Data.Poseidon.Postgis

This library provide a Simple and Extensible access to PostgreSQL.

Simple: Poseidon runs a SQL query and returns a set of custom datatype. **It is not an ORM.**

Extensible: As a user of the library, you can map your custom PostgreSQL type to your Haskell datatype easily, in a pluggable way (e.g. if you're using postgis, you will be most likely interested by poseidon-postgis, that maps GeoJSON WKT to GeospatialGeometry).

Documentation

newtype PGGeospatialGeometry

Constructors

PGGeospatialGeometry GeospatialGeometry

Instances

Show PGGeospatialGeometry

Defined in Data.Poseidon.Postgis

Methods

showsPrec :: Int -> PGGeospatialGeometry -> ShowS

show :: PGGeospatialGeometry -> String

showList :: [PGGeospatialGeometry] -> ShowS

Generic PGGeospatialGeometry

Defined in Data.Poseidon.Postgis

Associated Types

type Rep PGGeospatialGeometry :: Type -> Type

Methods

from :: PGGeospatialGeometry -> Rep PGGeospatialGeometry x

to :: Rep PGGeospatialGeometry x -> PGGeospatialGeometry

Deserialize PGGeospatialGeometry

Defined in Data.Poseidon.Postgis

Methods

deserialize :: Result -> CInt -> CInt -> IO PGGeospatialGeometry

Deserialize [PGGeospatialGeometry]

Defined in Data.Poseidon.Postgis

Methods

deserialize :: Result -> CInt -> CInt -> IO [PGGeospatialGeometry]

Deserialize (Maybe PGGeospatialGeometry)

Defined in Data.Poseidon.Postgis

Methods

deserialize :: Result -> CInt -> CInt -> IO (Maybe PGGeospatialGeometry)

type Rep PGGeospatialGeometry

Defined in Data.Poseidon.Postgis

type Rep PGGeospatialGeometry = D1 (MetaData "PGGeospatialGeometry" "Data.Poseidon.Postgis" "poseidon-postgis-0.1.1.0-23TmrFXXBCGBbLDpEx6kkn" True) (C1 (MetaCons "PGGeospatialGeometry" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 GeospatialGeometry)))

toGeospatialGeometry :: PGGeospatialGeometry -> GeospatialGeometry

deserializeGeospatialGeometry :: ByteString -> PGGeospatialGeometry

parseWkbByteString :: ByteString -> IO PGGeospatialGeometry