[jira] [Comment Edited] (TINKERPOP-2497) Gremlin JS Serializer always empty [{}] with valueMap(), entitypMap()

["Ben Smith (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TINKERPOP-2497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17253507#comment-17253507 ] 

Ben Smith edited comment on TINKERPOP-2497 at 12/22/20, 2:22 PM:
-----------------------------------------------------------------

Hello Stephen,
 Thanks for the quick reply. I am using AWS Neptune as the Graph DB.

Given i have a node with a label name=ben,  age=43, and gender='male'

My application finds the node by id:

 
{code:java}
g.V().has('34bb4352-996b-3415-479c-86215a0796ff').valueMap().toList().then((val)=> console.log(val));{code}
 

this outputs the following to the console:

[ Map \{ 'gender' => [ 'male' ], 'name' => [ 'ben' ], 'age' => [ 43 ] } ]

However, when sending this to the response of my express res.send(val)  - produces [{}]

Similarly, 

 
{code:java}
const map= await  g.V().has('name','ben').valueMap().toList()
console.log( JSON.stringify(map)) 
{code}
 

results in the output of [{}]

Rather than a collection. 

I am able to get an array of names if i populate a value within valueMap() But gremlin touts that i shoudl get the collection running this method. 

This also occurs not just with valueMap but with elementMap.
 The following example from the gremlin-javascript npm fails for me as it returns [{}] when serialized.

 

 
{code:java}
const findVertex = async (vertexId) =>
{ const vertex = await g.V(vertexId).elementMap().next(); return vertex.value; } 
{code}
 

Please let me know what else i may be able to provide to understand how to help or overcome this issue.


was (Author: fezec):
Hello Stephen,
Thanks for the quick reply. I am using AWS Neptune as the Graph DB.

Given i have a node with a label name=ben,  age=43, and gender='male'

My application finds the node by id:

 

g.V().has('34bb4352-996b-3415-479c-86215a0796ff').valueMap().toList().then((val)=> console.log(val));

 

this outputs the following to the console:

[ Map \{ 'gender' => [ 'male' ], 'name' => [ 'ben' ], 'age' => [ 43 ] } ]

However, when sending this to the response of my express res.send(val)  - produces [{}]

Similarly, 

const map= *await*  g.V().has(*'name'*,*'ben'*).valueMap().toList()

console.log( JSON.stringify(map)) 

results in the output of [{}]

Rather than a collection.

 

I am able to get an array of names if i populate a value within valueMap() But gremlin touts that i shoudl get the collection running this method. 


This also occurs not just with valueMap but with elementMap.
The following example from the gremlin-javascript npm fails for me as it returns [{}] when serialized.

 

const findVertex = async (vertexId) => { const vertex = await g.V(vertexId).elementMap().next(); return vertex.value; };

'

Please let me know what else i may be able to provide to understand how to help or overcome this issue.

> Gremlin JS Serializer always empty [{}] with valueMap(), entitypMap()
> ---------------------------------------------------------------------
>
>                 Key: TINKERPOP-2497
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2497
>             Project: TinkerPop
>          Issue Type: Bug
>          Components: javascript
>    Affects Versions: 3.4.9
>            Reporter: Ben Smith
>            Priority: Minor
>
> Sorry if I made this ticket incorrectly.
>  
> I've installed gremlin as indicated.
> Running such a call as 
> g.V(id).elementMap().toList(); fails to return from my client application
> output results is always [{}]
> same with  return g.V(id).valueMap().toList();
> The above calls can output to the console correctly but not be serialized.
> Other toList calls work when the type is Vector. but seem to fail with Map.
> I am running Express, against Tinkertop 3.4. 



--
This message was sent by Atlassian Jira
(v8.3.4#803005)