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27223fb102
Blocked on https://github.com/hasura/graphql-engine-mono/pull/1592. This drops the unused data loader code. There should be no function change, so no new tests are added. https://github.com/hasura/graphql-engine-mono/pull/1640 GitOrigin-RevId: 6589a69493dc3d2ea119e6ee04622fc94024403b
73 lines
2.4 KiB
Haskell
73 lines
2.4 KiB
Haskell
-- | Planning T-SQL queries and subscriptions.
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module Hasura.Backends.BigQuery.Plan
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( planNoPlan
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) where
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import Hasura.Prelude
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import qualified Data.Text.Lazy as LT
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import Control.Monad.Validate
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import Data.Aeson.Text
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import Data.Text.Extended
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import qualified Hasura.Base.Error as E
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import qualified Hasura.GraphQL.Parser as GraphQL
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import qualified Hasura.RQL.Types.Column as RQL
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import Hasura.Backends.BigQuery.FromIr as BigQuery
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import Hasura.Backends.BigQuery.Types
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import Hasura.RQL.IR
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import Hasura.SQL.Backend
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import Hasura.SQL.Types
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import Hasura.Session
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--------------------------------------------------------------------------------
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-- Top-level planner
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planNoPlan ::
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MonadError E.QErr m
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=> FromIrConfig
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-> UserInfo
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-> QueryDB 'BigQuery (Const Void) (GraphQL.UnpreparedValue 'BigQuery)
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-> m Select
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planNoPlan fromIrConfig userInfo queryDB = do
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rootField <- traverseQueryDB (prepareValueNoPlan (_uiSession userInfo)) queryDB
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runValidate (BigQuery.runFromIr fromIrConfig (BigQuery.fromRootField rootField))
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`onLeft` (E.throw400 E.NotSupported . (tshow :: NonEmpty Error -> Text))
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--------------------------------------------------------------------------------
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-- Resolving values
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-- | Prepare a value without any query planning; we just execute the
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-- query with the values embedded.
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prepareValueNoPlan ::
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(MonadError E.QErr m)
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=> SessionVariables
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-> GraphQL.UnpreparedValue 'BigQuery
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-> m Expression
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prepareValueNoPlan sessionVariables =
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\case
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GraphQL.UVLiteral x -> pure x
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GraphQL.UVSession -> pure globalSessionExpression
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-- To be honest, I'm not sure if it's indeed the JSON_VALUE operator we need here...
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GraphQL.UVSessionVar typ text ->
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case typ of
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CollectableTypeScalar scalarType ->
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pure
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(CastExpression
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(JsonValueExpression
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globalSessionExpression
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(FieldPath RootPath (toTxt text)))
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scalarType)
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CollectableTypeArray {} ->
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throwError $ E.internalError "Cannot currently prepare array types in BigQuery."
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GraphQL.UVParameter _ RQL.ColumnValue {..} -> pure (ValueExpression cvValue)
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where
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globalSessionExpression =
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ValueExpression
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(StringValue (LT.toStrict (encodeToLazyText sessionVariables)))
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