public function getRelatedObjectsCount()
    {
        // Not an easy task to fetch published objects with API and take care of current_version, status
        // and attribute version, so just use SQL to fetch the object count in one go
        $tagID = (int) $this->attribute( 'id' );

        $db = eZDB::instance();
        $result = $db->arrayQuery( "SELECT COUNT(DISTINCT o.id) AS count FROM eztags_attribute_link l
                                   INNER JOIN ezcontentobject o ON l.object_id = o.id
                                   AND l.objectattribute_version = o.current_version
                                   AND o.status = " . eZContentObject::STATUS_PUBLISHED . "
                                   WHERE l.keyword_id = $tagID" );

        if ( is_array( $result ) && !empty( $result ) )
            return (int) $result[0]['count'];

        return 0;
    }