Safe Haskell	Safe-Inferred
Language	Haskell2010

Hasura.GraphQL.Execute.RemoteJoin.Join

Synopsis

processRemoteJoins :: forall m. (MonadError QErr m, MonadIO m, MonadBaseControl IO m, MonadQueryTags m, MonadQueryLog m, MonadExecutionLog m, MonadTrace m, ProvidesNetwork m) => RequestId -> Logger Hasura -> Maybe (CredentialCache AgentLicenseKey) -> Environment -> [Header] -> UserInfo -> EncJSON -> Maybe RemoteJoins -> GQLReqUnparsed -> m EncJSON
foldJoinTreeWith :: (MonadError QErr m, MonadQueryTags m, Traversable f, MonadTrace m, MonadIO m) => (AnyBackend SourceJoinCall -> m ByteString) -> (ValidatedRemoteSchemaDef -> GQLReqOutgoing -> m ByteString) -> UserInfo -> f Value -> RemoteJoins -> [Header] -> Maybe Name -> m (f Value)

Documentation

processRemoteJoins :: forall m. (MonadError QErr m, MonadIO m, MonadBaseControl IO m, MonadQueryTags m, MonadQueryLog m, MonadExecutionLog m, MonadTrace m, ProvidesNetwork m) => RequestId -> Logger Hasura -> Maybe (CredentialCache AgentLicenseKey) -> Environment -> [Header] -> UserInfo -> EncJSON -> Maybe RemoteJoins -> GQLReqUnparsed -> m EncJSON Source #

Process all remote joins, recursively.

Given the result of the first step of an execution and its associated remote joins, process all joins recursively to build the resulting JSON object.

This function is a thin wrapper around processRemoteJoinsWith, and starts the join tree traversal process by re-parsing the EncJSON value into an introspectable JSON Value, and "injects" the required functions to process each join over the network.

foldJoinTreeWith Source #

Arguments

:: (MonadError QErr m, MonadQueryTags m, Traversable f, MonadTrace m, MonadIO m)
=> (AnyBackend SourceJoinCall -> m ByteString)	How to process a call to a source.
-> (ValidatedRemoteSchemaDef -> GQLReqOutgoing -> m ByteString)	How to process a call to a remote schema.
-> UserInfo	User information.
-> f Value	Initial accumulator; the LHS of this join tree.
-> RemoteJoins
-> [Header]
-> Maybe Name
-> m (f Value)

Fold the join tree.

This function takes as an argument the functions that will be used to do the actual network calls; this allows this function not to require MonadIO, allowing it to be used in tests.