By using my Skybrud.Umbraco.GridData package (which introduces a strongly typed model for the Grid), indexing the new Grid in Umbraco 7.2 is quite easy.
At Skybrud.dk we typically create a class named ExamineIndexer
that takes care of the Examine related events. This class should be initalized during Umbraco startup like this:
using Umbraco.Core;
namespace FanoeTest {
public class Startup : ApplicationEventHandler {