Question

我试图在XSL v1.0中单独总结正值和负值。

我有这样的XML：

<Billing_Statements>
    <Statement_Details>
        <Invoice_Details>
            <Meter_Details>
                <Consumption>XX</Consumption>
            </Meter_Details>
            <Meter_Details>
                <Consumption>XX</Consumption>
            </Meter_Details>
        </Invoice_Details>
        <Invoice_Details>
            <Meter_Details>
                <Consumption>XX</Consumption>
            </Meter_Details>
            <Meter_Details>
                <Consumption>XX</Consumption>
            </Meter_Details>
        </Invoice_Details>
    </Statement_Details>
</Billing_Statements>

XX可以是正值或负值。

我需要首先输出每个Statement_Details的所有Invoice_Detail节点的正值之和，然后输出负值的总和。

目前我尝试过：

<xsl:value-of select="sum(Invoice_Details/Meter_Details[Consumption &lt; 0])" />

以及它的许多变体，无论如何都会返回0的总和。

当从Meter_Details节点收集所有其他信息时，我的for-each部分完美地工作：

<xsl:for-each select="Invoice_Details/Meter_Details[Consumption &lt; 0]">

并仅选择具有负值或正值的节点。为什么这对sum（）不起作用？

我肯定在这里与XSL斗争，并且会喜欢我能得到的任何帮助。

Answer 1

使用：

sum(*/*/*[. >=0])

和

sum(*/*/*[not(. >=0)])

这是一个使用这两个相对XPath表达式的完整转换：

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output omit-xml-declaration="yes" indent="yes"/> <xsl:strip-space elements="*"/> <xsl:template match="Statement_Details"> Statement <xsl:value-of select="position()"/> <xsl:apply-templates/> </xsl:template> <xsl:template match="Invoice_Details"> Invoice <xsl:value-of select="position()"/> Positive: <xsl:value-of select="sum(*/*[. >=0])"/> Negative: <xsl:value-of select="sum(*/*[not(. >=0)])"/> </xsl:template> </xsl:stylesheet>

将此转换应用于以下XML文档（具有所需结构）时：

<Billing_Statements> <Statement_Details> <Invoice_Details> <Meter_Details> <Consumption>-3</Consumption> </Meter_Details> <Meter_Details> <Consumption>5</Consumption> </Meter_Details> </Invoice_Details> <Invoice_Details> <Meter_Details> <Consumption>8</Consumption> </Meter_Details> <Meter_Details> <Consumption>-12</Consumption> </Meter_Details> </Invoice_Details> <Invoice_Details> <Meter_Details> <Consumption>22</Consumption> </Meter_Details> <Meter_Details> <Consumption>3</Consumption> </Meter_Details> </Invoice_Details> <Invoice_Details> <Meter_Details> <Consumption>4</Consumption> </Meter_Details> <Meter_Details> <Consumption>-5</Consumption> </Meter_Details> </Invoice_Details> </Statement_Details> <Statement_Details> <Invoice_Details> <Meter_Details> <Consumption>-13</Consumption> </Meter_Details> <Meter_Details> <Consumption>25</Consumption> </Meter_Details> </Invoice_Details> <Invoice_Details> <Meter_Details> <Consumption>77</Consumption> </Meter_Details> <Meter_Details> <Consumption>-15</Consumption> </Meter_Details> </Invoice_Details> <Invoice_Details> <Meter_Details> <Consumption>31</Consumption> </Meter_Details> <Meter_Details> <Consumption>-3</Consumption> </Meter_Details> </Invoice_Details> <Invoice_Details> <Meter_Details> <Consumption>-87</Consumption> </Meter_Details> <Meter_Details> <Consumption>54</Consumption> </Meter_Details> </Invoice_Details> </Statement_Details> </Billing_Statements>

产生了想要的正确结果：

Statement 1 Invoice 1 Positive: 5 Negative: -3 Invoice 2 Positive: 8 Negative: -12 Invoice 3 Positive: 25 Negative: 0 Invoice 4 Positive: 4 Negative: -5 Statement 2 Invoice 1 Positive: 25 Negative: -13 Invoice 2 Positive: 77 Negative: -15 Invoice 3 Positive: 31 Negative: -3 Invoice 4 Positive: 54 Negative: -87

分别求出负值和正值

1 个答案: