opaleye-0.4.2.0: An SQL-generating DSL targeting PostgreSQL

Safe Haskell	None
Language	Haskell98

Opaleye.Internal.QueryArr

Documentation

newtype QueryArr a b Source

Constructors

QueryArr ((a, PrimQuery, Tag) -> (b, PrimQuery, Tag))

Instances

Arrow QueryArr Source
ProductProfunctor QueryArr Source
Profunctor QueryArr Source
Category * QueryArr Source
Functor (QueryArr a) Source
Applicative (QueryArr a) Source

type Query = QueryArr () Source

simpleQueryArr :: ((a, Tag) -> (b, PrimQuery, Tag)) -> QueryArr a b Source

runQueryArr :: QueryArr a b -> (a, PrimQuery, Tag) -> (b, PrimQuery, Tag) Source

runSimpleQueryArr :: QueryArr a b -> (a, Tag) -> (b, PrimQuery, Tag) Source

runSimpleQueryArrStart :: QueryArr a b -> a -> (b, PrimQuery, Tag) Source

runQueryArrUnpack :: Unpackspec a b -> Query a -> ([PrimExpr], PrimQuery, Tag) Source

first3 :: (a1 -> b) -> (a1, a2, a3) -> (b, a2, a3) Source