Tonic\Component\ApiLayer\ModelTransformer\CollectionModelTransformer

Complexity

Total Complexity

10

Size/Duplication

Total Lines	57
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes	6
Bugs	0	Features	1

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	supports()	0	10	4
B	transform()	0	22	5

<?php

namespace Tonic\Component\ApiLayer\ModelTransformer;

use Tonic\Component\ApiLayer\ModelTransformer\Exception\UnsupportedTransformationException;

/**
 * Handles homogeneous collection of objects.
 */
class CollectionModelTransformer implements ModelTransformerInterface
{
    /**
     * @var ModelTransformer
     */
    private $modelTransformer;

    /**
     * Constructor.
     *
     * @param ModelTransformer $modelTransformer
     */
    public function __construct(ModelTransformer $modelTransformer)
    {
        $this->modelTransformer = $modelTransformer;
    }

    /**
     * {@inheritdoc}
     */
    public function supports($object, $targetClass)
    {
        if (!(is_array($object) || $object instanceof \Traversable)) {
            return false;
        }

        // if at least one object supported in homogeneous collection
        // it is assumed that all other objects are supported
        return ((count($object) == 0) || $this->modelTransformer->supports(reset($object), $targetClass));
    }

    /**
     * {@inheritdoc}
     */
    public function transform($object, $targetClass)
    {
        if (count($object) == 0) {
            return [];
        }

        $modelTransformer = $this->modelTransformer->findSupportedModelTransformer(reset($object), $targetClass);
        if (!$modelTransformer) {
            throw new UnsupportedTransformationException();
        }

        $elements = [];
        foreach ($object as $element) {
            if (!$this->modelTransformer->supports($element, $targetClass)) {
                throw new UnsupportedTransformationException();
            }

            $elements[] = $modelTransformer->transform($element, $targetClass);
        }

        return $elements;
    }
}