/**
* Takes a bunch of params that are needed to match certain criteria and
* retrieves the relevant objects. Typically the valid params are only
* contact_id. We'll tweak this function to be more full featured over a period
* of time. This is the inverse function of create. It also stores all the retrieved
* values in the default array
*
* @param array $params (reference) an assoc array of name/value pairs
* @param array $defaults (reference) an assoc array to hold the flattened values
*
* @return object CRM_CiviDiscount_BAO_Item object on success, null otherwise
* @access public
* @static
*/
static function retrieve(&$params, &$defaults)
{
$item = new CRM_CiviDiscount_DAO_Track();
$item->copyValues($params);
if ($item->find(TRUE)) {
CRM_Core_DAO::storeValues($item, $defaults);
return $item;
}
return NULL;
}