Safe Haskell	Safe-Inferred
Language	Haskell2010

Database.Persist.SqlBackend.Internal.SqlPoolHooks

Synopsis

Documentation

A set of hooks that may be used to alter the behaviour of runSqlPoolWithExtensibleHooks in a backwards-compatible fashion.

Constructors

Fields

alterBackend :: backend -> m backend

Alter the backend prior to executing any actions with it.
runBefore :: backend -> Maybe IsolationLevel -> m ()

Run this action immediately before the action is performed.
runAfter :: backend -> Maybe IsolationLevel -> m ()

Run this action immediately after the action is completed.
runOnException :: backend -> Maybe IsolationLevel -> SomeException -> m ()

This action is performed when an exception is received. The exception is provided as a convenience - it is rethrown once this cleanup function is complete.