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<?php |
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namespace KGzocha\Searcher; |
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/** |
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* @author Krzysztof Gzocha <[email protected]> |
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*/ |
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abstract class AbstractCollection implements \Countable, \IteratorAggregate |
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{ |
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/** |
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* @var array |
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*/ |
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private $items; |
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/** |
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* @param \Traversable|array $items |
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*/ |
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public function __construct($items = []) |
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{ |
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$this->items = []; |
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$this->isTraversable($items); |
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$this->checkItems($items); |
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$this->items = $items; |
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} |
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/** |
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* @param object $item |
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* |
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* @return bool |
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*/ |
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abstract protected function isItemValid($item); |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getIterator() |
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{ |
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return new \ArrayIterator($this->items); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function count() |
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{ |
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return count($this->items); |
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} |
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/** |
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* @param mixed $item |
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* |
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* @return $this |
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*/ |
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protected function addItem($item) |
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{ |
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$this->items[] = $item; |
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return $this; |
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} |
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/** |
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* @param string $name |
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* @param mixed $item |
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* |
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* @return $this |
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*/ |
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protected function addNamedItem($name, $item) |
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{ |
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$this->items[$name] = $item; |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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protected function getItems() |
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{ |
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return $this->items; |
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} |
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/** |
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* @param string $name |
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* |
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* @return mixed|null |
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*/ |
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protected function getNamedItem($name) |
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{ |
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if (array_key_exists($name, $this->items)) { |
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return $this->items[$name]; |
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} |
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return null; |
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} |
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/** |
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* @param mixed $items |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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private function isTraversable($items) |
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{ |
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if (!is_array($items) && !$items instanceof \Traversable) { |
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throw new \InvalidArgumentException(sprintf( |
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'Argument passed to collection %s needs to be an array or traversable object', |
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get_class($this) |
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)); |
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} |
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} |
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/** |
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* @param array|\Traversable $items |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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private function checkItems($items) |
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{ |
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foreach ($items as $item) { |
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if ($this->isItemValid($item)) { |
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continue; |
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} |
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10 |
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throw new \InvalidArgumentException(sprintf( |
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'At least one item in collection "%s" is invalid.', |
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get_class($this) |
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)); |
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} |
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} |
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} |
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krzysztof-gzocha /
searcher
