jsonapi-8.x-2.x-dev/tests/modules/jsonapi_test_data_type/src/Normalizer/StringNormalizer.php

<?php

namespace Drupal\jsonapi_test_data_type\Normalizer;

use Drupal\Core\TypedData\Plugin\DataType\StringData;
use Drupal\serialization\Normalizer\NormalizerBase;
use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;

/**
 * Normalizes string data weirdly: replaces 'super' with 'NOT' and vice versa.
 */
class StringNormalizer extends NormalizerBase implements DenormalizerInterface {

  /**
   * {@inheritdoc}
   */
  protected $supportedInterfaceOrClass = StringData::class;

  /**
   * {@inheritdoc}
   */
  public function normalize($object, $format = NULL, array $context = []) {
    return str_replace('super', 'NOT', $object->getValue());
  }

  /**
   * {@inheritdoc}
   */
  public function denormalize($data, $class, $format = NULL, array $context = []) {
    return str_replace('NOT', 'super', $data);
  }

}