--- /dev/null
+<?php
+
+namespace Drupal\field\Plugin\migrate\process;
+
+use Drupal\Component\Plugin\Exception\PluginNotFoundException;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\migrate\MigrateException;
+use Drupal\migrate\MigrateExecutableInterface;
+use Drupal\migrate\Plugin\MigrationInterface;
+use Drupal\migrate\ProcessPluginBase;
+use Drupal\migrate\Row;
+use Drupal\migrate_drupal\Plugin\MigrateCckFieldPluginManagerInterface;
+use Drupal\migrate_drupal\Plugin\MigrateFieldPluginManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Get the value from a method call on a field plugin instance.
+ *
+ * This process plugin will instantiate a field plugin based on the given
+ * field type and then call the given method on it for the return value.
+ *
+ * Available configuration keys:
+ * - source: The source field type to use to instantiate a field plugin.
+ * - method: The method to be called on the field plugin instance.
+ *
+ * If no field plugin for the given field type is found, NULL will be returned.
+ *
+ * Example:
+ *
+ * @code
+ * process:
+ * type:
+ * plugin: process_field
+ * source: type
+ * method: getFieldType
+ * @endcode
+ *
+ * @see \Drupal\migrate\Plugin\MigrateProcessInterface
+ * @see \Drupal\migrate_drupal\Plugin\MigrateFieldInterface;
+ *
+ * @MigrateProcessPlugin(
+ * id = "process_field"
+ * )
+ */
+class ProcessField extends ProcessPluginBase implements ContainerFactoryPluginInterface {
+
+ /**
+ * The cckfield plugin manager.
+ *
+ * @var \Drupal\migrate_drupal\Plugin\MigrateCckFieldPluginManagerInterface
+ */
+ protected $cckPluginManager;
+
+ /**
+ * The field plugin manager.
+ *
+ * @var \Drupal\migrate_drupal\Plugin\MigrateFieldPluginManagerInterface
+ */
+ protected $fieldPluginManager;
+
+ /**
+ * The migration being run.
+ *
+ * @var \Drupal\migrate\Plugin\MigrationInterface
+ */
+ protected $migration;
+
+ /**
+ * Constructs a ProcessField 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\MigrateCckFieldPluginManagerInterface $cck_plugin_manager
+ * The cckfield plugin manager.
+ * @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, MigrateCckFieldPluginManagerInterface $cck_plugin_manager, MigrateFieldPluginManagerInterface $field_plugin_manager, MigrationInterface $migration = NULL) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition);
+ $this->cckPluginManager = $cck_plugin_manager;
+ $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.cckfield'),
+ $container->get('plugin.manager.migrate.field'),
+ $migration
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
+ if (!is_string($value)) {
+ throw new MigrateException('The input value must be a string.');
+ }
+
+ if (empty($this->configuration['method'])) {
+ throw new MigrateException('You need to specify the name of a method to be called on the Field plugin.');
+ }
+ $method = $this->configuration['method'];
+
+ try {
+ return $this->callMethodOnFieldPlugin($this->fieldPluginManager, $value, $method, $row);
+ }
+ catch (PluginNotFoundException $e) {
+ try {
+ return $this->callMethodOnFieldPlugin($this->cckPluginManager, $value, $method, $row);
+ }
+ catch (PluginNotFoundException $e) {
+ return NULL;
+ }
+ }
+ }
+
+ /**
+ * Instantiate a field plugin and call a method on it.
+ *
+ * @param \Drupal\migrate_drupal\Plugin\MigrateFieldPluginManagerInterface $field_plugin_manager
+ * The field plugin manager.
+ * @param string $field_type
+ * The field type for which to get the field plugin.
+ * @param string $method
+ * The method to call on the field plugin.
+ * @param \Drupal\migrate\Row $row
+ * The row from the source to process.
+ *
+ * @return mixed
+ * The return value from the method called on the field plugin.
+ */
+ protected function callMethodOnFieldPlugin(MigrateFieldPluginManagerInterface $field_plugin_manager, $field_type, $method, Row $row) {
+ $plugin_id = $field_plugin_manager->getPluginIdFromFieldType($field_type, [], $this->migration);
+ $plugin_instance = $field_plugin_manager->createInstance($plugin_id, [], $this->migration);
+ if (!is_callable([$plugin_instance, $method])) {
+ throw new MigrateException('The specified method does not exists or is not callable.');
+ }
+ return call_user_func_array([$plugin_instance, $method], [$row]);
+ }
+
+}