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POxslt dynamic / conditional apply-template in function of a variable?
 

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  1. POxslt dynamic / conditional apply-template in function of a variable?
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    <p>I want to display two different XSLT transformations in function of what the user want. The entire XSL file is the same, except for one line.</p> <p>This line should be as it</p> <pre><code>&lt;xsl:template match="/data/peptides/peptide[generate-id()=generate-id(key('byAccSeq', concat(protein_accessions/accession, '|', sequence))[1])]"&gt; </code></pre> <p>or as it</p> <pre><code>&lt;xsl:template match="/data/peptides/peptide"&gt; </code></pre> <p>My first idea was to create two different .xsl files, and to apply them (javascript) in function of a variable value.</p> <pre><code>var xsltProcessor = new XSLTProcessor(); xsltProcessor.importStylesheet(xslDoc); xhtml = xsltProcessor.transformToFragment(xmlDoc,document); </code></pre> <p>However, it is just a line and I would like to maintain only one file. I would like to do something like this</p> <pre><code>&lt;xsl:param name="variable"/&gt; &lt;xsl:choose&gt; &lt;xsl:when test="$variable = 0"&gt; &lt;xsl:template match="/data/peptides/peptide[generate-id()=generate-id(key('byAccSeq', concat(protein_accessions/accession, '|', sequence))[1])]"&gt; ... &lt;/xsl:template&gt; &lt;/xsl:when&gt; &lt;xsl:otherwise&gt; &lt;xsl:template match="/data/peptides/peptide"&gt; ... &lt;/xsl:template&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; </code></pre> <p>But it does not work.</p> <p>trying with the feature "mode" in the xsl:apply-templates, this code neither works</p> <pre><code>&lt;xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt; &lt;xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/&gt; &lt;xsl:key name="byAccSeq" match="/data/peptides/peptide" use="concat(accession, '|', sequence)"/&gt; &lt;xsl:param name="analysis" select="1"/&gt; &lt;xsl:template match="/"&gt; &lt;root&gt;&lt;name&gt;&lt;xsl:value-of select="$analysis"/&gt;&lt;/name&gt;&lt;xsl:apply-templates select="/data/proteins/protein"/&gt;&lt;/root&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/data/proteins/protein"&gt; &lt;xsl:apply-templates select="/data/peptides/peptide[accession=current()/accession]"/&gt; &lt;/xsl:template&gt; &lt;xsl:choose&gt; &lt;xsl:when test="$analysis=1"&gt; &lt;xsl:apply-templates select="/data/peptides/peptide" mode="one"/&gt; &lt;/xsl:when&gt; &lt;xsl:otherwise&gt; &lt;xsl:apply-templates select="/data/peptides/peptide[accession=current()/accession]" mode="two"/&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; &lt;xsl:template match="/data/peptides/peptide" mode="one"&gt; &lt;xsl:copy-of select="."/&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/data/peptides/peptide[generate-id()= generate-id(key('byAccSeq', concat(accession, '|', sequence))[1])]" mode="two"&gt; &lt;xsl:copy-of select="."/&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p>-> <a href="http://www.xsltcake.com/slices/sgWUFu/2" rel="nofollow">http://www.xsltcake.com/slices/sgWUFu/2</a></p> <ul> <li>this code is not correct since xsl:choose cannot be a child of xsl:stylesheet</li> </ul> <p>SOLVED (improved below), this is the code that makes what I wanted</p> <pre><code>&lt;xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt; &lt;xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/&gt; &lt;xsl:key name="byAccSeq" match="/data/peptides/peptide" use="concat(accession, '|', sequence)"/&gt; &lt;xsl:param name="analysis" select="1"/&gt; &lt;xsl:template match="/"&gt; &lt;root&gt; &lt;name&gt; &lt;xsl:value-of select="$analysis"/&gt; &lt;/name&gt; &lt;xsl:apply-templates select="/data/proteins/protein"/&gt; &lt;/root&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/data/proteins/protein"&gt; &lt;xsl:choose&gt; &lt;xsl:when test="$analysis=1"&gt; &lt;xsl:apply-templates select="/data/peptides/peptide[accession=current()/accession]" mode="one"/&gt; &lt;/xsl:when&gt; &lt;xsl:otherwise&gt; &lt;xsl:apply-templates select="/data/peptides/peptide[accession=current()/accession]" mode="two"/&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/data/peptides/peptide" mode="one"&gt; &lt;xsl:copy-of select="."/&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/data/peptides/peptide" mode="two"/&gt; &lt;xsl:template match="/data/peptides/peptide[generate-id()= generate-id(key('byAccSeq', concat(accession, '|', sequence)))]" mode="two"&gt; &lt;xsl:copy-of select="."/&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p>IMPROVED: the final code is much easier to read with much less duplicated code <a href="http://www.xsltcake.com/slices/sgWUFu/6" rel="nofollow">here</a></p> <pre><code>&lt;xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt; &lt;xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/&gt; &lt;xsl:param name="analysis" select="0"/&gt; &lt;xsl:key name="byAcc" match="/data/peptides/peptide" use="accession" /&gt; &lt;xsl:key name="byAccSeq" match="/data/peptides/peptide" use="concat(accession, '|', sequence)"/&gt; &lt;xsl:template match="/"&gt; &lt;root&gt; &lt;name&gt; &lt;xsl:value-of select="$analysis"/&gt; &lt;/name&gt; &lt;xsl:apply-templates select="/data/proteins/protein" /&gt; &lt;/root&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/data/proteins/protein"&gt; &lt;xsl:choose&gt; &lt;xsl:when test="$analysis=1"&gt; &lt;xsl:apply-templates select="key('byAcc',accession)" /&gt; &lt;/xsl:when&gt; &lt;xsl:otherwise&gt; &lt;xsl:apply-templates select="key('byAcc',accession)[ generate-id() = generate-id(key('byAccSeq', concat(accession, '|', sequence)))]" /&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/data/peptides/peptide"&gt; &lt;xsl:copy-of select="."/&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p>I keep the apply-template calls because I need it, but without them (as in the original code, see comments) is even simpler.</p> <p>Thanks again, not only for answering but for teaching XSLT :)</p>
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    1. COHave a look at the improved version of your solution: http://www.xsltcake.com/slices/sgWUFu/5
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