Leslie Young wrote:

  Hi

> What I need to do is to process 2 elements in a xml:
> dataset1 and dataset2.  If same id exists in dataset2,
> display warning, then display the value from dataset2. If
> not found in dataset2, display dataset1 value.

  You don't need to use a variable for this.  Dynamically
build trees in XSLT 1.0 (Result Tree Fragments) have a
boring restriction: you can't navigate in their structure as
you can for the input tree.  You can just copy them in the
output.  But you can use keys:

    <xsl:key name="ds2" match="Dataset2/Item" use="@ID"/>

    <xsl:template match="/">
      <xsl:apply-templates select="Dataset1/Item" mode="dispatch"/>
    </xsl:template>

    <xsl:template match="Item" mode="dispatch">
      <xsl:variable name="item2" select="key('ds2', @ID)"/>
      <xsl:choose>
        <xsl:when test="$item2">
          <xsl:apply-templates select="$item2"/>
        </xsl:when>
        <xsl:otherwise>
          <xsl:apply-templates select="."/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:template>

    <xsl:template match="Dataset1/Item">
      In 1: <xsl:value-of select="."/>
    </xsl:template>

    <xsl:template match="Dataset2/Item">
      [warn] In 2: <xsl:value-of select="."/>
    </xsl:template>

  Warning: not tested, and written in my MUA...

  Regards,

--drkm

























	
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