Retrieval.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Taxonomy\Nodes;
 
use Generator;
use ILIAS\Data\Order;
use ILIAS\Data\Range;
use ILIAS\Repository\RetrievalBase;
use ILIAS\Repository\RetrievalInterface;
 
class Retrieval implements RetrievalInterface
{
    use RetrievalBase;
 
    protected array $data;
 
    public function __construct(
        \ilTaxonomyTree $tree,
        int $parent_node_id,
        bool $manual_sorting
    ) {
        $this->data = $tree->getChildsByTypeFilter($parent_node_id, ["taxn"]);
        $this->data = \ilArrayUtil::sortArray(
            $this->data,
            $manual_sorting ? "order_nr" : "title",
            "asc",
            false
        );
        foreach ($this->data as &$row) {
            $row["id"] = (int) $row["child"];
        }
        unset($row);
    }
 
    public function getData(
        array $fields,
        ?Range $range = null,
        ?Order $order = null,
        array $filter = [],
        array $parameters = []
    ): Generator {
        $data = $this->applyOrder($this->data, $order);
        $data = $this->applyRange($data, $range);
 
        yield from $data;
    }
 
    public function count(array $filter, array $parameters): int
    {
        return count($this->data);
    }
 
    public function isFieldNumeric(string $field): bool
    {
        return $field === "order_nr" || $field === "child";
    }
}