How to override Indexer EAV class

Question

Based on the answer for https://stackoverflow.com/questions/7597448/multi-select-filter-in-layered-navigation#24810688, I need to override

Mage_Catalog_Model_Resource_Product_Indexer_Eav_Source

Here's the xml I've tried:

<models>
  <catalog_resource>
    <rewrite>
      <product_indexer_eav_source>CompanyName_MyModule_Model_Catalog_Resource_Product_Indexer_Eav_Source</product_indexer_eav_source>
    </rewrite>
  </catalog_resource>
</models>

But it has no effect. Any ideas?

Answer 1

As per as,comment ,it may be an issue with Cache .After Clearing Cache the the rewrite will be working