XSL获取前一个元素/ @属性的值

时间:2018-01-06 22:54:41

标签: xml xslt xpath xslt-3.0

我有一个XML文本文件,分为<deposition>个,每个都标有<footnote><appnote>,其中包含用于脚注目的的识别号码和字母。现在我想循环遍历那些(XSL 3.0 / Saxon),然后获得紧接在它之前的元素的属性来填充新的脚注&#39;块&#39;在每个<footnotes>的末尾调用<deposition>。测试可以在http://xsltfiddle.liberty-development.net/948Fn5a/16

找到

XML:

<?xml version="1.0" encoding="UTF-8"?>
<corpus>
<deposition>
    <deposition-title>Praesent vitae</deposition-title>
    <text>
        <seg n="seg1" type="not_foo">Lorem ipsum dolor sit amet, consectetur 
            adipiscing elit. Vivamus<note2 n="abc">another note 2</note2><appnote>a</appnote> ultrices consequat facilisis. 
            Suspendisse a odio<note n="def">foo note</note><footnote>1</footnote> in lobortis. Aenean 
            non dui scelerisque, rutrum est at, cursus sem.</seg>
        <seg n="seg2" type="foo">Ut pharetra bibendum ipsum, portitor 
            velit pharetra quis. Aeneano<note n="ghi">foo note</note><footnote>2</footnote> purus. Praesent 
            aliquam viverra tellus<note n="jkl">another note</note><footnote>3</footnote> in condimentum.</seg><footnote>4</footnote>
    </text>
</deposition>
<deposition>
    <deposition-title>Elementum arcu non</deposition-title>
    <text>
        <seg n="seg1" type="foo">Curabitur pulvinar leo eget. Orci varius 
            natoque penatibus et magnis dis<note n="mno">foo note</note><footnote>1</footnote> montes, 
            nascetur ridiculus mus.</seg><footnote>2</footnote>
        <seg n="seg2" type="foo">Curabitur pulvinar leo eget. Orci varius 
            natoque penatibus<note2  n="pqr">another note 2</note2><appnote>a</appnote> et 
            magnis dis<note n="stu">foo note</note><footnote>3</footnote> montes, 
            nascetur ridiculus mus.</seg><footnote>4</footnote>
        <seg n="seg3" type="not_foo">Morbi vehicula dolor bibendum enim mollis lobortis. 
            Nulla rutrum vel diam vel posuere. Aliquam pellentesque 
            malesuada elit sed tempor.</seg>
    </text>
</deposition>
<deposition>
    <deposition-title>Elementum arcu non</deposition-title>
    <text>
        <seg n="seg1" type="foo">Curabitur pulvinar leo eget. Orci varius 
            natoque penatibus et magnis dis<note n="vwx">foo note</note><footnote>1</footnote> montes, 
            nascetur ridiculus mus.</seg><footnote>2</footnote>
        <seg n="seg2" type="not_foo">Morbi vehicula dolor bibendum enim mollis lobortis. 
            Nulla rutrum vel diam vel posuere. Aliquam<note2  n="yz">another note 2</note2><appnote>a</appnote> pellentesque 
            malesuada elit sed tempor.</seg>
    </text>
</deposition>
</corpus>

XSL:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema" 
exclude-result-prefixes="xs"
version="3.0">

<xsl:mode on-no-match="shallow-copy"/>

<xsl:template match="/">
  <xsl:apply-templates/>
</xsl:template>

<xsl:template match="deposition">
  <deposition>
    <xsl:apply-templates/> 
    <footnotes>
        <xsl:for-each select="text//footnote">
            <xsl:variable name="pos" select="./current() - 1"/>
            <footitem>
                <xsl:value-of select=". || '='"/><xsl:value-of select="preceding::node()[$pos]/@n"/>
            </footitem>
        </xsl:for-each>
        <xsl:for-each select="text//appnote">
            <xsl:variable name="pos" select="./current() - 1"/>
            <appitem>
                <xsl:value-of select=". || '='"/><xsl:value-of select="preceding::node()[$pos]/@n"/>
            </appitem>
        </xsl:for-each>
    </footnotes>
  </deposition>
</xsl:template>

</xsl:stylesheet>

然而,结果是出乎意料的,可能是由于误解current()preceding::node

例如,对于第一个<deposition>,我希望在每个seg的最后deposition之后显示以下内容:

<footnotes>
  <footitem>1=def</footitem>
  <footitem>2=ghi</footitem>
  <footitem>3=jkl</footitem>
  <footitem>4=seg1</footitem>
</footnotes>
<appnotes>
  <appitem>a=abc</appitem>
</appnotes>

但我得到了Error executing XSLT ....cannot convert string "a" to double

(注意:此示例是通用的,前一个元素可能是众多名称之一,因此对元素名称进行硬编码不是一个可行的解决方案。)

很多,非常感谢提前为这个庞大的项目提供所有帮助!

1 个答案:

答案 0 :(得分:2)

我想你只想要

        <xsl:for-each select="text//footnote">
            <footitem>
                <xsl:value-of select=". || '='"/><xsl:value-of select="preceding-sibling::*[1]/@n"/>
            </footitem>
        </xsl:for-each>
         <xsl:for-each select="text//appnote">
            <appitem>
                <xsl:value-of select=". || '='"/><xsl:value-of select="preceding-sibling::*[1]/@n"/>
            </appitem>
        </xsl:for-each>

虽然这给了(http://xsltfiddle.liberty-development.net/948Fn5a/17

<footnotes><footitem>1=def</footitem><footitem>2=ghi</footitem><footitem>3=jkl</footitem><footitem>4=seg2</footitem><appitem>a=abc</appitem></footnotes></deposition>

所以4=seg2而非4=seg1

你真的不需要两个相邻的value-of,你可以使用例如。

<xsl:value-of select="., preceding-sibling::*[1]/@n" separator="="/>

http://xsltfiddle.liberty-development.net/948Fn5a/18

                <xsl:value-of select=". || '=' || preceding-sibling::*[1]/@n"/>

http://xsltfiddle.liberty-development.net/948Fn5a/19

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