Re: [xsl] Question about grouping attributes using keys

["Mukul Gandhi" <gandhi.mukul@xxxxxxxxx>]

I can suggest something like below (tested with IE 6.0):

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
                      xmlns:msxsl="urn:schemas-microsoft-com:xslt"
                      version="1.0">

  <xsl:output method="html" />

  <xsl:key name="UNIQUE_ATTRS" match="ITEM" use="@ATTR" />
  <xsl:key name="UNIQUE_ELEMS" match="ITEM" use="ELEM" />

  <xsl:template match="/">
    <xsl:call-template name="test">
      <xsl:with-param name="theKey" select="'UNIQUE_ELEMS'"/>
      <xsl:with-param name="theName" select="'ELEM'"/>
    </xsl:call-template>
    <xsl:call-template name="test">
      <xsl:with-param name="theKey" select="'UNIQUE_ATTRS'"/>
      <xsl:with-param name="theName" select="'ATTR'"/>
    </xsl:call-template>
  </xsl:template>

  <xsl:template name="test">
    <xsl:param name="theKey" select="." />
    <xsl:param name="theName" select="." />
    <p>
      <xsl:value-of select="concat('key: ', $theKey)" /><br/>
      <xsl:value-of select="concat('node: ', $theName)"/><br/>
      <xsl:text>values:</xsl:text>
      <xsl:variable name="rtf">
        <xsl:for-each select="ROOT/ITEM[generate-id() =
generate-id(key($theKey, ELEM)[1])]">
          <xsl:value-of select="." />
        </xsl:for-each>
        <xsl:for-each select="ROOT/ITEM[generate-id() =
generate-id(key($theKey, @ATTR)[1])]">
	   <xsl:value-of select="@ATTR" /><xsl:text> </xsl:text>
        </xsl:for-each>
      </xsl:variable>
      <xsl:value-of select="msxsl:node-set($rtf)" />
    </p>
  </xsl:template>

</xsl:stylesheet>

It seems, it's difficult to make the stylesheet more generic than this.

On 4/19/07, Waters, Tyler S FOR:EX <Tyler.Waters@xxxxxxxxx> wrote:
> I'm trying to write a generic function to output a list of unique values
> on a selected node, whether it be an Element or Attribute.  I've got the
> Element portion working fine, but Attributes don't seem to want to run
> through the for-each loop....  Here's a test which highlights this:
>
> test.xml:
>
>        <?xml version="1.0" encoding="ISO8859-1" ?>
>        <?xml-stylesheet type="text/xsl" href="test.xsl"?>
>        <ROOT>
>                <ITEM ATTR="A1">
>                        <ELEM>E1</ELEM>
>                </ITEM>
>                <ITEM ATTR="A1">
>                        <ELEM>E1</ELEM>
>                </ITEM>
>                <ITEM ATTR="A2">
>                        <ELEM>E2</ELEM>
>                </ITEM>
>                <ITEM ATTR="A2">
>                        <ELEM>E2</ELEM>
>                </ITEM>
>                <ITEM ATTR="A3">
>                        <ELEM>E3</ELEM>
>                </ITEM>
>                <ITEM ATTR="A3">
>                        <ELEM>E3</ELEM>
>                </ITEM>
>        </ROOT>
>
> test.xsl:
>
>        <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> version="1.0">
>        <xsl:output method="html" />
>        <xsl:key name="UNIQUE_ATTRS" match="ITEM" use="@ATTR" />
>        <xsl:key name="UNIQUE_ELEMS" match="ITEM" use="ELEM" />
>
>        <xsl:template match="/">
>                <xsl:call-template name="test">
>                        <xsl:with-param name="theKey"
> select="'UNIQUE_ELEMS'"/>
>                        <xsl:with-param name="theName" select="'ELEM'"/>
>                </xsl:call-template>
>                <xsl:call-template name="test">
>                        <xsl:with-param name="theKey"
> select="'UNIQUE_ATTRS'"/>
>                        <xsl:with-param name="theName" select="'ATTR'"/>
>                </xsl:call-template>
>        </xsl:template>
>
>        <xsl:template name="test">
>                <xsl:param name="theKey" select="." />
>                <xsl:param name="theName" select="." />
>                <p>
>                <xsl:value-of select="concat('key: ', $theKey)" /><br/>
>                <xsl:value-of select="concat('node: ', $theName)"
> /><br/>
>                <xsl:text>values:</xsl:text>
>                <xsl:for-each select="ROOT/ITEM[ generate-id() =
> generate-id( key( $theKey, *[local-name()=$theName] ) [1] ) ]">
>                        <xsl:value-of select="." />
>                </xsl:for-each>
>                </p>
>        </xsl:template>
>        </xsl:stylesheet>
>
> Opening "test.xml" returns:
>
>        key: UNIQUE_ELEMS
>        node: ELEM
>        values: E1 E2 E3
>
>        key: UNIQUE_ATTRS
>        node: ATTR
>        values:
>
> Why is it that "A1 A2 A3" is not returned for the ATTR node?  Is there
> any way to write a generic for-each select expression that takes the
> node name & key name and works for both elements and attributes?   Any
> help is greatly appreciated
>
> Thanks,
> -Tyler Waters

--
Regards,
Mukul Gandhi