Adding a list as property value

[Amit Chandak]

Hi,

    Is it possible to have the property value to be a list. I am using 3.3.1 Gremlin Server with Neo4j plugin. Looked at this thread, but this is not working for me

https://groups.google.com/forum/#!msg/gremlin-users/6TCIe5moUgg/I7haYbuxMoUJ

gremlin> v = g.V().hasLabel("achandak-org/USERS/Alice")

gremlin> v.setProperty("type",["USERS", "USERS-NEW"])

Has this changed in latest gremlin?

Amit

[Robert Dale]

If we look at Neo4j graph.features() we can see that neo4j doesn't support lists but only arrays. Thus, cast to array[].

gremlin> graph  = Neo4jGraph.open('/tmp/nerfo')

==>neo4jgraph[community single [/tmp/nerfo]]

==>graphtraversalsource[neo4jgraph[community single [/tmp/nerfo]], standard]

gremlin> graph.addVertex(label, "achandak-org/USERS/Alice", "type",["USERS", "USERS-NEW"] as String[] )

==>v[0]

gremlin> graph.tx().commit()

==>null

gremlin> g.V().valueMap(true)

==>[label:achandak-org/USERS/Alice,id:0,type:[[USERS, USERS-NEW]]]

Also, it is preferred to use the traversal API to do it all in one shot.

gremlin> g.V().hasLabel("achandak-org/USERS/Alice").property("type",["USERS", "USERS-NEW"] as String[])

==>v[0]

gremlin> g.tx().commit()

==>null

gremlin> g.V().valueMap(true)

==>[label:achandak-org/USERS/Alice,id:0,type:[[USERS, USERS-NEW]]]

[Amit Chandak]

Awesome, thanks Robert

[Stephen Mallette]

The oldest issue currently in TinkerPop:

https://issues.apache.org/jira/browse/TINKERPOP-21

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[Amit Chandak]

Hi Robert,

              How can i query if the array contains a particular value? For eg

g.addV('amit').property('group', ['Dev', 'Arch'] as String[])

==>v[40]

gremlin> g.V(40).properties('group')

==>vp[group->[Ljava.lang.Strin...]

gremlin> g.V(40).properties('group').hasValue('Dev')

gremlin> g.V(40).properties('group').hasValue('Dev')

On Friday, March 16, 2018 at 5:28:31 AM UTC-7, Robert Dale wrote:

[Robert Dale]

Perhaps not efficient, but can be done:

g.V().where(values('group').unfold().where(is('Dev')))

Robert Dale

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