使用XSLT的位置分组

我有包含一些文档的xml：

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line> 
</document>

H=文件标题，L=行项目。在这个例子中，whe有两个H，这意味着两个文档编号为doc1和doc2。doc1有三个行项目，doc2有一个行项目

如何使用xslt版本1转换数据以获得此结果：

<documents>
    <document>
        <header>
            <number>doc1</number>
        </header>
        <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
        </line-item>
    </document>
    <document>
        <header>
            <number>doc2</number>
        </header>
        <line-item>
            <line-number>1</line-number>
        </line-item>
    </document>
</documents>

文件1
1.
2.
3.
文档2
1.

此XSLT 1.0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:key name="kFollowing"
   match="line[starts-with(field,'L:')]"
   use="generate-id(preceding-sibling::line
                         [starts-with(field,'H:')]
                         [1]
                    )"/>

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

 <xsl:template match="line[starts-with(field,'H:')]">
  <document>
   <header>
    <number><xsl:value-of select="substring-after(field,'H:')"/></number>
    <line-item>
     <xsl:apply-templates mode="inGroup" select=
        "key('kFollowing', generate-id())"/>
    </line-item>
   </header>
  </document>
 </xsl:template>

 <xsl:template match="line" mode="inGroup">
  <line-number>
   <xsl:value-of select="substring-after(field,'L:')"/>
  </line-number>
 </xsl:template>
 <xsl:template match="text()"/>
</xsl:stylesheet>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

应用于提供的XML文档时：

<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:key name="kFollowing"
   match="line[starts-with(field,'L:')]"
   use="generate-id(preceding-sibling::line
                         [starts-with(field,'H:')]
                         [1]
                    )"/>

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

 <xsl:template match="line[starts-with(field,'H:')]">
  <document>
   <header>
    <number><xsl:value-of select="substring-after(field,'H:')"/></number>
    <line-item>
     <xsl:apply-templates mode="inGroup" select=
        "key('kFollowing', generate-id())"/>
    </line-item>
   </header>
  </document>
 </xsl:template>

 <xsl:template match="line" mode="inGroup">
  <line-number>
   <xsl:value-of select="substring-after(field,'L:')"/>
  </line-number>
 </xsl:template>
 <xsl:template match="text()"/>
</xsl:stylesheet>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

生成所需的正确结果：

<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:key name="kFollowing"
   match="line[starts-with(field,'L:')]"
   use="generate-id(preceding-sibling::line
                         [starts-with(field,'H:')]
                         [1]
                    )"/>

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

 <xsl:template match="line[starts-with(field,'H:')]">
  <document>
   <header>
    <number><xsl:value-of select="substring-after(field,'H:')"/></number>
    <line-item>
     <xsl:apply-templates mode="inGroup" select=
        "key('kFollowing', generate-id())"/>
    </line-item>
   </header>
  </document>
 </xsl:template>

 <xsl:template match="line" mode="inGroup">
  <line-number>
   <xsl:value-of select="substring-after(field,'L:')"/>
  </line-number>
 </xsl:template>
 <xsl:template match="text()"/>
</xsl:stylesheet>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

文件1
1.
2.
3.
文档2
1.

---

解释：使用键方便地指定和选择“标题”后面的一组完整的相邻“行”。

这里还有一个XSLT 2.0解决方案，使用

应用于提供的XML文档时：

<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:key name="kFollowing"
   match="line[starts-with(field,'L:')]"
   use="generate-id(preceding-sibling::line
                         [starts-with(field,'H:')]
                         [1]
                    )"/>

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

 <xsl:template match="line[starts-with(field,'H:')]">
  <document>
   <header>
    <number><xsl:value-of select="substring-after(field,'H:')"/></number>
    <line-item>
     <xsl:apply-templates mode="inGroup" select=
        "key('kFollowing', generate-id())"/>
    </line-item>
   </header>
  </document>
 </xsl:template>

 <xsl:template match="line" mode="inGroup">
  <line-number>
   <xsl:value-of select="substring-after(field,'L:')"/>
  </line-number>
 </xsl:template>
 <xsl:template match="text()"/>
</xsl:stylesheet>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

生成所需的正确结果：

<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:key name="kFollowing"
   match="line[starts-with(field,'L:')]"
   use="generate-id(preceding-sibling::line
                         [starts-with(field,'H:')]
                         [1]
                    )"/>

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

 <xsl:template match="line[starts-with(field,'H:')]">
  <document>
   <header>
    <number><xsl:value-of select="substring-after(field,'H:')"/></number>
    <line-item>
     <xsl:apply-templates mode="inGroup" select=
        "key('kFollowing', generate-id())"/>
    </line-item>
   </header>
  </document>
 </xsl:template>

 <xsl:template match="line" mode="inGroup">
  <line-number>
   <xsl:value-of select="substring-after(field,'L:')"/>
  </line-number>
 </xsl:template>
 <xsl:template match="text()"/>
</xsl:stylesheet>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

<document>
    <line id="0">
        <field id="0"><![CDATA[H:doc1]]></field>
    </line>
    <line id="1">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
    <line id="2">
        <field id="0"><![CDATA[L:2]]></field>
    </line>
    <line id="3">
        <field id="0"><![CDATA[L:3]]></field>
    </line>
    <line id="4">
        <field id="0"><![CDATA[H:doc2]]></field>
    </line>
    <line id="5">
        <field id="0"><![CDATA[L:1]]></field>
    </line>
</document>

<documents>
   <document>
      <header>
         <number>doc1</number>
         <line-item>
            <line-number>1</line-number>
            <line-number>2</line-number>
            <line-number>3</line-number>
         </line-item>
      </header>
   </document>
   <document>
      <header>
         <number>doc2</number>
         <line-item>
            <line-number>1</line-number>
         </line-item>
      </header>
   </document>
</documents>

文件1
1.
2.
3.
文档2
1.

---

解释：

，它的

组以

属性开头，即

当前-group（）

函数。

那么-您自己尝试了什么？你哪里有麻烦？问得好，+1。请参阅我的答案，了解完整、简短且简单的XSLT 1.0解决方案（使用键）：）还使用

@Petras添加了一个更短的XSLT2.0解决方案：不客气——您可能还对我的第二个答案感兴趣，该答案提供了一个更短的XSLT2.0解决方案。