Safe Haskell	None
Language	Haskell2010

Hasura.GraphQL.ApolloFederation

Description

Tools for generating fields for Apollo federation

Synopsis

data ApolloFederationParserFunction n = ApolloFederationParserFunction {
- aafuGetRootField :: ApolloFederationAnyType -> n (QueryRootField UnpreparedValue)
}
data ApolloFederationAnyType = ApolloFederationAnyType {
- afTypename :: Name
- afPKValues :: Object
}
anyParser :: Parser origin 'Both Parse ApolloFederationAnyType
convertToApolloFedParserFunc :: (Monad n, MonadParse n, Backend b) => SourceInfo b -> TableInfo b -> TablePermG b (UnpreparedValue b) -> StringifyNumbers -> Maybe NamingCase -> NESeq (ColumnInfo b) -> Parser 'Output n (AnnotatedFields b) -> Parser 'Output n (ApolloFederationParserFunction n)
modifyApolloFedParserFunc :: (MonadParse n, Backend b) => SourceInfo b -> TableInfo b -> TablePermG b (UnpreparedValue b) -> StringifyNumbers -> Maybe NamingCase -> NESeq (ColumnInfo b) -> AnnotatedFields b -> ApolloFederationParserFunction n
mkServiceField :: FieldParser Parse (SchemaIntrospection -> QueryRootField UnpreparedValue)
apolloRootFields :: HashSet ExperimentalFeature -> [(Name, Parser 'Output Parse (ApolloFederationParserFunction Parse))] -> [FieldParser Parse (SchemaIntrospection -> QueryRootField UnpreparedValue)]
generateSDL :: SchemaIntrospection -> Text
filterAndWrapTypeSystemDefinition :: TypeDefinition [Name] InputValueDefinition -> Maybe TypeSystemDefinition
mkEntityUnionFieldParser :: [(Name, Parser 'Output Parse (ApolloFederationParserFunction Parse))] -> FieldParser Parse (QueryRootField UnpreparedValue)
concatQueryRootFields :: [QueryRootField UnpreparedValue] -> QueryRootField UnpreparedValue

Documentation

data ApolloFederationParserFunction n Source #

Internal parser function for entities field

Constructors

ApolloFederationParserFunction
Fields aafuGetRootField :: ApolloFederationAnyType -> n (QueryRootField UnpreparedValue)

data ApolloFederationAnyType Source #

Haskell representation of _Any scalar

Constructors

ApolloFederationAnyType
Fields afTypename :: Name afPKValues :: Object

anyParser :: Parser origin 'Both Parse ApolloFederationAnyType Source #

Parser for _Any scalar

convertToApolloFedParserFunc :: (Monad n, MonadParse n, Backend b) => SourceInfo b -> TableInfo b -> TablePermG b (UnpreparedValue b) -> StringifyNumbers -> Maybe NamingCase -> NESeq (ColumnInfo b) -> Parser 'Output n (AnnotatedFields b) -> Parser 'Output n (ApolloFederationParserFunction n) Source #

modifyApolloFedParserFunc :: (MonadParse n, Backend b) => SourceInfo b -> TableInfo b -> TablePermG b (UnpreparedValue b) -> StringifyNumbers -> Maybe NamingCase -> NESeq (ColumnInfo b) -> AnnotatedFields b -> ApolloFederationParserFunction n Source #

mkServiceField :: FieldParser Parse (SchemaIntrospection -> QueryRootField UnpreparedValue) Source #

Creates _service FieldParser using the schema introspection. This will allow us to process the following query:

query {
  _service {
    sdl
  }
}

apolloRootFields :: HashSet ExperimentalFeature -> [(Name, Parser 'Output Parse (ApolloFederationParserFunction Parse))] -> [FieldParser Parse (SchemaIntrospection -> QueryRootField UnpreparedValue)] Source #

generateSDL :: SchemaIntrospection -> Text Source #

Generate sdl from the schema introspection

filterAndWrapTypeSystemDefinition :: TypeDefinition [Name] InputValueDefinition -> Maybe TypeSystemDefinition Source #

Filter out schema components from sdl which are not required by apollo federation and wraps it in TypeSystemDefinition

mkEntityUnionFieldParser :: [(Name, Parser 'Output Parse (ApolloFederationParserFunction Parse))] -> FieldParser Parse (QueryRootField UnpreparedValue) Source #

Creates _entities FieldParser using Parsers for Entity union, schema introspection and a list of all query FieldParser. This will allow us to process the following query:

query ($representations: [_Any!]!) {
  _entities(representations: $representations) {
    ... on SomeType {
      foo
      bar
    }
  }
}

concatQueryRootFields :: [QueryRootField UnpreparedValue] -> QueryRootField UnpreparedValue Source #

concatenates multiple fields