batch update breadcrumb structure

gistfile1.php

<?php 

$query = new EntityFieldQuery();
$result = $query->entityCondition('entity_type', 'node')
->propertyCondition('type', 'news')
->execute();

$item_nids = array_keys($result['node']);
$items = entity_load('node', $item_nids);

foreach ($items as $node_id => $row) {
    $menu_result = db_select('menu_links', 'm')
        ->fields('m')
        ->condition('link_path', "node/{$node_id}")
        ->execute()
        ->fetchAssoc();

    if (!$menu_result) {
        $menu_item = array(
            'link_path' => 'node/' . $node_id,
            'link_title' => $row->title,
            'menu_name' => 'main-menu',
            'plid' => 407
        );

        menu_link_save($menu_item);
    }
}

menu_cache_clear('main-menu');