v1= g.V().hasLabel('Vertex1').has('id', '08f0b5d7-5fed-4d00-875d-49cad4d0e9bd').next()
v2= g.V().hasLabel('Vertex2').has('id', '08f0b5d7-5fed-4d00-875d-49cad4d0e9b1').next()
e1 = v1.addEdge('Edge1', v2, T.id, UUID.fromString('18f0b5d7-5fed-4d00-875d-49cad4d0e9b1'), 'date', '2019-06-06')
How can I return the two vertices and the edge in the result list?
It's worth bearing in mind that the new Core graph engine does not support calling 'Vertex#addEdge' and you will get a message: Edge additions not supported.
You should use something like this to add edges:
g.addV('person').property('name', 'bob').as('person').
addV('software').property('name', 'Studio').as('software').
addE('created').from('person').to('software').as('created')
The advantage of the above is that it doesn't require a read before write and will be much faster. This will also work in `Classic` graphs.
For your purposes you can the use 'select' to get back the original elements:
g.addV('person').property('name', 'bob').as('person').
addV('software').property('name', 'Studio').as('software').
addE('created').from('person').to('software').as('created').
select('person','software', 'created')
==>{person=v[person:bob#64], software=v[software:Studio#05], created=e[person:bob#64->created#96->software:Studio#05][person:bob#64-created->software:Studio#05]}
But the read is important in this example, because I want to create an edge between two already existing vertices.
How this would be solved for the new Core Graph Engine?
Thanks for choosing DataStax! Just a friendly note since we're all new here but this is really a "comment" rather than an "answer". Just a friendly advice for those who come across "answers" in the future. Cheers! :)
But the read is important in this example, because I want to create an edge between two already existing vertices.
How this would be solved for the new Core Graph Engine?
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