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aac64f2c81
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/1616 GitOrigin-RevId: f7eefd2367929209aa77895ea585e96a99a78d47
66 lines
2.7 KiB
Haskell
66 lines
2.7 KiB
Haskell
module Hasura.GraphQL.Schema.RemoteSource
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( remoteSourceField,
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)
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where
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import Hasura.GraphQL.Parser
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import Hasura.GraphQL.Schema.Backend
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import Hasura.GraphQL.Schema.Common
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import Hasura.GraphQL.Schema.Instances ()
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import Hasura.GraphQL.Schema.Select
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import Hasura.GraphQL.Schema.Table
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import Hasura.Prelude
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import Hasura.RQL.IR.Select qualified as IR
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import Hasura.RQL.Types.Common (RelType (..))
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import Hasura.RQL.Types.RemoteRelationship
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import Hasura.RQL.Types.SourceCustomization (mkCustomizedTypename)
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import Hasura.SQL.AnyBackend
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import Language.GraphQL.Draft.Syntax qualified as G
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-- | TODO(jkachmar): Documentation.
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remoteSourceField ::
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forall b r m n.
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MonadBuildSchema b r m n =>
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AnyBackend (RemoteSourceRelationshipInfo b) ->
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m [FieldParser n (AnnotatedField b)]
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remoteSourceField remoteDB = dispatchAnyBackend @BackendSchema remoteDB buildField
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where
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buildField ::
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forall src tgt.
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BackendSchema tgt =>
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RemoteSourceRelationshipInfo src tgt ->
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m [FieldParser n (AnnotatedField src)]
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buildField (RemoteSourceRelationshipInfo {..}) =
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withTypenameCustomization (mkCustomizedTypename $ Just _rsriSourceCustomization) do
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tableInfo <- askTableInfo @tgt _rsriSource _rsriTable
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fieldName <- textToName $ remoteRelationshipNameToText _rsriName
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maybePerms <- tableSelectPermissions @tgt tableInfo
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case maybePerms of
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Nothing -> pure []
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Just tablePerms -> do
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parsers <- case _rsriType of
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ObjRel -> do
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selectionSetParser <- tableSelectionSet _rsriSource tableInfo tablePerms
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pure $
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pure $
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subselection_ fieldName Nothing selectionSetParser <&> \fields ->
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IR.SourceRelationshipObject $
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IR.AnnObjectSelectG fields _rsriTable $
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IR._tpFilter $
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tablePermissionsInfo tablePerms
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ArrRel -> do
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let aggFieldName = fieldName <> $$(G.litName "_aggregate")
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selectionSetParser <- selectTable _rsriSource tableInfo fieldName Nothing tablePerms
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aggSelectionSetParser <- selectTableAggregate _rsriSource tableInfo aggFieldName Nothing tablePerms
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pure $
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catMaybes
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[ Just $ selectionSetParser <&> IR.SourceRelationshipArray,
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aggSelectionSetParser <&> fmap IR.SourceRelationshipArrayAggregate
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]
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pure $
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parsers <&> fmap \select ->
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IR.AFRemote $
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IR.RemoteSelectSource $
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mkAnyBackend @tgt $
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IR.RemoteSourceSelect _rsriSource _rsriSourceConfig select _rsriMapping
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