/**
* Returns an array containing, for each field, the arary key used for that
* field in self::$_fields.
*
* @access public
* @return array
*/
static function &fieldKeys()
{
if (!self::$_fieldKeys) {
self::$_fieldKeys = array('id' => 'id', 'product_id' => 'product_id', 'contribution_id' => 'contribution_id', 'product_option' => 'product_option', 'quantity' => 'quantity', 'fulfilled_date' => 'fulfilled_date', 'start_date' => 'contribution_start_date', 'end_date' => 'contribution_end_date', 'comment' => 'comment', 'financial_type_id' => 'financial_type_id');
}
return self::$_fieldKeys;
}
