Re: [xsl] ancestor/subsequent descendant test

[Michael Ludwig <mlu@xxxxxxxxxxxxx>]

Trevor Nicholls schrieb:
> My input documents are allowed to contain nested sections. An optional
> attribute marks out certain sections as significant. I want to detect
> a situation in which a section which contains a descendant significant
> section does not contain a subsequent INsignificant section (other
> than descendants of any significant sections).

section//section[ @sig='Y' ]
                [ not(following-sibling::section[1][not(@sig='Y')]) ]

Could this be it?

> The section .D. is OK because it is within a "significant section",
> but if the section it is wrapped in did not have the significant
> attribute set then I want to report it, because it is INsignificant
> and a descendant of a section which contains a prior significant
> section.

Maybe the following does what you want, but I'm not sure.

Michael Ludwig

<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

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

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

  <xsl:template match="section[ not(@sig='Y') ]">
    <xsl:copy>
      <xsl:if test="
        ancestor::section[1][not(@sig='Y')]
        /
        preceding-sibling::section[1][@sig='Y']">
        <xsl:attribute name="INSIGNIFICANT">Y</xsl:attribute>
      </xsl:if>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>