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POXSL processor stack has overflowed - can't understand why
 

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  1. POXSL processor stack has overflowed - can't understand why
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    <p>I'm trying to conditionally display the content of HTML page depending if a document being generated for a recognised company or not.</p> <p>However, the transformation doesn't work and I can't understand why :( I use MSXML3.0 as transformer and oXygen as IDE, which gives the errors I presented below.</p> <p>What I do is to construct a long string of all recognised companies (default and extra if any). I then split them into <code>&lt;token&gt;</code> elements that are stored in the <code>$companiesKnownList</code> variable. To determine if a company is in that list I count how many times it occurs:</p> <pre><code>count($companiesKnownList/token[normalize-space(.) = $productName]) &amp;lt; 1 </code></pre> <p>If it's less than 1, then the company doesn't appear in the <code>$companiesKnownList</code> variable and therefore is not recognized. Otherwise, if it appears in the <code>$companiesKnownList</code> variable once or more times it is a recognized company. Nevertheless, this is where it breaks and displays the following error:</p> <pre><code>Description: Code: 0x80004005 Description: The XSL processor stack has overflowed - probable cause is infinite template recursion. Description: The transformer process ended with code: 1 </code></pre> <p>I've noticed that if my XML has got a recognised company, ex <code>@ProductName="ski"</code> then transformation fails with stack overflow. If I have an unrecognized company, ex <code>@ProductName="bla"</code> the transformation works and text that it isn't a recognized company is displayed.</p> <p>I don't understand what's going wrong with valid companies. I would be more than grateful if you could help me out. I have been staring at it for a day now...without any progress :S</p> <p>Thanks!</p> <p><strong>Here is my stylesheet:</strong></p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:str="http://exslt.org/strings" extension-element-prefixes="msxsl str" version="1.0"&gt; &lt;!-- Taken from http://www.exslt.org/str/functions/tokenize/index.html --&gt; &lt;xsl:import href="str.tokenize.template.xsl"/&gt; &lt;!-- normalize and lowcase product name --&gt; &lt;xsl:variable name="productName" select="normalize-space(translate(/Doc/@ProductName, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'))"/&gt; &lt;!-- default recognised companies for all docs --&gt; &lt;xsl:variable name="defaultRecognisedCompanies" select="'ski, holiday, summer trips'"/&gt; &lt;!-- Determine what companies to generate a doc for --&gt; &lt;xsl:variable name="companiesKnownListRaw"&gt; &lt;xsl:call-template name="recognisedCompanies"/&gt; &lt;/xsl:variable&gt; &lt;xsl:variable name="companiesKnownList" select="msxsl:node-set($companiesKnownListRaw)"/&gt; &lt;!-- Lists recognised companies for a document to be generated for --&gt; &lt;xsl:template name="recognisedCompanies"&gt; &lt;xsl:call-template name="recognisedCompaniesListForDocument"/&gt; &lt;/xsl:template&gt; &lt;xsl:template name="recognisedCompaniesListForDocument"&gt; &lt;xsl:param name="defaultCompanies" select="$defaultRecognisedCompanies"/&gt; &lt;xsl:param name="isUseDefaultsCompanies" select="true()"/&gt; &lt;xsl:param name="extraCompanies" select="''"/&gt; &lt;xsl:variable name="allCompaniesRaw"&gt; &lt;xsl:call-template name="str:tokenize"&gt; &lt;xsl:with-param name="string"&gt; &lt;xsl:choose&gt; &lt;!-- keep default companies --&gt; &lt;xsl:when test="$isUseDefaultsCompanies = 'true'"&gt; &lt;xsl:value-of select="concat($defaultCompanies, ', ', $extraCompanies)"/&gt; &lt;/xsl:when&gt; &lt;!-- discard default companies --&gt; &lt;xsl:otherwise&gt; &lt;xsl:value-of select="$extraCompanies"/&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; &lt;/xsl:with-param&gt; &lt;xsl:with-param name="delimiters" select="','" /&gt; &lt;/xsl:call-template&gt; &lt;/xsl:variable&gt; &lt;!-- Normalize token's value and discard empty values --&gt; &lt;xsl:for-each select="msxsl:node-set($allCompaniesRaw)/token"&gt; &lt;xsl:if test="normalize-space(.) != ''"&gt; &lt;token&gt; &lt;xsl:value-of select="normalize-space(.)"/&gt; &lt;/token&gt; &lt;/xsl:if&gt; &lt;/xsl:for-each&gt; &lt;/xsl:template&gt; &lt;!-- Construct HTML doc. Display appropriate message for a company if it's recognized or not --&gt; &lt;xsl:output method="html" doctype-public="-//W3C//DTD HTML 4.01 Transitional//EN" doctype-system="http://www.w3.org/TR/html4/loose.dtd" encoding="UTF-8" indent="yes"/&gt; &lt;xsl:template match="/Doc"&gt; &lt;html&gt; &lt;xsl:choose&gt; &lt;!-- Not recognised company --&gt; &lt;!-- There is something wrong with the count conditions, and I don't understand what :( --&gt; &lt;xsl:when test="count($companiesKnownList/token[normalize-space(.) = $productName]) &amp;lt; 1"&gt; &lt;body&gt; &lt;div align="center"&gt; This type of company is NOT recognised for this document. &lt;/div&gt; &lt;/body&gt; &lt;/xsl:when&gt; &lt;!-- Recognised company --&gt; &lt;xsl:otherwise&gt; &lt;body&gt; &lt;div align="center"&gt; This type of company is recognised for this document. &lt;/div&gt; &lt;/body&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; &lt;/html&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p><strong>XML</strong> is something simple like:</p> <p>In this example, <code>ski</code> is recognized company, but transformation fails. <code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;Doc ProductName="ski" /&gt;</code></p> <p>In this example, <code>bla</code> is not a recognized company and transformation succeeds with displaying text: "This type of company is NOT recognised for this document." <code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;Doc ProductName="bla" /&gt;</code></p>
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