graphql-engine/server/src-lib/Hasura/RQL/DDL/Relationship/Rename.hs
Tom Harding 7e334e08a4 Import HashMap, not HM, Map, M...
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/8947
GitOrigin-RevId: 18e52c928e1df535579e2077b4af6c2ce92bdcef
2023-04-26 15:43:44 +00:00

76 lines
2.1 KiB
Haskell

module Hasura.RQL.DDL.Relationship.Rename
( RenameRel,
runRenameRel,
)
where
import Data.Aeson
import Data.HashMap.Strict qualified as HashMap
import Data.Text.Extended
import Hasura.Base.Error
import Hasura.EncJSON
import Hasura.Prelude
import Hasura.RQL.DDL.Schema (renameRelationshipInMetadata)
import Hasura.RQL.Types.Backend
import Hasura.RQL.Types.Common
import Hasura.RQL.Types.Metadata
import Hasura.RQL.Types.Metadata.Backend
import Hasura.RQL.Types.Relationships.Local
import Hasura.RQL.Types.SchemaCache
import Hasura.RQL.Types.SchemaCache.Build
import Hasura.RQL.Types.Table
data RenameRel b = RenameRel
{ _rrSource :: SourceName,
_rrTable :: TableName b,
_rrName :: RelName,
_rrNewName :: RelName
}
instance (Backend b) => FromJSON (RenameRel b) where
parseJSON = withObject "RenameRel" $ \o ->
RenameRel
<$> o .:? "source" .!= defaultSource
<*> o .: "table"
<*> o .: "name"
<*> o .: "new_name"
renameRelP2 ::
forall b m.
(QErrM m, CacheRM m, BackendMetadata b) =>
SourceName ->
TableName b ->
RelName ->
RelInfo b ->
m MetadataModifier
renameRelP2 source qt newRN relInfo = withNewInconsistentObjsCheck $ do
tabInfo <- askTableCoreInfo @b source qt
-- check for conflicts in fieldInfoMap
case HashMap.lookup (fromRel newRN) $ _tciFieldInfoMap tabInfo of
Nothing -> return ()
Just _ ->
throw400 AlreadyExists $
"cannot rename relationship "
<> oldRN
<<> " to "
<> newRN
<<> " in table "
<> qt
<<> " as a column/relationship with the name already exists"
-- update metadata
execWriterT $ renameRelationshipInMetadata @b source qt oldRN (riType relInfo) newRN
where
oldRN = riName relInfo
runRenameRel ::
forall b m.
(MonadError QErr m, CacheRWM m, MetadataM m, BackendMetadata b) =>
RenameRel b ->
m EncJSON
runRenameRel (RenameRel source qt rn newRN) = do
tabInfo <- askTableCoreInfo @b source qt
ri <- askRelType (_tciFieldInfoMap tabInfo) rn ""
withNewInconsistentObjsCheck $
renameRelP2 source qt newRN ri >>= buildSchemaCache
pure successMsg