How to add a second label to a node in Spring Data Neo4J 3.0.0 (Release)?
In Neo4J I have @NodeEntity Person
.
I would also like to add more labels, such as :USER
, :CUSTOMER
, :OWNER
, :AGENT
etc.
Seems to spring-data-neo4j:3.0.0-RELEASE
have annotation support @Labels
, but when I try to use it I get a NullPointerException
.
@NodeEntity
public class Person {
@GraphId
Long id
@Indexed(unique=true)
String email
@Labels // <- Seems this is unsupported.
private Collection<String>labels
public void addLabel(String label) {
this.labels.add(label) // <- NullPointer thrown here.
}
}
I assume this is because it is not supported yet. If this is indeed the case, then would anyone kindly provide me with an example of how to achieve the same result by updating the repository behind it, adding manual annotation @Query
to add the label?
I'm not sure how:
- Reference to the current node in the request.
- Execute cypher after calling save () method and creating node.
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If you modify your domain objects to support inheritance, SDN will infer additional labels based on the inheritance tree.
if you want more than one label, extend the parent classes and you will have the label you want.
For example, if
@NodeEntity
public class User extends Customer {
}
Creates two labels: User and: Client.
See Use @NodeEntity in interface / abstract class when using abstract classes with Neo4j.
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