创建一个XSL样式表,以根据输入参数省略不需要的元素

时间:2011-10-15 17:34:57

标签: xml xslt

这将有点长且具体,所以请耐心等待。我理解XSLT是如何工作的,但我不知道所有操作的元素。您可以提供任何帮助。

假设我有一份用XML编写的737s试用手册。但是,有3种类型的737(400,600和800),虽然90%的手册对于所有三种类型都是相同的,但是只有每种类型的特定部分。一些飞行员只会学习1或2(或有时是所有3)喷气机,所以我想省略与它们无关的部分。以下是我设置XML的方法:

<manual>
    <section>A: This is relevant for every type</section>
    <section t600="no" t800="no">B: This is relevant only for the 737-400</section>
    <section t800="no">C: This is relevant for 737-400 and 737-600</section>
    <section t400="no">D: This is relevant for 737-600 and 737-800</section>
</manual>

我希望能够以某种方式指定我只对737-800感兴趣并获得这样的手册:

<manual>
    <section>A: This is relevant for every type</section>
    <section>D: This is relevant for 737-600 and 737-800</section>
</manual>

或者对于对两架喷气机感兴趣的不同飞行员,比如737-400和737-600,手册将如下所示:

<manual>
    <section>A: This is relevant for every type</section>
    <section>B: This is relevant only for the 737-400</section>
    <section>C: This is relevant for 737-400 and 737-600</section>
    <section>D: This is relevant for 737-600 and 737-800</section>
</manual>

我可以访问源XML,所以如果我设置它的方式没有意义我可以更改它。我的想法是因为几乎所有类型的一切都是相同的,选择退出更有意义,但我意识到这可能会让它更难匹配?我不确定。

再次感谢您的光临!如果我遗漏了某些东西,请告诉我。

1 个答案:

答案 0 :(得分:3)

<强>予。 XSLT 2.0解决方案:

<xsl:stylesheet version="2.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:xs="http://www.w3.org/2001/XMLSchema"
 exclude-result-prefixes="xs">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <xsl:param name="pInterests">
  <interest topic="t800"/>
 </xsl:param>


 <xsl:template match="node()|@*">
  <xsl:copy>
   <xsl:apply-templates select="node()|@*"/>
  </xsl:copy>
 </xsl:template>

 <xsl:template match=
  "section[some $t in $pInterests/*/@topic
            satisfies
              not($t = current()/@*[. eq 'no']/name())
          ]
  ">
   <section><xsl:apply-templates/></section>
 </xsl:template>

 <xsl:template match="section"/>
</xsl:stylesheet>

应用于提供的XML文档

<manual>
    <section>A: This is relevant for every type</section>
    <section t600="no" t800="no">B: This is relevant only for the 737-400</section>
    <section t800="no">C: This is relevant for 737-400 and 737-600</section>
    <section t400="no">D: This is relevant for 737-600 and 737-800</section>
</manual>

生成想要的正确结果

<manual>
   <section>A: This is relevant for every type</section>
   <section>D: This is relevant for 737-600 and 737-800</section>
</manual>

如果我们在转换中替换当前参数

 <xsl:param name="pInterests">
  <interest topic="t800"/>
 </xsl:param>

<强>与

 <xsl:param name="pInterests">
  <interest topic="t400"/>
  <interest topic="t600"/>
 </xsl:param>

并再次对同一个XML文档应用修改后的转换,我们也得到了想要的正确结果

<manual>
   <section>A: This is relevant for every type</section>
   <section>B: This is relevant only for the 737-400</section>
   <section>C: This is relevant for 737-400 and 737-600</section>
   <section>D: This is relevant for 737-600 and 737-800</section>
</manual>

<强> II。 XSLT 1.0解决方案:

<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:param name="pInterests">
  <interest topic="t800"/>
 </xsl:param>

 <xsl:key name="kSectionTypeAttrByName" match="section/@*"
  use="concat(generate-id(..),'|', name())"/>

 <xsl:variable name="vInterests" select=
  "document('')/*/xsl:param[@name='pInterests']/*"/>

 <xsl:template match="node()|@*">
  <xsl:copy>
   <xsl:apply-templates select="node()|@*"/>
  </xsl:copy>
 </xsl:template>

 <xsl:template match="section">
  <xsl:variable name="vSec" select="."/>

  <xsl:variable name="vHasInterest">
   <xsl:for-each select="$vInterests/@topic">
    <xsl:variable name="vTopic" select="."/>


    <xsl:for-each select=
     "$vSec[not(key('kSectionTypeAttrByName',
                    concat(generate-id(),'|', $vTopic)
                   )
                =
                 'no'
                )
           ]">
      <xsl:text>1</xsl:text>
    </xsl:for-each>

   </xsl:for-each>
  </xsl:variable>

  <xsl:if test="string($vHasInterest)">
   <section><xsl:apply-templates/></section>
  </xsl:if>
 </xsl:template>
</xsl:stylesheet>

应用于提供的XML文档

<manual>
    <section>A: This is relevant for every type</section>
    <section t600="no" t800="no">B: This is relevant only for the 737-400</section>
    <section t800="no">C: This is relevant for 737-400 and 737-600</section>
    <section t400="no">D: This is relevant for 737-600 and 737-800</section>
</manual>

生成想要的正确结果

<manual>
   <section>A: This is relevant for every type</section>
   <section>D: This is relevant for 737-600 and 737-800</section>
</manual>

如果我们在转换中替换当前参数

 <xsl:param name="pInterests">
  <interest topic="t800"/>
 </xsl:param>

<强>与

 <xsl:param name="pInterests">
  <interest topic="t400"/>
  <interest topic="t600"/>
 </xsl:param>

并再次对同一个XML文档应用修改后的转换,我们也得到了想要的正确结果

<manual>
   <section>A: This is relevant for every type</section>
   <section>B: This is relevant only for the 737-400</section>
   <section>C: This is relevant for 737-400 and 737-600</section>
   <section>D: This is relevant for 737-600 and 737-800</section>
</manual>
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