forked from OSS/graphql
Deprecate Language.GraphQL.Execute.Schema
It is not a schema (at least not a complete one), but a resolver list, and the resolvers should be provided by the user separately, because the schema can originate from a GraphQL document. Schema name should be free to provide a data type for the real schema later.
This commit is contained in:
parent
c1943c1979
commit
22313d05df
@ -6,7 +6,12 @@ All notable changes to this project will be documented in this file.
|
||||
- Minimal documentation for all public symbols.
|
||||
|
||||
### Deprecated
|
||||
- Language.GraphQL.AST.FragmentName. Replaced with Language.GraphQL.AST.Name.
|
||||
- `Language.GraphQL.AST.FragmentName`. Replaced with Language.GraphQL.AST.Name.
|
||||
- `Language.GraphQL.Execute.Schema` - It is not a schema (at least not a
|
||||
complete one), but a resolver list, and the resolvers should be provided by
|
||||
the user separately, because the schema can originate from a GraphQL
|
||||
document. `Schema` name should be free to provide a data type for the real
|
||||
schema later.
|
||||
|
||||
## [0.5.0.0] - 2019-08-14
|
||||
### Added
|
||||
|
||||
@ -5,32 +5,31 @@ module Language.GraphQL
|
||||
) where
|
||||
|
||||
import Control.Monad.IO.Class (MonadIO)
|
||||
import qualified Data.Text as T
|
||||
|
||||
import qualified Data.Aeson as Aeson
|
||||
import Text.Megaparsec (parse)
|
||||
|
||||
import Data.List.NonEmpty (NonEmpty)
|
||||
import qualified Data.Text as T
|
||||
import Language.GraphQL.Error
|
||||
import Language.GraphQL.Execute
|
||||
import Language.GraphQL.Parser
|
||||
import Language.GraphQL.Schema
|
||||
import qualified Language.GraphQL.Schema as Schema
|
||||
import Text.Megaparsec (parse)
|
||||
|
||||
import Language.GraphQL.Error
|
||||
|
||||
-- | Takes a 'Schema' and text representing a @GraphQL@ request document.
|
||||
-- If the text parses correctly as a @GraphQL@ query the query is
|
||||
-- executed according to the given 'Schema'.
|
||||
--
|
||||
-- Returns the response as an @Aeson.@'Aeson.Value'.
|
||||
graphql :: MonadIO m => Schema m -> T.Text -> m Aeson.Value
|
||||
-- | If the text parses correctly as a @GraphQL@ query the query is
|
||||
-- executed using the given 'Schema.Resolver's.
|
||||
graphql :: MonadIO m
|
||||
=> NonEmpty (Schema.Resolver m) -- ^ Resolvers.
|
||||
-> T.Text -- ^ Text representing a @GraphQL@ request document.
|
||||
-> m Aeson.Value -- ^ Response.
|
||||
graphql = flip graphqlSubs $ const Nothing
|
||||
|
||||
-- | Takes a 'Schema', a variable substitution function and text
|
||||
-- representing a @GraphQL@ request document. If the text parses
|
||||
-- correctly as a @GraphQL@ query the substitution is applied to the
|
||||
-- query and the query is then executed according to the given 'Schema'.
|
||||
--
|
||||
-- Returns the response as an @Aeson.@'Aeson.Value'.
|
||||
graphqlSubs :: MonadIO m => Schema m -> Subs -> T.Text -> m Aeson.Value
|
||||
graphqlSubs schema f =
|
||||
either parseError (execute schema f)
|
||||
-- | If the text parses correctly as a @GraphQL@ query the substitution is
|
||||
-- applied to the query and the query is then executed using to the given
|
||||
-- 'Schema.Resolver's.
|
||||
graphqlSubs :: MonadIO m
|
||||
=> NonEmpty (Schema.Resolver m) -- ^ Resolvers.
|
||||
-> Schema.Subs -- ^ Variable substitution function.
|
||||
-> T.Text -- ^ Text representing a @GraphQL@ request document.
|
||||
-> m Aeson.Value -- ^ Response.
|
||||
graphqlSubs schema f
|
||||
= either parseError (execute schema f)
|
||||
. parse document ""
|
||||
|
||||
@ -1,7 +1,6 @@
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
|
||||
-- | This module provides the function to execute a @GraphQL@ request --
|
||||
-- according to a 'Schema'.
|
||||
-- | This module provides functions to execute a @GraphQL@ request.
|
||||
module Language.GraphQL.Execute
|
||||
( execute
|
||||
, executeWithName
|
||||
@ -9,51 +8,53 @@ module Language.GraphQL.Execute
|
||||
|
||||
import Control.Monad.IO.Class (MonadIO)
|
||||
import qualified Data.Aeson as Aeson
|
||||
import Data.List.NonEmpty (NonEmpty(..))
|
||||
import qualified Data.List.NonEmpty as NE
|
||||
import Data.List.NonEmpty (NonEmpty((:|)))
|
||||
import Data.Text (Text)
|
||||
import qualified Data.Text as Text
|
||||
import qualified Language.GraphQL.AST as AST
|
||||
import qualified Language.GraphQL.AST.Core as AST.Core
|
||||
import qualified Language.GraphQL.AST.Transform as Transform
|
||||
import Language.GraphQL.Error
|
||||
import Language.GraphQL.Schema (Schema)
|
||||
import qualified Language.GraphQL.Schema as Schema
|
||||
|
||||
-- | Takes a 'Schema', a variable substitution function ('Schema.Subs'), and a
|
||||
-- @GraphQL@ 'document'. The substitution is applied to the document using
|
||||
-- 'rootFields', and the 'Schema''s resolvers are applied to the resulting fields.
|
||||
-- | The substitution is applied to the document, and the resolvers are applied
|
||||
-- to the resulting fields.
|
||||
--
|
||||
-- Returns the result of the query against the 'Schema' wrapped in a /data/ field, or
|
||||
-- errors wrapped in an /errors/ field.
|
||||
-- Returns the result of the query against the schema wrapped in a /data/
|
||||
-- field, or errors wrapped in an /errors/ field.
|
||||
execute :: MonadIO m
|
||||
=> Schema m
|
||||
-> Schema.Subs
|
||||
-> AST.Document
|
||||
=> NonEmpty (Schema.Resolver m) -- ^ Resolvers.
|
||||
-> Schema.Subs -- ^ Variable substitution function.
|
||||
-> AST.Document -- @GraphQL@ document.
|
||||
-> m Aeson.Value
|
||||
execute schema subs doc =
|
||||
maybe transformError (document schema Nothing) $ Transform.document subs doc
|
||||
where
|
||||
transformError = return $ singleError "Schema transformation error."
|
||||
|
||||
-- | Takes a 'Schema', operation name, a variable substitution function ('Schema.Subs'),
|
||||
-- and a @GraphQL@ 'document'. The substitution is applied to the document using
|
||||
-- 'rootFields', and the 'Schema''s resolvers are applied to the resulting fields.
|
||||
-- | The substitution is applied to the document, and the resolvers are applied
|
||||
-- to the resulting fields. The operation name can be used if the document
|
||||
-- defines multiple root operations.
|
||||
--
|
||||
-- Returns the result of the query against the 'Schema' wrapped in a /data/ field, or
|
||||
-- errors wrapped in an /errors/ field.
|
||||
-- Returns the result of the query against the schema wrapped in a /data/
|
||||
-- field, or errors wrapped in an /errors/ field.
|
||||
executeWithName :: MonadIO m
|
||||
=> Schema m
|
||||
-> Text
|
||||
-> Schema.Subs
|
||||
-> AST.Document
|
||||
=> NonEmpty (Schema.Resolver m) -- ^ Resolvers
|
||||
-> Text -- ^ Operation name.
|
||||
-> Schema.Subs -- ^ Variable substitution function.
|
||||
-> AST.Document -- ^ @GraphQL@ Document.
|
||||
-> m Aeson.Value
|
||||
executeWithName schema name subs doc =
|
||||
maybe transformError (document schema $ Just name) $ Transform.document subs doc
|
||||
where
|
||||
transformError = return $ singleError "Schema transformation error."
|
||||
|
||||
document :: MonadIO m => Schema m -> Maybe Text -> AST.Core.Document -> m Aeson.Value
|
||||
document :: MonadIO m
|
||||
=> NonEmpty (Schema.Resolver m)
|
||||
-> Maybe Text
|
||||
-> AST.Core.Document
|
||||
-> m Aeson.Value
|
||||
document schema Nothing (op :| []) = operation schema op
|
||||
document schema (Just name) operations = case NE.dropWhile matchingName operations of
|
||||
[] -> return $ singleError
|
||||
@ -65,7 +66,10 @@ document schema (Just name) operations = case NE.dropWhile matchingName operatio
|
||||
matchingName _ = False
|
||||
document _ _ _ = return $ singleError "Missing operation name."
|
||||
|
||||
operation :: MonadIO m => Schema m -> AST.Core.Operation -> m Aeson.Value
|
||||
operation :: MonadIO m
|
||||
=> NonEmpty (Schema.Resolver m)
|
||||
-> AST.Core.Operation
|
||||
-> m Aeson.Value
|
||||
operation schema (AST.Core.Query _ flds)
|
||||
= runCollectErrs (Schema.resolve (NE.toList schema) (NE.toList flds))
|
||||
operation schema (AST.Core.Mutation _ flds)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
|
||||
-- | This module provides a representation of a @GraphQL@ Schema in addition to
|
||||
-- functions for defining and manipulating Schemas.
|
||||
-- functions for defining and manipulating schemas.
|
||||
module Language.GraphQL.Schema
|
||||
( Resolver
|
||||
, Schema
|
||||
@ -43,6 +43,7 @@ import Language.GraphQL.Trans
|
||||
import Language.GraphQL.Type
|
||||
import Language.GraphQL.AST.Core
|
||||
|
||||
{-# DEPRECATED Schema "Use NonEmpty (Resolver m) instead" #-}
|
||||
-- | A GraphQL schema.
|
||||
-- @m@ is usually expected to be an instance of 'MonadIO'.
|
||||
type Schema m = NonEmpty (Resolver m)
|
||||
|
||||
@ -11,46 +11,40 @@ module Test.StarWars.Schema
|
||||
import Control.Monad.Trans.Except (throwE)
|
||||
import Control.Monad.Trans.Class (lift)
|
||||
import Control.Monad.IO.Class (MonadIO(..))
|
||||
import Data.List.NonEmpty (NonEmpty((:|)))
|
||||
import Language.GraphQL.Schema ( Schema
|
||||
, Resolver
|
||||
, Argument(..)
|
||||
, Value(..)
|
||||
)
|
||||
import Data.List.NonEmpty (NonEmpty(..))
|
||||
import qualified Language.GraphQL.Schema as Schema
|
||||
import Language.GraphQL.Trans
|
||||
import Language.GraphQL.Type
|
||||
import Test.StarWars.Data
|
||||
|
||||
-- * Schema
|
||||
-- See https://github.com/graphql/graphql-js/blob/master/src/__tests__/starWarsSchema.js
|
||||
|
||||
schema :: MonadIO m => Schema m
|
||||
schema :: MonadIO m => NonEmpty (Schema.Resolver m)
|
||||
schema = hero :| [human, droid]
|
||||
|
||||
hero :: MonadIO m => Resolver m
|
||||
hero :: MonadIO m => Schema.Resolver m
|
||||
hero = Schema.objectA "hero" $ \case
|
||||
[] -> character artoo
|
||||
[Argument "episode" (ValueEnum "NEWHOPE")] -> character $ getHero 4
|
||||
[Argument "episode" (ValueEnum "EMPIRE" )] -> character $ getHero 5
|
||||
[Argument "episode" (ValueEnum "JEDI" )] -> character $ getHero 6
|
||||
[Schema.Argument "episode" (Schema.ValueEnum "NEWHOPE")] -> character $ getHero 4
|
||||
[Schema.Argument "episode" (Schema.ValueEnum "EMPIRE" )] -> character $ getHero 5
|
||||
[Schema.Argument "episode" (Schema.ValueEnum "JEDI" )] -> character $ getHero 6
|
||||
_ -> ActionT $ throwE "Invalid arguments."
|
||||
|
||||
human :: MonadIO m => Resolver m
|
||||
human :: MonadIO m => Schema.Resolver m
|
||||
human = Schema.wrappedObjectA "human" $ \case
|
||||
[Argument "id" (ValueString i)] -> do
|
||||
[Schema.Argument "id" (Schema.ValueString i)] -> do
|
||||
humanCharacter <- lift $ return $ getHuman i >>= Just
|
||||
case humanCharacter of
|
||||
Nothing -> return Null
|
||||
Just e -> Named <$> character e
|
||||
_ -> ActionT $ throwE "Invalid arguments."
|
||||
|
||||
droid :: MonadIO m => Resolver m
|
||||
droid :: MonadIO m => Schema.Resolver m
|
||||
droid = Schema.objectA "droid" $ \case
|
||||
[Argument "id" (ValueString i)] -> character =<< liftIO (getDroid i)
|
||||
[Schema.Argument "id" (Schema.ValueString i)] -> character =<< liftIO (getDroid i)
|
||||
_ -> ActionT $ throwE "Invalid arguments."
|
||||
|
||||
character :: MonadIO m => Character -> ActionT m [Resolver m]
|
||||
character :: MonadIO m => Character -> ActionT m [Schema.Resolver m]
|
||||
character char = return
|
||||
[ Schema.scalar "id" $ return $ id_ char
|
||||
, Schema.scalar "name" $ return $ name char
|
||||
|
||||
Loading…
Reference in New Issue
Block a user