在XSLT中将XML兄弟标签包裹在一个父标签中

huangapple
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英文:

Wrap XML sibling tags in a parent tag with XSLT

问题

I have a set of sibling tags that look like this in a much larger document:

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <foo>
  3.   <a>some text</a>, '<b>some text</b>', <c><d>some text</d> <e>sometext</e></c>
  4. </foo>

The requirement is that the transform matches tag a followed by ",", followed by tag b, then tag c. These are then wrapped in an outer tag. Below is a simplified representation of what I would like the document to look like:

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <foo>
  3.   <bar><a>some text</a>, '<b>some text</b>', <c><d>some text</d> <e>sometext</e></c></bar>
  4. </foo>

However, I want this to be done in place in a much larger document without disturbing any other tags.

Basically, I am attempting to match the pattern above in the nodes in the document, then wrap the pattern in a parent tag and delete the old nodes so I do not have duplicates in the output. Is there a way to do that cleanly in XSLT?

英文:

I have a set of sibling tags that look like this in a much larger document:

  1. &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  2. &lt;foo&gt;
  3.   &lt;a&gt;some text&lt;/a&gt;, &#39;&lt;b&gt;some text&lt;/b&gt;&#39;, &lt;c&gt;&lt;d&gt;some text&lt;/d&gt; &lt;e&gt;sometext&lt;/e&gt;&lt;/c&gt;
  4. &lt;/foo&gt;

The requirement is that the transform matches tag a followed by "," followed by tag b, then tag c. These are then wrapped in an outer tag. Below is a simplified representation of what I would like the document to look like:

  1. &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  2. &lt;foo&gt;
  3.   &lt;bar&gt;&lt;a&gt;some text&lt;/a&gt;, `&lt;b&gt;some text&lt;/b&gt;&#39;, &lt;c&gt;&lt;d&gt;some text&lt;/d&gt; &lt;e&gt;sometext&lt;/e&gt;&lt;/c&gt;&lt;/bar&gt;
  4. &lt;/foo&gt;

However, I want this to be done in place in a much larger document without disturbing any other tags.

Basically, I am attempting to match the pattern above in the nodes in the document then wrap the pattern in a parent tag and delete the old nodes so I do not have duplicates in the output. Is there away to do that cleanly in XSLT?

答案1

得分: 0

这是一个有点奇怪的序列，所以我能够得出的答案是一种有点奇怪的组合，使用了for-each-group group-starting-with和for-each-group group-adjacent（将检查委托给一个函数，你可能需要调整该函数以确切地检查你的节点是否符合预期）：

  1. <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  2.     xmlns:xs="http://www.w3.org/2001/XMLSchema"
  3.     xmlns:mf="http://example.com/mf"
  4.     exclude-result-prefixes="#all"
  5.     version="3.0">
  6.   
  7.   <xsl:function name="mf:adjacent-predicate" as="xs:boolean">
  8.     <xsl:param name="node" as="node()"/>
  9.     <xsl:param name="pos" as="xs:integer"/>
  10.     <xsl:sequence
  11.       select="$pos eq 1 and $node instance of element(a) or
  12.               $pos = (2,4) and $node instance of text() and contains($node, ',') or
  13.               $pos eq 3 and $node instance of element(b) or
  14.               $pos eq 5 and $node instance of element(c)"/>
  15.   </xsl:function>
  17.   <xsl:mode on-no-match="shallow-copy"/>
  19.   <xsl:template match="*[a]">
  20.     <xsl:copy>
  21.       <xsl:apply-templates select="@*"/>
  22.       <xsl:for-each-group select="node()" group-starting-with="a">
  23.         <xsl:choose>
  24.           <xsl:when test="self::a">
  25.             <xsl:for-each-group select="current-group()" group-adjacent="mf:adjacent-predicate(., position())">
  26.               <xsl:choose>
  27.                 <xsl:when test="current-grouping-key()">
  28.                   <bar>
  29.                     <xsl:apply-templates select="current-group()"/>
  30.                   </bar>
  31.                 </xsl:when>
  32.                 <xsl:otherwise>
  33.                   <xsl:apply-templates select="current-group()"/>
  34.                 </xsl:otherwise>          
  35.               </xsl:choose>
  36.             </xsl:for-each-group>
  37.           </xsl:when>
  38.           <xsl:otherwise>
  39.             <xsl:apply-templates select="current-group()"/>
  40.           </xsl:otherwise>
  41.         </xsl:choose>
  42.       </xsl:for-each-group>
  43.     </xsl:copy>
  44.   </xsl:template>
  45.   
  46. </xsl:stylesheet>
英文:

It is kind of an odd sequence so all I have been able to come with is a bit of an odd combination of a for-each-group group-starting-with plus for-each-group group-adjacent (delegating the check to a function you probably need to adjust to check your nodes exactly as you expect them):

  1. &lt;xsl:stylesheet xmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot;
  2. 	xmlns:xs=&quot;http://www.w3.org/2001/XMLSchema&quot;
  3. 	xmlns:mf=&quot;http://example.com/mf&quot;
  4. 	exclude-result-prefixes=&quot;#all&quot;
  5. 	version=&quot;3.0&quot;&gt;
  6.   
  7.   &lt;xsl:function name=&quot;mf:adjacent-predicate&quot; as=&quot;xs:boolean&quot;&gt;
  8.     &lt;xsl:param name=&quot;node&quot; as=&quot;node()&quot;/&gt;
  9.     &lt;xsl:param name=&quot;pos&quot; as=&quot;xs:integer&quot;/&gt;
  10.     &lt;xsl:sequence
  11.       select=&quot;$pos eq 1 and $node instance of element(a) or
  12.               $pos = (2,4) and $node instance of text() and contains($node, &#39;,&#39;) or
  13.               $pos eq 3 and $node instance of element(b) or
  14.               $pos eq 5 and $node instance of element(c)&quot;/&gt;
  15.   &lt;/xsl:function&gt;
  17.   &lt;xsl:mode on-no-match=&quot;shallow-copy&quot;/&gt;
  19.   &lt;xsl:template match=&quot;*[a]&quot;&gt;
  20.     &lt;xsl:copy&gt;
  21.       &lt;xsl:apply-templates select=&quot;@*&quot;/&gt;
  22.       &lt;xsl:for-each-group select=&quot;node()&quot; group-starting-with=&quot;a&quot;&gt;
  23.         &lt;xsl:choose&gt;
  24.           &lt;xsl:when test=&quot;self::a&quot;&gt;
  25.             &lt;xsl:for-each-group select=&quot;current-group()&quot; group-adjacent=&quot;mf:adjacent-predicate(., position())&quot;&gt;
  26.               &lt;xsl:choose&gt;
  27.                 &lt;xsl:when test=&quot;current-grouping-key()&quot;&gt;
  28.                   &lt;bar&gt;
  29.                     &lt;xsl:apply-templates select=&quot;current-group()&quot;/&gt;
  30.                   &lt;/bar&gt;
  31.                 &lt;/xsl:when&gt;
  32.                 &lt;xsl:otherwise&gt;
  33.                   &lt;xsl:apply-templates select=&quot;current-group()&quot;/&gt;
  34.                 &lt;/xsl:otherwise&gt;          
  35.               &lt;/xsl:choose&gt;
  36.             &lt;/xsl:for-each-group&gt;
  37.           &lt;/xsl:when&gt;
  38.           &lt;xsl:otherwise&gt;
  39.             &lt;xsl:apply-templates select=&quot;current-group()&quot;/&gt;
  40.           &lt;/xsl:otherwise&gt;
  41.         &lt;/xsl:choose&gt;
  42.       &lt;/xsl:for-each-group&gt;
  43.     &lt;/xsl:copy&gt;
  44.   &lt;/xsl:template&gt;
  45.   
  46. &lt;/xsl:stylesheet&gt;

huangapple
  • 本文由 发表于 2023年2月24日 04:30:53
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  • xml
  • xslt
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