Gremlin - 从 valueMap 中提取 T.id 和 T.label

Question

This question is related to this post that Kelvin Lawrence answered very helpfully, wanted to post it as a separate question bec the first question was answered well already.

From this query:

g.V('a2661f57-8aa7-4e5c-9c89-55cf9b7e4cf8').as('self')
.sideEffect(out('rated').store('movies')) 
.out('friended')
.group() 
.by(valueMap(true).by(unfold())) 
.by(out('rated').where(within('movies')).count()) 
.order(local) 
.by(values,desc) 
.unfold()
.select(keys)

i get this result:

1   {<T.id: 1>: 'fdc45bd3-be08-4716-b20f-b4f04987c5e0', <T.label: 4>: 'user', 'username': 'elin102dev', 'name': 'elin obrien', 'avatarUrl': 'public/avatars/fdc45bd3-be08-4716-b20f-b4f04987c5e0.jpg'}
2   {<T.id: 1>: 'bbf1b0db-68cc-41f1-8c7a-5fd77b698e39', <T.label: 4>: 'user', 'username': 'iris', 'name': 'Iris Ebert', 'avatarUrl': 'public/avatars/bbf1b0db-68cc-41f1-8c7a-5fd77b698e39.jpg'}
3   {<T.id: 1>: '34c2ea80-4f84-4652-a7c3-48ce43d9aea7', <T.label: 4>: 'user', 'username': 'iris103dev', 'name': 'iris obrien', 'avatarUrl': 'public/avatars/34c2ea80-4f84-4652-a7c3-48ce43d9aea7.jpg'}

I want to convert the T.id and T.label values in the response to simply "id" and "label". Kelvin, if you're reading this, ii tried appending the following to the query above but it returns 0 results:

.select('id', 'label', 'username', 'name', 'avatarUrl') 
    .by(T.id)
    .by(T.label)
    .by('username')
    .by('name')
    .by('avatarUrl')
    .toList()

I could use a little more help figuring this out, not having much success. Thanks in advance.

Answer 1

It is not possible to do a select(T.id) inside a query. In code if you get a map back you can access the T.id field. For a case such as this, it is better to delay fetching the properties until you finally need them. You might try rewriting the query like this.

g.V('a2661f57-8aa7-4e5c-9c89-55cf9b7e4cf8').as('self').
  sideEffect(out('rated').store('movies')). 
  out('friended').
  group(). 
    by(). 
    by(out('rated').where(within('movies')).count()). 
  order(local). 
    by(values,desc). 
    unfold().
  select(keys).
  project('id','label','username').
    by(id).
    by(label).
    by('username')