Feature request: Batching Client GraphQL Queries

[koenpunt]

A lot of graphql server implementations have support for batch requests.

A batch request is a request with an array of graphql spec objects as body, it would look something like this;

[
  {
    "query": "query FirstQuery { ... }",
    "variables": {}
  },
  {
    "query": "query SecondQuery { ... }",
    "variables": {}
  }
]

And the response would be;

[
  {
    "data": { ... },
    "errors": null
  },
  {
    "data": null,
    "errors": [ ... ]
  }
]

Queries would be executed sequentially, so if the first is a mutation, the second will work with the updated data of the first.

Batching is described in full in this article on the apollo website: https://www.apollographql.com/blog/apollo-client/performance/batching-client-graphql-queries/

I could work on this if this is something you would like to see in the library.

[koenpunt]

Related: #108

[bclozel]

We've discussed this issue and we're siding with the GraphQL Java team here: there's nothing in the spec for this right now. Also, even if we meant to support it anyway, we would only do so on the client side as we can't implement it on the server side.

I'm closing this issue for now, to be re-evaluated if the GraphQL Java issue is reconsidered.