| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Marconi.Core.Transformer.WithTransform
Description
A transformer that map the events in an indexer.
See Marconi.Core for documentation.
Synopsis
- data WithTransform indexer output input
- config :: forall indexer output input input. Lens (WithTransform indexer output input) (WithTransform indexer output input) (TransformConfig output input) (TransformConfig output input)
- withTransform :: (Point input -> Point output) -> (input -> Maybe output) -> indexer output -> WithTransform indexer output input
- class HasTransformConfig input output indexer where
- transformEvent :: Lens' (indexer input) (input -> Maybe output)
Documentation
data WithTransform indexer output input #
WithTransform is an indexer transformer that map the event type of an indexer
Instances
| IndexerMapTrans WithTransform # | |
Defined in Marconi.Core.Transformer.WithTransform Methods unwrapMap :: forall (indexer :: Type -> Type) output event. Lens' (WithTransform indexer output event) (indexer output) # | |
| (Queryable m output query indexer, Point output ~ Point input) => Queryable m input query (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods query :: Point input -> query -> WithTransform indexer output input -> m (Result query) # queryLatest :: query -> WithTransform indexer output input -> m (Result query) # | |
| (Point output ~ Point input, IsIndex m output indexer, Ord (Point output)) => IsIndex m input (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods index :: Timed (Point input) (Maybe input) -> WithTransform indexer output input -> m (WithTransform indexer output input) # indexAll :: (Eq (Point input), Traversable f) => f (Timed (Point input) (Maybe input)) -> WithTransform indexer output input -> m (WithTransform indexer output input) # indexAllDescending :: (Eq (Point input), Traversable f) => f (Timed (Point input) (Maybe input)) -> WithTransform indexer output input -> m (WithTransform indexer output input) # rollback :: Point input -> WithTransform indexer output input -> m (WithTransform indexer output input) # setLastStablePoint :: Point input -> WithTransform indexer output input -> m (WithTransform indexer output input) # | |
| (Point output ~ Point event, IsSync m output indexer) => IsSync m event (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods lastStablePoint :: WithTransform indexer output event -> m (Point event) # lastSyncPoint :: WithTransform indexer output event -> m (Point event) # | |
| (Functor m, Resetable m output indexer, HasGenesis (Point event)) => Resetable m event (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods reset :: WithTransform indexer output event -> m (WithTransform indexer output event) # | |
| HasTransformConfig input output (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods transformEvent :: Lens' (WithTransform indexer output input) (input -> Maybe output) # | |
| Closeable m indexer => Closeable m (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods close :: WithTransform indexer output event -> m () # | |
| HasDatabasePath indexer => HasDatabasePath (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods getDatabasePath :: WithTransform indexer output event -> SQLiteDBLocation # | |
config :: forall indexer output input input. Lens (WithTransform indexer output input) (WithTransform indexer output input) (TransformConfig output input) (TransformConfig output input) #
withTransform :: (Point input -> Point output) -> (input -> Maybe output) -> indexer output -> WithTransform indexer output input #
A smart constructor for WithTransform
class HasTransformConfig input output indexer where #
Provide accces to the tranformation function of a WithTransform transformer.
The provided instance ensure that access is granted even if other indexer transformers are used
on top of this one
Methods
transformEvent :: Lens' (indexer input) (input -> Maybe output) #
Instances
| HasTransformConfig input output (WithTransform indexer output) # | |
Defined in Marconi.Core.Transformer.WithTransform Methods transformEvent :: Lens' (WithTransform indexer output input) (input -> Maybe output) # | |