• cdi
  • components
  • contexts
  • converters
  • el
  • eventlisteners
  • exceptionhandlers
  • facesviews
  • filters
  • functions
  • managedbeans
  • push
  • resourcehandlers
  • scripts
  • servlets
  • taghandlers
  • utils
  • validators
  • viewhandlers
 - 
  • Ajax
  • Beans
  • BeansLocal
  • Components
  • Events
  • Exceptions
  • Faces
  • FacesConfigXml
  • FacesLocal
  • JNDI
  • Messages
  • Servlets
  • WebXml

Available since OmniFaces 1.0

Collection of general utility methods with respect to working with exceptions. So far there's only an unwrapper and a type checker.

Usage

Some examples:

// Check if the caught exception has a ConstraintViolationException in its hierarchy.
catch (PersistenceException e) {
    if (Exceptions.is(e, ConstraintViolationException.class)) {
        // ...
    }
}
// Unwrap the caught FacesException until a non-FacesException is found.
catch (FacesException e) {
    Exception realRootCause = Exceptions.unwrap(e, FacesException.class);
    // ...
}

Feature request

If you know more useful methods/functions which you think should be added to this OmniFaces utility class so that everyone can benefit from a "standard" JSF utility library, feel free to post a feature request.

Documentation & Sources