Question

我需要在XML Invoice中创建一组Schematron规则测试计算。问题是一些测试元素是可选的，当测试元素是mjissing时我的规则会失败。如何指定以下内容：“如果元素存在则测试值”？

XML实例摘录：

<invoice>
<invoiceLineItem number="1">
    <invoicedQuantity>50</invoicedQuantity>
    <amountExclusiveAllowancesCharges>500</amountExclusiveAllowancesCharges>
    <amountInclusiveAllowancesCharges>455</amountInclusiveAllowancesCharges>
    <itemPrice>10</itemPrice>
    <invoiceAllowanceChargeAmount>45</invoiceAllowanceChargeAmount>
</invoiceLineItem>
<invoiceLineItem number="2">
    <invoicedQuantity>10</invoicedQuantity>
    <amountExclusiveAllowancesCharges>150</amountExclusiveAllowancesCharges>
    <itemPrice>15</itemPrice>
</invoiceLineItem>
</invoice>

我的Schematron检查计算：

<sch:schema xmlns:sch="http://www.ascc.net/xml/schematron">
    <sch:pattern name="Check calculation in invoicelineItem">
        <sch:rule context="invoiceLineItem">
            <sch:assert test="amountExclusiveAllowancesCharges = invoicedQuantity * itemPrice">The amountExclusiveAllowancesCharges calculation is incorrect.</sch:assert>
            <sch:assert test="amountInclusiveAllowancesCharges = (invoicedQuantity * itemPrice) - invoiceAllowanceChargeAmount">The amountInclusiveAllowancesCharges calculation is incorrect.</sch:assert>
        </sch:rule>
    </sch:pattern>
</sch:schema>

当缺少amountInclusiveAllowancesCharges和invoiceAllowanceChargeAmount时，它会失败（它们是可选的。

我会感激任何有用的提示，

埃娃

Answer 1

也许是迟到，但如果没有，或者其他人有类似的问题：

<sch:schema xmlns:sch="http://www.ascc.net/xml/schematron">
    <sch:pattern name="Check calculation in invoicelineItem">
        <sch:rule context="invoiceLineItem">
            <sch:assert test="amountExclusiveAllowancesCharges = invoicedQuantity * itemPrice">The amountExclusiveAllowancesCharges calculation is incorrect.</sch:assert>
        </sch:rule>
    </sch:pattern>
    <sch:pattern name="Check calculation in invoicelineItem (inclusive)">
        <sch:rule context="invoiceLineItem[amountInclusiveAllowancesCharges][invoiceAllowanceChargeAmount]">
            <sch:assert test="amountInclusiveAllowancesCharges = (invoicedQuantity * itemPrice) - invoiceAllowanceChargeAmount">The amountInclusiveAllowancesCharges calculation is incorrect.</sch:assert>
        </sch:rule>
    </sch:pattern>
</sch:schema>

您需要两个规则，因为您要验证invoiceLineItem 每一次都是排他性的，但只要它们是包含物可得到（context="invoiceLineItem[amountInclusiveAllowancesCharges][invoiceAllowanceChargeAmount]"）。
因此需要两种模式：http://www.schematron-quickfix.com/escali_xsm/escali-ext_en.html#sqf:d109e234
其他任何东西都是一样的

可选元素的Schematron计算测试

1 个答案: