Copyright | 2013 Kei Hibino |
---|---|
License | BSD3 |
Maintainer | ex8k.hibino@gmail.com |
Stability | experimental |
Portability | unknown |
Safe Haskell | None |
Language | Haskell2010 |
This module defines monad transformer which lift from query into query with ordering.
- data Orderings c m a
- orderings :: Monad m => m a -> Orderings c m a
- type OrderingTerms = [OrderingTerm]
- orderBy :: (Monad m, ProjectableOrdering (Projection c)) => Projection c t -> Order -> Orderings c m ()
- asc :: (Monad m, ProjectableOrdering (Projection c)) => Projection c t -> Orderings c m ()
- desc :: (Monad m, ProjectableOrdering (Projection c)) => Projection c t -> Orderings c m ()
- extractOrderingTerms :: (Monad m, Functor m) => Orderings c m a -> m (a, OrderingTerms)
Transformer into query with ordering
Type to accumulate ordering context.
Type c
is ordering term projection context type.
MonadQualify ConfigureQuery QueryAggregate | Instance to lift from qualified table forms into |
MonadQualify ConfigureQuery (Orderings Flat QueryCore) | Instance to lift from qualified table forms into |
MonadRestrict rc m => MonadRestrict rc (Orderings c m) |
|
MonadTrans (Orderings c) | |
Monad m => Monad (Orderings c m) | |
Functor m => Functor (Orderings c m) | |
Applicative m => Applicative (Orderings c m) | |
MonadPartition m => MonadPartition (Orderings c m) |
|
MonadAggregate m => MonadAggregate (Orderings c m) |
|
MonadQuery m => MonadQuery (Orderings c m) |
|
type OrderingTerms = [OrderingTerm] Source
Type for order-by terms
API of query with ordering
:: (Monad m, ProjectableOrdering (Projection c)) | |
=> Projection c t | Ordering terms to add |
-> Order | Order direction |
-> Orderings c m () | Result context with ordering |
Add ordering terms.
:: (Monad m, ProjectableOrdering (Projection c)) | |
=> Projection c t | Ordering terms to add |
-> Orderings c m () | Result context with ordering |
Add ascendant ordering term.
:: (Monad m, ProjectableOrdering (Projection c)) | |
=> Projection c t | Ordering terms to add |
-> Orderings c m () | Result context with ordering |
Add descendant ordering term.
Result
extractOrderingTerms :: (Monad m, Functor m) => Orderings c m a -> m (a, OrderingTerms) Source
Run Orderings
to get OrderingTerms