| Stability | experimental |
|---|---|
| Maintainer | leon@melding-monads.com |
| Safe Haskell | None |
Database.PostgreSQL.Simple.Notification
Description
Support for receiving asynchronous notifications via PostgreSQL's Listen/Notify mechanism. See http://www.postgresql.org/docs/9.1/static/sql-notify.html for more information.
Documentation
data Notification
Constructors
| Notification | |
Fields | |
getNotification :: Connection -> IO Notification
Returns a single notification. If no notifications are available,
getNotification blocks until one arrives.
getNotificationNonBlocking :: Connection -> IO (Maybe Notification)
Non-blocking variant of getNotification. Returns a single notification,
if available. If no notifications are available, returns Nothing.