How to use Promise.all in graphql resolver for neo4j? - neo4j

Question

I have multiple user nodes (around 45 users) and I want to return the total users count as well as the User's details too in a single query. (Similar to How to design the following resolver for GraphQL server?)
My schema:
type User {
ID: Int
name: String
}
type Query {
users: [User]
}
And after running the resolver for users query, I want to pull the total count as well as the users details too like below:
{
"data": {
"users": {
"total": 45
"users": [
{
"ID": 1,
"name": "User A"
},
{
"ID": 2,
"name": "User B"
},
...
]
}
But I am confused how to use Promise.all in neo4j. I tried to look how the promise works in neo4j but I did not find any desired info.
So, could you please let me know how should I write my resolver for this case ? Any help would be appreciable !!

Answer 1

Using Promise.all is not different in neo4j. Promise.all is from javascript. To write resolver you can do following:
let countQuery = "MATCH(n:User) RETURN count(n) as count;";
let userQuery = "MATCH(u:User) RETURN u;";
return Promise.all([
dbSession().run(countQuery, params),
dbSession().run(userQuery, params)
]).then((data) => {
return {
total: data[0].records.map(record => {return record.get('count')}
users: data[1].records.map(record => {return record.get('u')}
}
})
In your schema type you can change it to following:
type User {
ID: Int
name: String
}
type PagedData {
total: Int,
users: [User]
}
type Query {
users: PagedData
}