long pk1Val = ((Number) row.get(pk1)).longValue();
long pk2Val = ((Number) row.get(pk2)).longValue();
Node n1 = db.getNodeById(pk1Val);
Node n2 = db.getNodeById(pk2Val);
Relationship r = n1.createRelationshipTo(n2, relationshipType);
Neo4JRelationshipErsatz ret = new Neo4JRelationshipErsatz(entity, r);
Ersatz.copy(row, ret);
return ret;
}