Instance-based PartialSchema

[d-exclaimation]

Note This is a lower priority change, it doesn't need to be merged right away

Changes overview

• Allow the use of instance to declare PartialSchema which is more closely aligned with how Schema is used

Reasoning

Subclassing declaration would have more boilerplate than Instance based declaration

Example

let AuthSchema = PartialSchema<Resolver, Context>(
    types: {
        Type(User.self) {
            Field("id", at: \.id)
            Field("name", at: \.name)
            Field("email", at: \.email)
            Field("orders", at: User.orders, as: [TypeReference<Order>].self)
        }
        Type(Credential.self) {
            Field("token", at: \.token)
            Field("expiresAt", at: \.expiresAt)
            Field("user", at: \.user)
        }
    },
    query: {
        Field("me", at: Resolver.me)
    },
    mutation: {
        Field("login", at: Resolver.login)
        Field("signup", at: Resolver.signup)
    }
)

let OrderSchema = PartialSchema<Resolver, Context>(
    types: {
        Type(Order.self) {
            Field("id", at: \.id)
            Field("quantity", at: \.quantity)
            Field("cost", at: \.cost)
            Field("user", at: Order.user)
            Field("status", at: Order.currentStatus, as: TypeReference<Status>?.self)
            Field("progress", at: Order.progress, as: [TypeReference<Status>].self)
        }
        Type(Status.self) {
            Field("distance", at: \.distance)
            Field("progress", at: \.progress)
            Field("order", at: Status.order)
        }
    },
    query: {
        Field("order", at: Resolver.orderById) {
            Argument("id", at: \.id)
        }
    },
    mutation: {
        Field("createOrder", at: Resolver.createOrder) {
            Argument("quantity", at: \.quantity)
        }
    }
)

let schema = try Schema.create(from: [AuthSchema, OrderSchema])

[d-exclaimation]

Also I updated the README with examples to use PartialSchema

[NeedleInAJayStack]

I saw that and I love it!

[d-exclaimation]

@NeedleInAJayStack Mind doing the release again?

[NeedleInAJayStack]

Sure, no problem