/**
* Triggers an event for handling undefined operators. Event listeners may
* capture this event and provide operator handling logic, such listeners should
* alter the provided Query object and then return it back.
*
* The triggered event follows the pattern:
*
* ```
* Search.operator<CamelCaseOperatorName>
* ```
*
* For example, `Search.operatorAuthorName` will be triggered for
* handling an operator named either `author-name` or `author_name`.
*
* @param \Cake\ORM\Query $query The query that is expected to be scoped
* @param \Search\TokenInterface $token Token describing an operator. e.g
* `-op_name:op_value`
* @return mixed Scoped query object expected or null if event was not captured
* by any listener
*/
protected function _triggerOperator(Query $query, TokenInterface $token)
{
$eventName = 'Search.' . (string) Inflector::variable('operator_' . $token->name());
$event = new Event($eventName, $this->_table, compact('query', 'token'));
return EventManager::instance()->dispatch($event)->result;
}
