GraphQL Code Item

A GraphQL Code Item is a code item for GraphQL composed of GraphQL statements (for a GraphQL language).

• Example(s):
  • a GraphQL Coding Example.
  • …
• Counter-Example(s):
  • SQL Code.
• See: Python Code.

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References

2023

• chat.openai.com
  • Q: provide some examples of GraphQL code
  • A: Certainly! Here are a few examples of GraphQL code:

# A simple query that retrieves a list of users
query {
 users {
   name
   email
 }
}

# A query that retrieves a specific user by ID, and includes the user's posts
query {
 user(id: "123") {
   name
   email
   posts {
     title
     body
   }
 }
}

# A mutation that creates a new post
mutation {
 createPost(title: "My New Post", body: "This is the body of my new post.") {
   id
   title
   body
 }
}

# A subscription that listens for new comments on a specific post
subscription {
 commentAdded(postId: "456") {
   body
   author {
     name
   }
 }
}

• Q: Write a formal specifications for a GraphQL based microservice for defining the various roles within the system, such as investigator, sponsor, or participant.
• A: Here is a possible formal specification for a GraphQL-based microservice for defining the various roles within a system:

type Query {
 roles: [Role]
 role(id: ID!): Role
}

type Mutation {
 createRole(name: String!, description: String): Role
 updateRole(id: ID!, name: String, description: String): Role
 deleteRole(id: ID!): Boolean
}

type Role {
 id: ID!
 name: String!
 description: String
 users: [User]
}

type User {
 id: ID!
 name: String!
 email: String!
}

• This specification defines a GraphQL API for a microservice that allows querying a list of roles and individual roles by their ID. It also exposes mutations for creating, updating, and deleting roles, and includes a list of users for each role.

  The name field for a role represents the name of the role, such as "investigator", "sponsor", or "participant". The description field is optional and can be used to provide additional details about the role.

  The users field is a list of users that are associated with the role. A user can have multiple roles, so this field allows you to see all the roles that a user belongs to.

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