Is it possible to build GraphQL query where the second part of the query depends on the result of the first one?

Question

I have a setup where I run a query on the frontend through the router (Apollo Federation Gateway) to two separate services exposing GQL endpoints - serviceA has findItems and serviceB has parseName.

Now I want to run the following query in one go:

query findMyItemDescriptionNameAndParse {
  findItems(id: 1) {
    description {
      name
    }
  }
  parseName(input: $name) {
     parsedName {
        name
     }
  }
}

Can Apollo pass the variables internally or I just have to split the query into two for such case?

Thank you.

score 1 · Accepted Answer · answered Feb 18 '23 at 02:18

Short answer: no. You'd have to run the two queries in sequence. What's preferable however is to define a different query that returns both the name and parsedName that you're looking for. Even better would be to extend the description to include a parsedName field and just write a resolver for that then you'd never need to run sequential queries.

Is it possible to build GraphQL query where the second part of the query depends on the result of the first one?

1 Answers1