FieldType.php

<?php

namespace Drupal\field\Plugin\migrate\process;

use Drupal\Component\Plugin\Exception\PluginNotFoundException;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\migrate\Attribute\MigrateProcess;
use Drupal\migrate\MigrateExecutableInterface;
use Drupal\migrate\Plugin\MigrationInterface;
use Drupal\migrate\Plugin\migrate\process\StaticMap;
use Drupal\migrate\Row;
use Drupal\migrate_drupal\Plugin\MigrateFieldPluginManagerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
class FieldType extends StaticMap implements ContainerFactoryPluginInterface {
    
    /**
     * The field plugin manager.
     *
     * @var \Drupal\migrate_drupal\Plugin\MigrateFieldPluginManagerInterface
     */
    protected $fieldPluginManager;
    
    /**
     * The migration object.
     *
     * @var \Drupal\migrate\Plugin\MigrationInterface
     */
    protected $migration;
    
    /**
     * Constructs a FieldType plugin.
     *
     * @param array $configuration
     *   The plugin configuration.
     * @param string $plugin_id
     *   The plugin ID.
     * @param mixed $plugin_definition
     *   The plugin definition.
     * @param \Drupal\migrate_drupal\Plugin\MigrateFieldPluginManagerInterface $field_plugin_manager
     *   The field plugin manager.
     * @param \Drupal\migrate\Plugin\MigrationInterface $migration
     *   The migration being run.
     */
    public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrateFieldPluginManagerInterface $field_plugin_manager, ?MigrationInterface $migration = NULL) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->fieldPluginManager = $field_plugin_manager;
        $this->migration = $migration;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition, ?MigrationInterface $migration = NULL) {
        return new static($configuration, $plugin_id, $plugin_definition, $container->get('plugin.manager.migrate.field'), $migration);
    }
    
    /**
     * {@inheritdoc}
     */
    public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
        $field_type = is_array($value) ? $value[0] : $value;
        try {
            $plugin_id = $this->fieldPluginManager
                ->getPluginIdFromFieldType($field_type, [], $this->migration);
            return $this->fieldPluginManager
                ->createInstance($plugin_id, [], $this->migration)
                ->getFieldType($row);
        } catch (PluginNotFoundException $e) {
            return parent::transform($value, $migrate_executable, $row, $destination_property);
        }
    }

}