graphql-engine/server/src-lib/Hasura/RQL/IR/Delete.hs
Antoine Leblanc b9ee669ee1 Improve remote joins collect
### Description

This PR improves the `Collect` module by re-ordering the functions to make clear what is public API and what is internal implementation. Furthermore, it makes use of `traverseOf` and `traverseFields` to reduce duplication. To do so, it also introduces a few more lenses in the rest of the codebase, and uses this opportunity to harmonize some structures that were not following our naming convention.

While the diff is massive, a lot of it is just code moving around; the file is now divided into separate sections:
- entry points: IR types for which we want to run the collection
- internal monadic structure
- internal traversals: functions that do nothing but drill down further
- actual transformations: the three cases where we do actually have work to do: selection sets on which we do want to insert join columns, extract remote relationships... those functions are left unchanged by this PR
- internal helpers

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3863
GitOrigin-RevId: f7cbecfae9eed9737b62acfa5848bfcf9d4651f6
2022-03-10 06:18:48 +00:00

35 lines
847 B
Haskell

{-# LANGUAGE UndecidableInstances #-}
module Hasura.RQL.IR.Delete
( AnnDel,
AnnDelG (..),
adTable,
adWhere,
adOutput,
adAllCols,
)
where
import Control.Lens.TH (makeLenses)
import Data.Kind (Type)
import Hasura.Prelude
import Hasura.RQL.IR.BoolExp
import Hasura.RQL.IR.Returning
import Hasura.RQL.Types.Backend
import Hasura.RQL.Types.Column
import Hasura.SQL.Backend
data AnnDelG (b :: BackendType) (r :: Type) v = AnnDel
{ _adTable :: TableName b,
_adWhere :: (AnnBoolExp b v, AnnBoolExp b v),
_adOutput :: MutationOutputG b r v,
_adAllCols :: [ColumnInfo b]
}
deriving (Functor, Foldable, Traversable)
type AnnDel b = AnnDelG b Void (SQLExpression b)
deriving instance (Show (MutationOutputG b r a), Backend b, Show (BooleanOperators b a), Show a) => Show (AnnDelG b r a)
$(makeLenses ''AnnDelG)