XPath中如何比较不同类型的对象[4]

                if(operand2 is string)convert node1 to string as a new object named newoperand1

                if(operand2 is boolean)convert node1 to boolean as a new object named newoperand1

                if(comparebasic(newoperand1,operand2,operator))return true

            }

        }

        return false

    }