How to customize generated connection types?

[devopsix]

I am wondering what the best way for customizing the connection types generated for @connection directives would be.

Let's say I want to implement a GraphQL service matching this example from the Introduction to GraphQL which has an extra totalCount field on the connection:

query HeroComparison($first: Int = 3) {
  leftComparison: hero(episode: EMPIRE) {
    ...comparisonFields
  }
  rightComparison: hero(episode: JEDI) {
    ...comparisonFields
  }
}

fragment comparisonFields on Character {
  name
  friendsConnection(first: $first) {
    totalCount
    edges {
      node {
        name
      }
    }
  }
}

As far as I understand RelayConnectionFactory.kt, I would have to replace it entirely for adding any extra field.

Is there a smarter way than replacing RelayConnectionFactory?

[vojtapol]

Currently, the only way to achieve that is to indeed write your own type factory. You can start by copy pasting the existing RelayConnectionFactory. Moreover, you will need to choose a different directive as @connection is already taken by the existing Relay implementation.