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-rw-r--r--Data/GraphQL/Execute.hs38
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diff --git a/Data/GraphQL/Execute.hs b/Data/GraphQL/Execute.hs
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--- a/Data/GraphQL/Execute.hs
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-{-# LANGUAGE OverloadedStrings #-}
--- | This module provides the function to execute a @GraphQL@ request --
--- according to a 'Schema'.
-module Data.GraphQL.Execute (execute) where
-
-import Control.Monad (MonadPlus(..))
-import Data.GraphQL.Error
-import qualified Data.List.NonEmpty as NE
-import Data.List.NonEmpty (NonEmpty((:|)))
-import qualified Data.Aeson as Aeson
-import qualified Data.GraphQL.AST as AST
-import qualified Data.GraphQL.AST.Core as AST.Core
-import qualified Data.GraphQL.AST.Transform as Transform
-import Data.GraphQL.Schema (Schema)
-import qualified Data.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.
---
--- Returns the result of the query against the 'Schema' wrapped in a /data/ field, or
--- errors wrapped in an /errors/ field.
-execute
- :: (MonadPlus m)
- => Schema m -> Schema.Subs -> AST.Document -> m Aeson.Value
-execute schema subs doc = do
- coreDocument <- maybe mzero pure (Transform.document subs doc)
- document schema coreDocument
-
-document :: MonadPlus m => Schema m -> AST.Core.Document -> m Aeson.Value
-document schema (op :| []) = operation schema op
-document _ _ = error "Multiple operations not supported yet"
-
-operation :: MonadPlus m => Schema 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)
- = runCollectErrs (Schema.resolve (NE.toList schema) (NE.toList flds))