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In some <Article> elements, the <Comment> element is empty (usually it
contains another <Article> element or set of <Article> elements. When
<Comment> is empty, I want to bypass the transformations done in the Comment
template below. I cannot seem to get the code to ignore empty <Comment>
elements.
Input:
<Article>
<Person>Gerald M. van Zanten</Person>
<Title>New issues: Slovakia</Title>
<IssueName>Sep/Oct</IssueName>
<IssueNumber>5</IssueNumber>
<Year>2007</Year>
<Page>37</Page>
<Comment/> <!-- WHEN EMPTY ELEMENT MATCHED, IGNORE
</Article>Template: <xsl:template match="Comment"> <xsl:if test="not(empty(.))"> <!-- THIS DOES NOT SEEM TO WORK <!-- <xsl:if test="Article"> NOR DOES THIS --> <span class="comment"> <xsl:text> {Comment: </xsl:text> <xsl:for-each-group select="Article" group-by="Person"> <xsl:sort select="Year"></xsl:sort> <xsl:sort select="IssueNumber" data-type="number"></xsl:sort> <xsl:sort select="Page"></xsl:sort> <xsl:sort select="Title" collation="{$sorting-collation}"></xsl:sort> <!-- <xsl:sort select="Person" collation="{$sorting-collation}"></xsl:sort> --> <xsl:if test="not(Title eq preceding-sibling::Article[1]/Title)"> <span class="comment-title"> <xsl:apply-templates select="Title"></xsl:apply-templates> </span> </xsl:if> <xsl:apply-templates select="Person"></xsl:apply-templates> <!--and for each citation--> <!-- Dump duplicate citations for 1939-1999 data --> <xsl:if test="not(. eq preceding-sibling::Article[1])"> <xsl:call-template name="citation"></xsl:call-template> </xsl:if> </xsl:for-each-group> <xsl:text>} </xsl:text> </span> </xsl:if> </xsl:template>
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