class VocabularyTranslation

class VocabularyTranslation extends Vocabulary {
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        $query = parent::query();
        $query->leftJoin('i18n_string', 'i18n', 'CAST ([v].[vid] AS CHAR(222)) = [i18n].[objectid]');
        $query->innerJoin('locales_target', 'lt', '[lt].[lid] = [i18n].[lid]');
        $query->condition('type', 'vocabulary')
            ->fields('lt')
            ->fields('i18n');
        $query->addField('lt', 'lid', 'lt_lid');
        if ($this->getDatabase()
            ->schema()
            ->fieldExists('taxonomy_vocabulary', 'language')) {
            $query->addField('v', 'language', 'v_language');
        }
        if ($this->getDatabase()
            ->schema()
            ->fieldExists('taxonomy_vocabulary', 'i18n_mode')) {
            $query->addField('v', 'i18n_mode');
        }
        return $query;
    }
    
    /**
     * {@inheritdoc}
     */
    public function fields() {
        $fields = [
            'i18n_mode' => $this->t('Internationalization mode.'),
            'v_language' => $this->t('Language from the taxonomy_vocabulary table.'),
            'property' => $this->t('Name of property being translated.'),
            'type' => $this->t('Name of property being translated.'),
            'objectid' => $this->t('Name of property being translated.'),
            'lt_lid' => $this->t('Name of property being translated.'),
            'translation' => $this->t('Translation of either the name or the description.'),
            'lid' => $this->t('Language string ID'),
            'textgroup' => $this->t('A module defined group of translations'),
            'context' => $this->t('Full string ID for quick search: type:objectid:property.'),
            'objectindex' => $this->t('Integer value of Object ID'),
            'format' => $this->t('The {filter_format}.format of the string'),
            'language' => $this->t('Language code from locales_target table'),
            'plid' => $this->t('Parent lid'),
            'plural' => $this->t('Plural index number'),
            'i18n_status' => $this->t('Translation needs update'),
        ];
        return parent::fields() + $fields;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getIds() {
        $ids = [];
        $ids['language']['type'] = 'string';
        $ids['language']['alias'] = 'lt';
        $ids['property']['type'] = 'string';
        return parent::getIds() + $ids;
    }

}