public ResourceBundleMessageResolver() 
{
	  
		userResourceBundle = getFileBasedResourceBundle();
		defaultResourceBundle = ResourceBundle.getBundle( DEFAULT_VALIDATION_MESSAGES );
}

 public ResourceBundleMessageResolver(ResourceBundle resourceBundle) 
{
		if ( resourceBundle == null ) {
			userResourceBundle = getFileBasedResourceBundle();
		}
		else {
			this.userResourceBundle = resourceBundle;
		}
		defaultResourceBundle = ResourceBundle.getBundle( DEFAULT_VALIDATION_MESSAGES );
}

 public String interpolate(String message,
    ConstraintDescriptor constraintDescriptor,
    Object value) 
{
		//probably no need for caching, but it could be done by parameters since the map
		//is immutable and uniquely built per Validation definition, the comparaison has to be based on == and not equals though
		return replace( message, constraintDescriptor.getParameters() );
}

 public String interpolate(String message,
    ConstraintDescriptor constraintDescriptor,
    Object value,
    Locale locale) 
{
		throw new UnsupportedOperationException( "Interpolation for Locale. Has to be done." );
}