MetaDataCollection.php

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<?php

declare(strict_types=1);

namespace ILIAS\GlobalScreen\Scope\Layout\MetaContent\MetaData;

use Iterator;

class MetaDataCollection
{
    protected $items = [];

    public function add(MetaDatum $meta_datum) : void
    {
        $this->items[] = $meta_datum;
    }

    public function clear() : void
    {
        $this->items = [];
    }

    public function getItems() : Iterator
    {
        yield from $this->items;
    }

    public function getItemsAsKeyValuePairs() : array
    {
        $key_value_pairs = [];
        array_walk($this->items, function (MetaDatum $d) use (&$key_value_pairs) : void {
            $key_value_pairs[$d->getKey()] = $d->getValue();
        });
        return $key_value_pairs;
    }
}