/**
* @param QueryInterface $query
* @return $this
* @throws \InvalidArgumentException
*/
public function registerQuery(QueryInterface $query)
{
$name = $query->getName();
if ($this->hasQuery($name)) {
throw new \InvalidArgumentException(sprintf('Query "%s" is already registered!', $name));
}
$this->queries[$name] = $query;
return $this;
}
/**
* @param MessageInterface|QueryInterface $message
* @return QueryHandlerInterface
* @throws QueryBusException
*/
protected function getHandler(QueryInterface $message)
{
$messageName = $message->getName();
$handlerId = $this->resolver->resolve($messageName);
if (!$this->locator->has($handlerId)) {
throw new QueryBusException(sprintf("Cannot instantiate handler '%s' for query '%s'", $handlerId, $messageName));
}
/** @var QueryHandlerInterface $handler */
$handler = $this->locator->get($handlerId);
if (!$handler instanceof QueryHandlerInterface) {
throw new QueryBusException(sprintf("Handler '%s' returned by locator for query '%s' should implement QueryHandlerInterface", $handlerId, $messageName));
}
return $handler;
}
