WS\Utils\Collections\Functions\Group\Aggregator\First

Complexity

Total Complexity

3

Size/Duplication

Total Lines	17
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__invoke()	0	7	2
A	__construct()	0	3	1

<?php
/**
 * @author Igor Pomiluyko <pomiluyko@worksolutions.ru>
 */

namespace WS\Utils\Collections\Functions\Group\Aggregator;

use WS\Utils\Collections\Collection;
use WS\Utils\Collections\Functions\ObjectFunctions;

class First
{

    private $fieldName;

    public function __construct(string $fieldName)
    {
        $this->fieldName = $fieldName;
    }

    public function __invoke(Collection $collection)
    {
        if (!$first = $collection->stream()->findFirst()) {
            return null;
        }

        return ObjectFunctions::getPropertyValue($first, $this->fieldName);
    }
}