# Custom-handler Handler The custom-handler provides coverage for situations where you need a more sophisticated handler and it is not worth to use a bsh script., In this case the persistence must be done be a java class that implements the PersistenceHandler interface, and the custom-handler specifying the name of the class used. The attributes are:
**Attribute**
**Usage**
className Name of the java class to be used
if EL expression that must be evaluated to true prior to handler action
unless EL expression that must be evaluated to false prior to handler action