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66 lines
2.1 KiB
Haskell
66 lines
2.1 KiB
Haskell
module Hasura.RQL.IR.Update where
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import Hasura.Prelude
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import Hasura.RQL.IR.BoolExp
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import Hasura.RQL.IR.Returning
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import Hasura.RQL.Types.Backend
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import Hasura.RQL.Types.Column
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import Hasura.SQL.Backend
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data AnnUpdG (b :: BackendType) v
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= AnnUpd
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{ uqp1Table :: !(TableName b)
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, uqp1OpExps :: ![(Column b, UpdOpExpG v)]
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, uqp1Where :: !(AnnBoolExp b v, AnnBoolExp b v)
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, uqp1Check :: !(AnnBoolExp b v)
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-- we don't prepare the arguments for returning
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-- however the session variable can still be
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-- converted as desired
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, uqp1Output :: !(MutationOutputG b v)
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, uqp1AllCols :: ![ColumnInfo b]
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}
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type AnnUpd b = AnnUpdG b (SQLExpression b)
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data UpdOpExpG v = UpdSet !v
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| UpdInc !v
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| UpdAppend !v
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| UpdPrepend !v
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| UpdDeleteKey !v
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| UpdDeleteElem !v
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| UpdDeleteAtPath ![v]
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deriving (Functor, Foldable, Traversable, Generic, Data)
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-- NOTE: This function can be improved, because we use
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-- the literal values defined below in the 'updateOperators'
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-- function in 'Hasura.GraphQL.Schema.Mutation'. It would
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-- be nice if we could avoid duplicating the string literal
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-- values
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updateOperatorText :: UpdOpExpG a -> Text
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updateOperatorText (UpdSet _) = "_set"
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updateOperatorText (UpdInc _) = "_inc"
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updateOperatorText (UpdAppend _) = "_append"
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updateOperatorText (UpdPrepend _) = "_prepend"
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updateOperatorText (UpdDeleteKey _) = "_delete_key"
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updateOperatorText (UpdDeleteElem _) = "_delete_elem"
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updateOperatorText (UpdDeleteAtPath _) = "_delete_at_path"
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traverseAnnUpd
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:: (Applicative f, Backend backend)
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=> (a -> f b)
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-> AnnUpdG backend a
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-> f (AnnUpdG backend b)
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traverseAnnUpd f annUpd =
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AnnUpd tn
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<$> traverse (traverse $ traverse f) opExps
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<*> ((,) <$> traverseAnnBoolExp f whr <*> traverseAnnBoolExp f fltr)
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<*> traverseAnnBoolExp f chk
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<*> traverseMutationOutput f mutOutput
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<*> pure allCols
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where
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AnnUpd tn opExps (whr, fltr) chk mutOutput allCols = annUpd
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