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    <p><strong>This transformation</strong>:</p> <pre><code>&lt;xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt; &lt;xsl:output omit-xml-declaration="yes" indent="yes"/&gt; &lt;xsl:strip-space elements="*"/&gt; &lt;xsl:template match="node()|@*"&gt; &lt;xsl:copy&gt; &lt;xsl:apply-templates select="node()|@*"/&gt; &lt;/xsl:copy&gt; &lt;/xsl:template&gt; &lt;xsl:template match="ntig[not(*/term[string-length()&gt;0])]"/&gt; &lt;xsl:template match="langSet[not(*/*/term[string-length()&gt;0])]"/&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p><strong>when applied on the provided XML document</strong>:</p> <pre><code>&lt;body&gt; &lt;termEntry id="1"&gt; &lt;langSet lang="eng-us"&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;/langSet&gt; &lt;langSet lang="ara-ae"&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;123&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;/langSet&gt; &lt;/termEntry&gt; &lt;termEntry id="2"&gt; &lt;langSet lang="eng-us"&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;123&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;/langSet&gt; &lt;/termEntry&gt; &lt;/body&gt; </code></pre> <p><strong>produces the wanted result</strong>:</p> <pre><code>&lt;body&gt; &lt;termEntry id="1"&gt; &lt;langSet lang="ara-ae"&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;123&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;/langSet&gt; &lt;/termEntry&gt; &lt;termEntry id="2"&gt; &lt;langSet lang="eng-us"&gt; &lt;ntig&gt; &lt;termGrp&gt; &lt;term&gt;123&lt;/term&gt; &lt;/termGrp&gt; &lt;/ntig&gt; &lt;/langSet&gt; &lt;/termEntry&gt; &lt;/body&gt; </code></pre> <p><strong>Explanation</strong>:</p> <ol> <li><p>The identity rule (template) copies every node "as-is".</p></li> <li><p>The template overriding the identity rule for <code>ntig[not(*/term[string-length()&gt;0])]</code> has an empty body -- this effectively ignores (deletes) any <code>ntig</code> element that doesn't have at lest one <code>term</code> grandchild with positive <code>string-length()</code>.</p></li> <li><p>The template overriding the identity rule for <code>langSet[not(*/*/term[string-length()&gt;0])]</code> has an empty body -- this effectively ignores (deletes) any <code>langSet</code> element that doesn't have at lest one <code>term</code> great-grandchild with positive <code>string-length()</code>.</p></li> </ol> <p><strong>Do note</strong> that specifying templates like this violates the definition of the problem:</p> <pre><code>&lt;xsl:template match="ntig[descendant::term[. = '']]"/&gt; &lt;xsl:template match="langSet[not(descendant::term[. != ''])]"/&gt; </code></pre> <p>Because the requirement is to "if the value in is null\empty, delete its <em>grandparent</em> node". </p> <p>However, the first template above deletes not only the grand-parent <code>ntig</code>, but <em>any ancestor</em> <code>ntig</code>.</p> <p><strong>The current solution does not commit such a mistake</strong>.</p>
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    1. POHow to remove certain nodes in an xml using xslt?
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    1. USDimitre Novatchev
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    1. CO@Dimitre: Hi Dimitre, I wanted to test by adding '<?xml-stylesheet type="text/xsl" href="FM_Dimi.xsl"?> ' And after click the xml, only text values are displayed **123 123** Instead of expected codes... Do I need to add more references? By the way, I wonder if I can generate the new xml instead of viewing. And How? By **not** using other programing langugages, say java
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    2. CO@Jackie: this is because the PI gets re-generated and IE (and probably other browsers) interprete this as an endless loop... The proper way to develop with XSLT is by using an XSLT IDE. I am using both XSelerator and oXygen and I never use a browser to run/test an XSLT transformation. Other, uglier ways are to invoke the particular XSLT processor from the command line.
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    3. CO@Dimitre, +1 for being absolutely right although I suspect you are splitting hairs in this particular case :)
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