GraphQL learning

Wallet P2P

type Wallet {
    alias: String! @id
    balance: Float!
    ins: [P2P!] @hasInverse(field: "to")
    outs: [P2P!] @hasInverse(field: "from")
}

type P2P {
    id: ID!
    from: Wallet!
    to: Wallet!
    amount: Float!
}

/* *************************** */

mutation Create2Wallets {
  walletA: addWallet(input: {alias: "a", balance: 100}) {
    numUids
    wallet {
      alias
      balance
    }
  }
  walletB: addWallet(input: {alias: "b", balance: 100}) {
    numUids
    wallet {
      alias
      balance
    }
  }
}

mutation CreateP2P($sender, ) {
  addP2P(input: {from: {alias: "a"}, to: {alias: "b"}, amount: 3}) {
    p2P {
      id
      from {
        alias
        balance
      }
      to {
        alias
        balance
      }
    }
  }
  sender: updateWallet(input: {filter: {alias: {eq: "a"}}, set: {balance: 97}}) {
    wallet {
      balance
    }
  }
  receiver: updateWallet(input: {filter: {alias: {eq: "a"}}, set: {balance: 103}}) {
    wallet {
      balance
    }
  }
}

/****/
fragment infoWalletBalance on Wallet {
  alias
  balance
}
query getBalances($walletA: String!, $walletB: String!) {
  walletA: getWallet(alias: $walletA) {
    ...infoWalletBalance
  }
  walletB: getWallet(alias: $walletB) {
    ...infoWalletBalance
  }
}

Sample: Product, User, Review

type Product  {
	productID: ID! 
	name: String @search(by:[term]) 
	reviews: [Review] @hasInverse(field:about) 
}

type Customer  {
	username: String! @search(by:[hash,regexp]) @id
	reviews: [Review] @hasInverse(field:by) 
}

type Review  {
	id: ID! 
	about: Product! 
	by: Customer! 
	comment: String @search(by:[fulltext]) 
	rating: Int @search 
}

Sample: Person, Post, Comment

type Person {
  username: String!
  likedPost: [Post]
  likesComments: [Comment]
  authoredPosts: [Post]
  authoredComments: [Comment]
}

type Post {
  id: ID
  title: String!
  date: DateTime!
  author: Person!
  comments: [Comment]
  likedBy: [Person]
}

type Comment {
  id: ID
  text: String!
  datetime: DateTime!
  author: Person!
  onPost: Post
  replyTo: Comment
  hasReplies: [Comment]
  likedBy: [Person]
}