spring data - Neo4j Same Entity Relationship persistence issue -

is possible pls advice me how go about.. doing same entity relationship..

for ex. entity(class person) relatesto entity(class person).

code:

@nodeentity  public class person  {      @graphid @generatedvalue      private long id;       @indexed(indextype = indextype.fulltext, indexname = "searchbypersonname")      private string personname;       @fetch @relatedto(type = "connects_to", direction = direction.both)      private set<connectedpersons> connectedpersons;       public connectedpersons connectsto(person endperson, string connectionproperty)      {                connectedpersons connectedpersons = new connectedpersons(this, endperson, connectionproperty);          this.connectedpersons.add(connectedpersons); //null pointer here(connectedpersons null)         return connectedpersons;      } } 

code:

@relationshipentity(type = "connected_to")  public class connectedpersons{   @graphid private long id;   @startnode private person startperson;   @endnode private person endperson;   private string connectionproperty;   public connectedpersons() { }   public connectedpersons(person startperson, person endperson, string connectionproperty) {             this.startperson = startperson; this.endperson = endperson; this.connectionproperty = connectionproperty;  } 

i trying have relationship same class.. i.e. persons connected person.. when invoke junit test :

    person 1 = new person ("one");   person 2 = new person ("two");   personservice.save(one); //works when use template.save(one)  personservice.save(two);   iterable<person> persons = personservice.findall();   (person person: persons) {  system.out.println("person name : "+person.getpersonname());  }   one.connectsto(two, "sample connection");   template.save(one); 

i null pointer when try one.connectsto(two, "prop"); please tell going wrong?

thanks in advance.

one other thing besides missing initialization of set class connectedpersons @relationshipentity. in class person using @relatedto annotation if @nodeentity. should use @relatedtovia annotation in person class instead.