ProxyColumnIterator.php
68 lines
| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace AC\ColumnIterator; |
| 6 | |
| 7 | use AC\Column; |
| 8 | use AC\ColumnCollection; |
| 9 | use AC\ColumnIterator; |
| 10 | use AC\ColumnRepository; |
| 11 | |
| 12 | class ProxyColumnIterator implements ColumnIterator |
| 13 | { |
| 14 | private ColumnRepository $repository; |
| 15 | |
| 16 | private ?ColumnCollection $column_collection = null; |
| 17 | |
| 18 | public function __construct(ColumnRepository $repository) |
| 19 | { |
| 20 | $this->repository = $repository; |
| 21 | } |
| 22 | |
| 23 | protected function forward(): ColumnCollection |
| 24 | { |
| 25 | if (null === $this->column_collection) { |
| 26 | $this->column_collection = $this->repository->find_all(); |
| 27 | } |
| 28 | |
| 29 | return $this->column_collection; |
| 30 | } |
| 31 | |
| 32 | public function current(): Column |
| 33 | { |
| 34 | return $this->forward()->current(); |
| 35 | } |
| 36 | |
| 37 | public function next(): void |
| 38 | { |
| 39 | $this->forward()->next(); |
| 40 | } |
| 41 | |
| 42 | public function key(): int |
| 43 | { |
| 44 | return $this->forward()->key(); |
| 45 | } |
| 46 | |
| 47 | public function valid(): bool |
| 48 | { |
| 49 | return $this->forward()->valid(); |
| 50 | } |
| 51 | |
| 52 | public function rewind(): void |
| 53 | { |
| 54 | $this->forward()->rewind(); |
| 55 | } |
| 56 | |
| 57 | public function count(): int |
| 58 | { |
| 59 | return $this->forward()->count(); |
| 60 | } |
| 61 | |
| 62 | public function first(): ?Column |
| 63 | { |
| 64 | return $this->forward()->first(); |
| 65 | } |
| 66 | |
| 67 | } |
| 68 |