable to retrieve the child nodes from the parent nodes.
ex: user.getRoles() - 2 [role1,role2]
role1.getAssociatedFeature() - 0
But if i get the Role from the DB
Ex : findByRoleName('role1') -> [Role: role1,Display Role,associatedFeatures[2]]
User.java
#NodeEntity
public class User {
#GraphId Long id;
private String name;
private String loginUserName;
#Relationship(type="ROLE")
private Set<Role> associatedRoles = new HashSet<Role>();
}
Role.java
#NodeEntity
public class Role {
#GraphId Long id;
private String roleName;
private String displayRoleName;
#Relationship(type="ACCESS_TO")
private Set<Feature> associatedFeatures = new HashSet<Feature>();
}
Feature.java
#NodeEntity
public class Feature {
#GraphId Long id;
private String featureName;
#Relationship(type="HAS_PERMISSION")
private Set<Permission> permissions = new HashSet<Permission>();
}
#NodeEntity
public #Data class Permission {
#GraphId
Long id;
String permission;
}
I am using Spring data jpa to use the CRUD operations:
<>Repository.java - This will bydefault implement save,update,delete,find
#RepositoryRestResource()
public interface RoleRepository extends GraphRepository<Role>{...}
ServiceImpl.java
#Override
public User create(User u) {
return userRepo.save(u,-1);
}
In my Junit- I am creating a new User entity, and populating the data all the way to permission. But when i fetch the user -> i only get the roles but not the features, permission along the chain.
In the neo4j DB browser, I see that all the nodes are created with appropriate dependency. Any pointers on how to save and traverse through the graph?

Answer 1

The default load depth is 1. This means you'll get the user and the associated roles, but not the role's features or anything deeper in the graph.
You can specify the load depth if the default is not what you want:
userRepo.findOne(user.getId(), 3);
http://docs.spring.io/spring-data/neo4j/docs/current/reference/html/#_fine_grained_control_via_depth_specification