Drop in Netpune Gremlin Session Query

Question

Can the "drop()" query work in a Session client in Gremlin queries in Java for AWS Neptune. I have tried a few times but the "drop()" only works if I use iterate() and does not have any effect is the session client is used and query is submitted.

If it does work, it will be helpful to have some examples. It is not very clear from the documentation.

Answer 1

I tried some experiments using the Gremlin Console in "session mode". Note that the transaction will only commit once the session is closed.

$ bin/gremlin.sh

         \,,,/
         (o o)
-----oOOo-(3)-oOOo-----
plugin activated: tinkerpop.server
plugin activated: tinkerpop.utilities
plugin activated: tinkerpop.tinkergraph
gremlin> :remote connect tinkerpop.server conf/krl6w.yaml session abc-123
==>Configured xxxx-[abc-123]

gremlin> :remote console
==>All scripts will now be sent to Gremlin Server - [xxx]-[abc-123] - type ':remote console' to return to local mode

gremlin> g.V().hasLabel('airport').count()
==>3503

gremlin> g.V().hasLabel('airport').drop()

gremlin> g.V().hasLabel('airport').count()
==>0

// This ends the session and commits the transaction
gremlin> :remote close

Now to verify it worked

gremlin> :remote connect tinkerpop.server conf/krl6w.yaml
==>Configured xxxx

gremlin> :remote console
==>All scripts will now be sent to Gremlin Server - [xxxxx:8182] - type ':remote console' to return to local mode

gremlin> g.V().hasLabel('airport').count()
==>0