private function calculate_writ_item_value($writ_rec) {
switch ($writ_rec["salary_compute_type"]) {
case SALARY_COMPUTE_TYPE_CONSTANT :
$value = $this->value;
break;
case SALARY_COMPUTE_TYPE_MULTIPLY :
$this->param2 = manage_writ_item::call_multiplicand_modules($writ_rec);
$value = $this->param1 * $this->param2;
break;
case SALARY_COMPUTE_TYPE_FUNCTION :
$functionName = $writ_rec["function_name"];
$value = manage_writ_item::$functionName($writ_rec);
if ($value === false)
return false;
break;
default:
$value = 0;
}
return $value;
}