GraphQL Queries and Mutations
The fields of the top-level types Query and Mutation are usually used as endpoints
for requests, much like REST API endpoints.
To make defining these endpoints easier the top-level fields are defined alongside their resolvers.
@Query('posts(offset: Int = 0, limit: Int = 25): [Post]', PostTypeDefs)
export class PostsQuery implements IResolver
{
public handle(source, {offset, limit}, context, info): Array<Post>
{
return posts.slice(offset, offset + limit);
}
}
@Mutation('postCreate(author: ID, text: String): Post', PostTypeDefs)
export class PostCreateMutation implements IResolver
{
public handle(source, {author, text}, context, info): Post
{
const post: Post = {
author,
text,
date: new Date(),
};
posts.push(post);
return post;
}
}Both @Query and @Mutation take the field definition as the first parameter
and type defs as the second parameter.