3.17. RuleBase Example

<Order>
    <header>
        <orderId>A188127</orderId>
        <username>user1</username>
        <name>
            <firstname>Bob</firstname>
            <lastname>Bobington</lastname>
        </name>
        <email>bb@awesomemail.com</email>
        <state>Queensland</state>
    </header>
    <order-item>
        <quantity>1</quantity>
        <productId>364b</productId>
        <title>A Great Movie</title>
        <price>29.95</price>
    </order-item>
    <order-item>
        <quantity>2</quantity>
        <productId>299</productId>
        <title>A Terrible Movie</title>
        <price>29.95</price>
    </order-item>
</Order>