Portability | portable |
---|---|
Stability | experimental |
Maintainer | Leon P Smith <leon@melding-monads.com> |
Safe Haskell | None |
Database.PostgreSQL.Simple.HStore
Description
Parsers and printers for hstore, a extended type bundled with PostgreSQL providing finite maps from text strings to text strings. See http://www.postgresql.org/docs/9.2/static/hstore.html for more information.
Note that in order to use this type, a database superuser must
install it by running a sql script in the share directory. This
can be done on PostgreSQL 9.1 and later with the command
CREATE EXTENSION hstore
. See
http://www.postgresql.org/docs/9.2/static/contrib.html for more
information.
- newtype HStoreList = HStoreList [(Text, Text)]
- newtype HStoreMap = HStoreMap (Map Text Text)
- class ToHStore a where
- toHStore :: a -> HStoreBuilder
- data HStoreBuilder
- toBuilder :: HStoreBuilder -> Builder
- toLazyByteString :: HStoreBuilder -> ByteString
- hstore :: (ToHStoreText a, ToHStoreText b) => a -> b -> HStoreBuilder
- class ToHStoreText a where
- toHStoreText :: a -> HStoreText
- data HStoreText
Documentation
newtype HStoreMap
data HStoreBuilder
Represents valid hstore syntax.
toBuilder :: HStoreBuilder -> Builder
hstore :: (ToHStoreText a, ToHStoreText b) => a -> b -> HStoreBuilder
class ToHStoreText a where
Methods
toHStoreText :: a -> HStoreText
Instances
ToHStoreText ByteString | Assumed to be UTF-8 encoded |
ToHStoreText ByteString | Assumed to be UTF-8 encoded |
ToHStoreText Text | |
ToHStoreText Text | |
ToHStoreText HStoreText |