Sqel.Migration.Transform

Documentation

data MigrateTransform m old new

Constructors

MigrateTransform

Fields

• trans :: [old] -> m [new]
• types :: Map PgCompName CompAction
• schemaOld :: TableSchema old
• schemaNew :: TableSchema new

Instances

(Monad m, MigrationEffect m) => CustomMigration m ('Mig old new m (MigrateTransform m old new))

Defined in Sqel.Migration.Transform

Methods

customTypeKeys :: MigExt ('Mig old new m (MigrateTransform m old new)) -> m (Set (PgCompName, Bool))

customMigration :: PgTableName -> Set PgCompName -> MigExt ('Mig old new m (MigrateTransform m old new)) -> m ()

class MkMigrateTransform m old new where

Methods

migrateTransform :: Dd old -> Dd new -> ([DdType old] -> m [DdType new]) -> Migration ('Mig (DdType old) (DdType new) m (MigrateTransform m (DdType old) (DdType new)))

Instances

(DdlTypes 'True old (oldTable ': oldTypes), DdlTypes 'True new (newTable ': newTypes), TypeChanges oldTypes newTypes, MkTableSchema old, MkTableSchema new, ReifyDd old, ReifyDd new) => MkMigrateTransform m old new

Defined in Sqel.Migration.Transform

Methods

migrateTransform :: Dd old -> Dd new -> ([DdType old] -> m [DdType new]) -> Migration ('Mig (DdType old) (DdType new) m (MigrateTransform m (DdType old) (DdType new)))

transformAndMigrate :: forall old new m. Monad m => MigrationEffect m => Set PgCompName -> MigrateTransform m old new -> m ()