<?php
class Namespace_Module_Model_Resource_Entity extends Mage_Eav_Model_Entity_Abstract
{
    /**
     * Resource initialization
     */
    protected function _construct()
    {
        $resource = Mage::getSingleton('core/resource');
        $this->setType('namespace_module_entity')->setConnection(
            $resource->getConnection('namespace_module_read'),
            $resource->getConnection('namespace_module_write')
        );
    }
}