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<?php
namespace TreeHouse\Feeder\Resource\Transformer;
use TreeHouse\Feeder\Exception\UnexpectedTypeException;
use TreeHouse\Feeder\Resource\ResourceCollection;
use TreeHouse\Feeder\Resource\ResourceInterface;
/**
* Uses a callback to transform a resource.
*/
class CallbackTransformer implements ResourceTransformerInterface
{
* @var callable
protected $callback;
* @param callable $callback
*
* @throws UnexpectedTypeException
public function __construct($callback)
if (!is_callable($callback)) {
throw new UnexpectedTypeException($callback, 'callback');
}
$this->callback = $callback;
* @inheritdoc
public function transform(ResourceInterface $resource, ResourceCollection $collection)
return call_user_func($this->callback, $resource, $collection);
public function needsTransforming(ResourceInterface $resource)
return true;
treehouselabs /
feeder
