CODEWITHSUNDEEP
gremlincompletable-futuretinkerpopamazon-neptune
CdVr
CdVr

Reputation: 313

neptune drop vertex property with acknowledgement

I tried Gremlin Tinkerpop query for Amazon neptune to drop properties of Vertex. It is working fine, but couldn't get acknowledgement either TRUE / FALSE on dropping properties.

But, i could manage get boolean for updating / adding properties of the Vertex

g.V('id').properties('property_1','property_2').drop()

I'm expecting it to return TRUE / FALSE on successful query execution.

It would be more helpful if someone gives heads Up on this.

Note: Since trying CompletableFuture for Query execution, looking on boolean result on successful execution.

Upvotes: 1

Views: 983

Answers (2)

CdVr
CdVr

Reputation: 313

I had a workaround / solution on this as check if properties are there after drop on the same chain. If there is no properties, then it succeeds the dropping of properties.

Note: Traverse and check it has properties to validate!

Upvotes: 0

Kelvin Lawrence
Kelvin Lawrence

Reputation: 14371

The way to know whether or not the drop worked is whether or not the transaction succeeded or failed. If the drop fails an exception will be thrown that you can catch. If you look at the Apache TinkerPop documentation for the drop step [1] you will see that:

The drop()-step (filter/sideEffect) is used to remove element and properties from the graph (i.e. remove). It is a filter step because the traversal yields no outgoing objects.

[1] http://tinkerpop.apache.org/docs/3.4.6/reference/#drop-step

I hope that helps clarify

Upvotes: 2

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