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9337edf096
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3563 GitOrigin-RevId: e35aafbd210d526ed53db7088e1a47f89f0b9c44
61 lines
2.2 KiB
Haskell
61 lines
2.2 KiB
Haskell
-- | Postgres DDL
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--
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-- Implements the DDL related methods of the 'Hasura.RQL.Types.Metadata.Backend.BackendMetadata'
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-- type class for the Postgres backend, which provides an interface for fetching information about
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-- the objects in the database, such as tables, relationships, etc.
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module Hasura.Backends.Postgres.DDL
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( parseCollectableType,
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module M,
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)
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where
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import Data.Aeson
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import Hasura.Backends.Postgres.DDL.BoolExp as M
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import Hasura.Backends.Postgres.DDL.ComputedField as M
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import Hasura.Backends.Postgres.DDL.EventTrigger as M
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import Hasura.Backends.Postgres.DDL.Function as M
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import Hasura.Backends.Postgres.DDL.Source as M
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import Hasura.Backends.Postgres.DDL.Table as M
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import Hasura.Backends.Postgres.SQL.DML
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import Hasura.Backends.Postgres.Translate.Column
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import Hasura.Backends.Postgres.Types.Column
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import Hasura.Base.Error
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import Hasura.Prelude
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import Hasura.RQL.IR.BoolExp
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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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import Hasura.SQL.Types
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import Hasura.Server.Utils
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import Hasura.Session
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parseCollectableType ::
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forall pgKind m.
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(Backend ('Postgres pgKind), MonadError QErr m) =>
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CollectableType (ColumnType ('Postgres pgKind)) ->
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Value ->
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m (PartialSQLExp ('Postgres pgKind))
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parseCollectableType pgType = \case
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-- When it is a special variable
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String t
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| isSessionVariable t -> return $ mkTypedSessionVar pgType $ mkSessionVariable t
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| isReqUserId t -> return $ mkTypedSessionVar pgType userIdHeader
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-- Typical value as Aeson's value
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val -> case pgType of
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CollectableTypeScalar cvType ->
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PSESQLExp . toTxtValue . ColumnValue cvType <$> parseScalarValueColumnType cvType val
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CollectableTypeArray ofType -> do
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vals <- runAesonParser parseJSON val
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scalarValues <- parseScalarValuesColumnType ofType vals
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return . PSESQLExp $
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SETyAnn
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(SEArray $ map (toTxtValue . ColumnValue ofType) scalarValues)
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(mkTypeAnn $ CollectableTypeArray (unsafePGColumnToBackend ofType))
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mkTypedSessionVar ::
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CollectableType (ColumnType ('Postgres pgKind)) ->
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SessionVariable ->
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PartialSQLExp ('Postgres pgKind)
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mkTypedSessionVar columnType =
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PSESessVar (unsafePGColumnToBackend <$> columnType)
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