[orientdb] Using gremlin to get all the child vertex of a class.

[smita padhy]

Hi All,
I have a db model which follows OrientDB oops concept. I am using gremlin
to query the db. If i use following code i am able to get all the children
of the class test.


OrientDB orientDB = new
OrientDB("remote:localhost","root","root",OrientDBConfig.defaultConfig());
ODatabasePool pool = new ODatabasePool(orientDB,"OOPSDemo","root","root");
try (ODatabaseSession db = pool.acquire()) {
ORecordIteratorClass<ODocument> cls = db.browseClass("test");
Iterator<ODocument> itr = cls.iterator();
while(itr.hasNext())
{
ODocument v = itr.next();
System.out.println("class name"+v.getClassName());
System.out.println("id"+v.getIdentity());
System.out.println("json"+v.toJSON());
}

}
pool.close();
orientDB.close();

But when i use gremlin i am unable to get all the children -

List<Vertex> edgeList = g.traversal().V().hasLabel("test").bothV().toList();

i just have vertex and no edges. I am trying to do a POC to see if we can
achieve the model designed in neo4j using orient db oops.

Please let me know if i am missing something in gremlin.


Regards
Smita

[Fabrice Martellucci]

hey,

im beginner me too but i dont see the bothE

see doc :
https://orientdb.com/docs/3.0.x/sql/SQL-Traverse.html

Vertex to all edges Using bothE()

no ?

Post by smita padhy
Hi All,
I have a db model which follows OrientDB oops concept. I am using
gremlin to query the db. If i use following code i am able to get all the
children of the class test.
OrientDB orientDB = new
OrientDB("remote:localhost","root","root",OrientDBConfig.defaultConfig());
ODatabasePool pool = new ODatabasePool(orientDB,"OOPSDemo","root","root");
try (ODatabaseSession db = pool.acquire()) {
ORecordIteratorClass<ODocument> cls = db.browseClass("test");
Iterator<ODocument> itr = cls.iterator();
while(itr.hasNext())
{
ODocument v = itr.next();
System.out.println("class name"+v.getClassName());
System.out.println("id"+v.getIdentity());
System.out.println("json"+v.toJSON());
}
}
pool.close();
orientDB.close();
But when i use gremlin i am unable to get all the children -
List<Vertex> edgeList =
g.traversal().V().hasLabel("test").bothV().toList();
i just have vertex and no edges. I am trying to do a POC to see if we can
achieve the model designed in neo4j using orient db oops.
Please let me know if i am missing something in gremlin.
Regards
Smita
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