Add support for querying relationship data

[wtrocki]

Add support for querying relationships using resolvers.

[richcorbs]

If I have

type Comment {
  description: String!
  userId: ID!
}

Is there a way to get the user in a graphql comment query like this?

{
  findAllComments {
    description
    user {
      name
    }
}

Do I need to create a Comment: User resolver?

[richcorbs]

When I tried...

type Comment {
  description: String!
  user: User!
}

...it added user.commentId which is the inverse of what I intended.

[ankitjena]

Is there a way to get the user in a graphql comment query like this?

{
  findAllComments {
    description
    user {
      name
    }
}

Do I need to create a Comment: User resolver?

We are missing this and only creating user: Comment resolver. Need to do the other way too. Thanks @richcorbs for pointing this out.

[ankitjena]

@richcorbs Issue #209 is tracking this. Closing this.