Re: unique elements from different sourcefile

i'm really having a hard time figuring this little problem. because of
simplicity and performance i used the muench method for finding unique
elements and whatever else i needed. but this one just doesn't work for
me.

all i want is getting all possible children of a specific element. since
the content model of some elements can be very complicated (such as
"head"), most xpath axis don't work.

i think i have to use at least two for loops,

what do my xsl:key and xsl:for-each(s) have to look like. i tried many
things, i just don't want to write here.

U:\utemp\winkler>type winkler.xml
<dtd>
<element name="head" content-type="element">
<content-model-expanded>
  <sequence-group>
    <or-group occurrence="*">
      <element-name name="meta"/>
      <element-name name="link"/>
      <element-name name="object"/>
    </or-group>
    <or-group>
      <sequence-group>
        <element-name name="title"/>
        <or-group occurrence="*">
          <element-name name="meta"/>
          <element-name name="link"/>
          <element-name name="object"/>
        </or-group>
        <sequence-group occurrence="?">
          <element-name name="base"/>
          <or-group occurrence="*">
            <element-name name="meta"/>
            <element-name name="link"/>
            <element-name name="object"/>
          </or-group>
        </sequence-group>
      </sequence-group>
      <sequence-group>
        <element-name name="base"/>
        <or-group occurrence="*">
          <element-name name="meta"/>
          <element-name name="link"/>
          <element-name name="object"/>
        </or-group>
        <sequence-group>
          <element-name name="title"/>
          <or-group occurrence="*">
            <element-name name="meta"/>
            <element-name name="link"/>
            <element-name name="object"/>
          </or-group>
        </sequence-group>
      </sequence-group>
    </or-group>
  </sequence-group>
</content-model-expanded>
</element>
</dtd>

U:\utemp\winkler>type winkler.xsl
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version="1.0">

<xsl:template match="/*">
  <xsl:for-each select="element">
    <xsl:sort name="@name"/>
    <element name="{@name}">
      <xsl:variable name="all-children" select=".//element-name"/>
      <xsl:for-each select="$all-children">
        <xsl:sort name="@name"/>
        <xsl:if test="generate-id(.)=
                      generate-id($all-children[@name=current()/@name])">
          <child-element name="{@name}"/>
        </xsl:if>
      </xsl:for-each>
    </element>
  </xsl:for-each>
</xsl:template>

U:\utemp\winkler>xt winkler.xml winkler.xsl
<?xml version="1.0" encoding="utf-8"?>
<element name="head">
<child-element name="meta"/>
<child-element name="link"/>
<child-element name="object"/>
<child-element name="title"/>
<child-element name="base"/>
</element>

--
Training Blitz: 3-days XSLT/XPath, 2-days XSLFO - Feb 18-22, 2002

G. Ken Holman                mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
Crane Softwrights Ltd.         http://www.CraneSoftwrights.com/s/
Box 266, Kars, Ontario CANADA K0A-2E0 +1(613)489-0999 (Fax:-0995)
ISBN 0-13-065196-6                        Definitive XSLT & XPath
ISBN 1-894049-08-X  Practical Transformation Using XSLT and XPath
ISBN 1-894049-07-1               Practical Formatting Using XSLFO
XSL/XML/DSSSL/SGML/OmniMark services, books(electronic, printed),
articles, training(instructor-live,Internet-live,web/CD,licensed)
Next public training:   2002-01-10,11,16,18,02-11,12,13,15,18,21,
-                                03-11,14,15,18,19,04-08,09,10,12