Safe Haskell	Safe-Inferred
Language	Haskell2010

Language.GraphQL.Class

Description

ToGraphQL and FromGraphQL typeclasses used for user-defined type conversion.

Synopsis

class FromGraphQL a where
- fromGraphQL :: Value -> Maybe a
class ToGraphQL a where
- toGraphQL :: a -> Value
deriveFromGraphQL :: Name -> Q [Dec]
deriveToGraphQL :: Name -> Q [Dec]
gql :: QuasiQuoter

Documentation

class FromGraphQL a where Source #

Instances of this typeclass can be used to convert GraphQL internal representation to user-defined type.

Methods

fromGraphQL :: Value -> Maybe a Source #

Instances

Instances details

FromGraphQL Int16 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Int16 Source #
FromGraphQL Int32 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Int32 Source #
FromGraphQL Int64 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Int64 Source #
FromGraphQL Int8 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Int8 Source #
FromGraphQL Word16 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Word16 Source #
FromGraphQL Word32 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Word32 Source #
FromGraphQL Word64 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Word64 Source #
FromGraphQL Word8 Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Word8 Source #
FromGraphQL Value Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Value Source #
FromGraphQL Scientific Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Scientific Source #
FromGraphQL Text Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Text Source #
FromGraphQL Day Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Day Source #
FromGraphQL DiffTime Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe DiffTime Source #
FromGraphQL NominalDiffTime Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe NominalDiffTime Source #
FromGraphQL UTCTime Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe UTCTime Source #
FromGraphQL LocalTime Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe LocalTime Source #
FromGraphQL TimeOfDay Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe TimeOfDay Source #
FromGraphQL Bool Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Bool Source #
FromGraphQL Double Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Double Source #
FromGraphQL Float Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Float Source #
FromGraphQL Int Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Int Source #
FromGraphQL Word Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe Word Source #
FromGraphQL a => FromGraphQL (Vector a) Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe (Vector a) Source #
FromGraphQL a => FromGraphQL (Maybe a) Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe (Maybe a) Source #
FromGraphQL a => FromGraphQL [a] Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe [a] Source #
FromGraphQL a => FromGraphQL (HashMap Text a) Source #
Instance details Defined in Language.GraphQL.Class Methods fromGraphQL :: Value -> Maybe (HashMap Text a) Source #

class ToGraphQL a where Source #

Instances of this typeclass can be converted to GraphQL internal representation.

Methods

toGraphQL :: a -> Value Source #

Instances

Instances details

ToGraphQL Int16 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Int16 -> Value Source #
ToGraphQL Int32 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Int32 -> Value Source #
ToGraphQL Int64 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Int64 -> Value Source #
ToGraphQL Int8 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Int8 -> Value Source #
ToGraphQL Word16 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Word16 -> Value Source #
ToGraphQL Word32 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Word32 -> Value Source #
ToGraphQL Word64 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Word64 -> Value Source #
ToGraphQL Word8 Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Word8 -> Value Source #
ToGraphQL Value Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Value -> Value Source #
ToGraphQL Scientific Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Scientific -> Value Source #
ToGraphQL Text Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Text -> Value Source #
ToGraphQL Day Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Day -> Value Source #
ToGraphQL DiffTime Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: DiffTime -> Value Source #
ToGraphQL NominalDiffTime Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: NominalDiffTime -> Value Source #
ToGraphQL UTCTime Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: UTCTime -> Value Source #
ToGraphQL LocalTime Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: LocalTime -> Value Source #
ToGraphQL TimeOfDay Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: TimeOfDay -> Value Source #
ToGraphQL Bool Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Bool -> Value Source #
ToGraphQL Double Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Double -> Value Source #
ToGraphQL Float Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Float -> Value Source #
ToGraphQL Int Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Int -> Value Source #
ToGraphQL Word Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Word -> Value Source #
ToGraphQL a => ToGraphQL (Vector a) Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Vector a -> Value Source #
ToGraphQL a => ToGraphQL (Maybe a) Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: Maybe a -> Value Source #
ToGraphQL a => ToGraphQL [a] Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: [a] -> Value Source #
ToGraphQL a => ToGraphQL (HashMap Text a) Source #
Instance details Defined in Language.GraphQL.Class Methods toGraphQL :: HashMap Text a -> Value Source #

deriveFromGraphQL :: Name -> Q [Dec] Source #

Given a type derives a FromGraphQL instance for it.

The derivation can only work when all nested types already have FromGraphQL instances.

The following cases are supported:

Records encode input objects.
Sum types with all data constructors without parameters encode Enums.

deriveToGraphQL :: Name -> Q [Dec] Source #

Given a type derives a ToGraphQL instance for it.

The derivation can only work when all nested types already have ToGraphQL instances.

The following cases are supported:

Records are decoded as objects.
Sum types with all data constructors without parameters are decoded as Enums.
Sum types whose data constructors have exactly one parameter are decoded as Unions.

gql :: QuasiQuoter Source #

Deprecated: Use Language.GraphQL.TH.gql instead

Removes leading and trailing newlines. Indentation of the first line is removed from each line of the string.