/**
* @param ProviderResource $resource
*
* @return \Iterator
*
* @throws ForeignResourceException A foreign resource was received.
*/
public function fetch(ProviderResource $resource)
{
if ($resource->getProviderClassName() !== static::class) {
throw new ForeignResourceException(sprintf('Cannot fetch data from foreign source: "%s".', get_class($resource)));
}
return $resource->fetch($this->connector, $this->options ? clone $this->options : null);
}
private function fetch(ProviderResource $resource, CacheAdvice $cacheAdvice = null)
{
$provider = $this->getProvider($resource->getProviderClassName(), $resource->getProviderTag());
$this->applyCacheAdvice($provider, $cacheAdvice ?: $this->defaultCacheAdvice);
return $provider->fetch($resource);
}