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<?php |
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namespace Hexogen\KDTree; |
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use Hexogen\KDTree\Exception\ValidationException; |
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use Hexogen\KDTree\Interfaces\ItemInterface; |
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use Hexogen\KDTree\Interfaces\ItemListInterface; |
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class ItemList implements ItemListInterface |
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{ |
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private $dimensions; |
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private $items; |
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private $ids; |
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private $lastPosition; |
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/** |
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* ItemList constructor. |
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* @param int $dimensions |
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* @throws ValidationException |
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*/ |
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public function __construct(int $dimensions) |
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{ |
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if ($dimensions <= 0) { |
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throw new ValidationException('$dimensions should be bigger than 0'); |
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} |
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$this->lastPosition = 0; |
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$this->dimensions = $dimensions; |
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$this->items = []; |
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$this->ids = []; |
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} |
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/** |
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* Add or replace an item in the item list |
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* |
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* @api |
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* @param ItemInterface $item |
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*/ |
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public function addItem(ItemInterface $item) |
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{ |
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$this->validateItem($item); |
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$id = $item->getId(); |
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if (isset($this->ids[$id])) { |
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$index = $this->ids[$id]; |
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$this->items[$index] = $item; |
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} else { |
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$this->items[] = $item; |
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$this->ids[$id] = $this->lastPosition++; |
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} |
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} |
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/** |
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* Get all items in the list |
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* @return ItemInterface[] |
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*/ |
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public function getItems(): array |
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{ |
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return $this->items; |
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} |
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/** |
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* @return int number of dimensions in item |
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*/ |
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public function getDimensionCount(): int |
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{ |
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return $this->dimensions; |
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} |
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/** |
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* @param ItemInterface $item |
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* @throws ValidationException |
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*/ |
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private function validateItem(ItemInterface $item) |
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{ |
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if ($item->getDimensionsCount() !== $this->dimensions) { |
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throw new ValidationException('$dValues number dimensions should be equal to ' . $this->dimensions); |
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} |
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} |
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} |
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hexogen /
kdtree
