graphql/src/Language/GraphQL/Type/Schema.hs

38 lines
1.4 KiB
Haskell

{- This Source Code Form is subject to the terms of the Mozilla Public License,
v. 2.0. If a copy of the MPL was not distributed with this file, You can
obtain one at https://mozilla.org/MPL/2.0/. -}
-- | This module provides a representation of a @GraphQL@ Schema in addition to
-- functions for defining and manipulating schemas.
module Language.GraphQL.Type.Schema
( Schema(..)
, Type(..)
) where
import qualified Language.GraphQL.Type.Definition as Definition
import qualified Language.GraphQL.Type.In as In
import qualified Language.GraphQL.Type.Out as Out
-- | These are all of the possible kinds of types.
data Type m
= ScalarType Definition.ScalarType
| EnumType Definition.EnumType
| ObjectType (Out.ObjectType m)
| InputObjectType In.InputObjectType
| InterfaceType (Out.InterfaceType m)
| UnionType (Out.UnionType m)
deriving Eq
-- | A Schema is created by supplying the root types of each type of operation,
-- query and mutation (optional). A schema definition is then supplied to the
-- validator and executor.
--
-- __Note:__ When the schema is constructed, by default only the types that
-- are reachable by traversing the root types are included, other types must
-- be explicitly referenced.
data Schema m = Schema
{ query :: Out.ObjectType m
, mutation :: Maybe (Out.ObjectType m)
, subscription :: Maybe (Out.ObjectType m)
}