LanguageContentSettingsTaxonomyVocabulary.php

<?php

namespace Drupal\language\Plugin\migrate\source\d7;

use Drupal\taxonomy\Plugin\migrate\source\d7\Vocabulary;

/**
 * Drupal 7 i18n vocabularies source from database.
 *
 * For available configuration keys, refer to the parent classes.
 *
 * @see \Drupal\migrate\Plugin\migrate\source\SqlBase
 * @see \Drupal\migrate\Plugin\migrate\source\SourcePluginBas
 *
 * @MigrateSource(
 *   id = "d7_language_content_settings_taxonomy_vocabulary",
 *   source_module = "i18n_taxonomy"
 * )
 */
class LanguageContentSettingsTaxonomyVocabulary extends Vocabulary {
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        $query = parent::query();
        if ($this->getDatabase()
            ->schema()
            ->fieldExists('taxonomy_vocabulary', 'i18n_mode')) {
            $query->addField('v', 'language');
            $query->addField('v', 'i18n_mode');
        }
        return $query;
    }
    
    /**
     * {@inheritdoc}
     */
    public function fields() {
        $fields = parent::fields();
        $fields['language'] = $this->t('i18n language');
        $fields['i18n_mode'] = $this->t('i18n mode');
        return $fields;
    }

}