Spring Data Neo4j custom query list params not use converter - spring-data-neo4j

Question

NodeEntity:
#NodeEntity(label = "User")
public class UserNode {
#GraphId
private Long _gid;
#Index(unique = true, primary = true)
#Convert(ObjectIdConverter.class)
private ObjectId id;
}
Converter:
public class ObjectIdConverter implements AttributeConverter<ObjectId, String>{
#Override
public String toGraphProperty(ObjectId value) {
return ObjectIdUtils.compressed(value);
}
#Override
public ObjectId toEntityAttribute(String value) {
return ObjectIdUtils.uncompress(value);
}
}
Repository:
public interface UserNodeRepository extends GraphRepository<UserNode> {
#Query("MATCH (user:User) WHERE user.id IN {0} RETURN user")
List<UserNode> findByIdIn(List<ObjectId> ids);
}
UserNodeRepository#findByIdIn is custom query. but the request parameter directly convert to json without using ObjectIdConverter.
Log:
o.n.o.drivers.bolt.request.BoltRequest : Request: MATCH (user:User) WHERE user.id IN {0} RETURN user with params {0=[{timestamp=1500442853, machineIdentifier=11302907, processIdentifier=11906, counter=4709865, time=1500442853000, date=1500442853000, timeSecond=1500442853}, {timestamp=1500445335, machineIdentifier=11302907, processIdentifier=11906, counter=4709946, time=1500445335000, date=1500445335000, timeSecond=1500445335}, {timestamp=1500447522, machineIdentifier=11302907, processIdentifier=11906, counter=4710014, time=1500447522000, date=1500447522000, timeSecond=1500447522}, {timestamp=1500448399, machineIdentifier=11302907, processIdentifier=11906, counter=4710092, time=1500448399000, date=1500448399000, timeSecond=1500448399}]}
Is this the SDN expectation or what concepts have I lost?

Answer 1

This is not possible for finders with custom #Query. There is no way for OGM to know that your parameter relates to a property with #Convert annotation (the method name is not used at all). To solve this convert to your property type manually instead and use that as a parameter:
#Query("MATCH (user:User) WHERE user.id IN {0} RETURN user")
List<UserNode> findByIdIn(List<String> ids);
However this works fine for derived finders - OGM knows the field, and the #Convert annotation with the right converter, from the method name.
Example with single parameter:
List<UserNode> findById(ObjectId id);
Unfortunately there seems to be a bug for the IN operator and a collection parameter with:
// doesn't work
List<UserNode> findByIdIn(List<ObjectId> ids);
I have created a jira issue.