Rarst

<?php

/*
Plugin Name: R Debug
Description: Set of dump helpers for debug.
Author: Andrey "Rarst" Savchenko
Author URI: https://www.rarst.net/
License: MIT
 */

sbob-sfdc

global with sharing class InvoiceUtilities {

    // class method to renumber Line Items for a given Invoice number
    // returns a string that indicates success or failure
    webservice static String renumberLineItems(String invoiceName) {

    // create a copy of the target Invoice object and it's Line Items
    Invoice__c invoice = [Select i.Name, (Select Name From Line_Items__r ORDER BY Name) 
                            From Invoice__c i 
                           Where i.Name = :invoiceName LIMIT 1];