Pattern syntax Error XTSE0340

iceandrews · March 28th, 2011, 10:19 AM

I've got a weird situation that I can't seem to figure out. I'm trying to run a simple transformation on a xhtml document. I'm getting and error when I run it that states, " XTSE0340: XSLT Pattern syntax error at char 51 on line 12 in {...ors']/following-sibling::ta...}: Axis in pattern must be child or attribute" However, I've tested the XPath multiple times and everything looks good to me. It resolves on the document when I run it separately, but in the XSLT it fails. I'm running Saxon 8.9 using Stylus Studio, XSLT 2.0. I've tried it under a couple different processors, even 1.0 and still won't work. I cannot think of a reason why it would be requiring a child or attribute. What am I doing wrong?

The XPath in question that is failing is this.

Code:

font[descendant::text() = 'Consolidated Errors']/following-sibling::table[1]

The input document is as follows. (Sorry it's a bit long but I trimmed it down best I could)

Code:

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <body>
        <table cellpadding="2" cellspacing="0" border="1" width="80%" align="center">
            <tr bgcolor="#C0C0C0">
                <td>
                    <font face="Geneva,Arial">
                        <b>Line of Business</b>
                    </font>
                </td>
                <td>
                    <font face="Geneva,Arial">
                        <b>Total # of Messages</b>
                    </font>
                </td>
                <td>
                    <font face="Geneva,Arial">
                        <b># of Passed Messages</b>
                    </font>
                </td>
                <td>
                    <font face="Geneva,Arial">
                        <b># of Failed Messages</b>
                    </font>
                </td>
                <td>
                    <font face="Geneva,Arial">
                        <b>Total # of Errors in Failed Messages</b>
                    </font>
                </td>
            </tr>
        </table>
        <table cellpadding="0" cellspacing="1" width="98%" align="center" bgcolor="#000000">
            <tr valign="top">
                <td>
                    <table cellpadding="2" cellspacing="0" width="100%" bgcolor="#C0C0C0">
                        <tr valign="top">
                            <td width="200">
                                <font face="Geneva,Arial" size="-1">
                                    <b>File (PolSymbol_SubmissionNo)</b>
                                </font>
                            </td>
                            <td width="40" align="right">
                                <font face="Geneva,Arial" size="-1">
                                    <b>Line</b>
                                </font>
                            </td>
                            <td width="40" align="right">
                                <font face="Geneva,Arial" size="-1">
                                    <b>Col</b>
                                </font>
                            </td>
                            <td>
                                <font face="Geneva,Arial" size="-1">
                                    <b>Error</b>
                                </font>
                            </td>
                        </tr>
                    </table>
                </td>
            </tr>
        </table>
        <font face="Geneva,Arial">
            <p align="center">
                <b>
                    <u>Consolidated Errors</u>
                </b>
            </p>
        </font>
        <table cellpadding="0" cellspacing="1" width="98%" align="center" class="nested">
            <th valign="top" colspan="4" align="left">
                <font face="Geneva,Arial" size="3">Farm General Liability</font>
            </th>
            <tr>
                <td align="center">
                    <font size="-2">
                        <b>Example</b>
                    </font>
                </td>
                <td>
                    <font size="-2">
                        <b>Line</b>
                    </font>
                </td>
                <td>
                    <font size="-2">
                        <b>Occurences</b>
                    </font>
                </td>
                <td>
                    <font size="-2">
                        <b>Error</b>
                    </font>
                </td>
            </tr>
            <tr>
                <td>
                    <font size="-1">AFL_5279884.xml</font>
                </td>
                <td>
                    <font size="-1">
                        <a href="files/AFL_5279884.html#l4920">4920</a>
                    </font>
                </td>
                <td align="center">
                    <font size="-1">1</font>
                </td>
                <td>
                    <font size="-1">Type 'agrifgl:ENT_Comment_Category_Type' that is used in xsi:type is not derived from the type of element 'Category'</font>
                </td>
            </tr>
        </table>
    </body>
</html>

And the full XSLT is below.

Code:

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" indent="yes" />
    <xsl:strip-space elements="*" />

    <xsl:template match="/">
        <Errors>
            <xsl:apply-templates select="//font[descendant::text() = 'Consolidated Errors']/following-sibling::table[1]"/>
        </Errors>
    </xsl:template>

    <!-- This match fails -->
    <xsl:template match="font[descendant::text() = 'Consolidated Errors']/following-sibling::table[1]">
        <xsl:apply-templates select="tr[td[1]/font[contains(.,'xml')]]" />
    </xsl:template>

</xsl:stylesheet>

Martin Honnen · March 28th, 2011, 10:47 AM

A step in an XSLT match pattern can't use following-sibling, in a match pattern that is only allowed in predicate.
As you seem to have ensured in your apply-templates that only those table elements are processed you could simply

Code:

<xsl:template match="table">...</table>

If you think you need to restrict both the select expression of your apply-templates and the match pattern then

Code:

<xsl:template match="table[preceding-sibling::font[descendant::text() = ...]]">...</xsl:template>

iceandrews · March 28th, 2011, 10:53 AM

For the short term, I did exactly what you suggested first. Since I've restricted my node set via the apply templates, I simply match on the "table" element. This work fine for now, but I will need to expand that when I have other matches on "table" nodes.

I didn't realize you couldn't do that in a match pattern. I've been doing to too long not to have come across that by now you'd think :) Appreciate the simple observation and help.

samjudson · March 28th, 2011, 11:00 AM

In the xsl:template pattern attribute you can't use axis like following-sibling - any relationships need to be strict child/parent ones.

When trying to find a template pattern to match again, it will actually be at the table element, it will then try and find a pattern that matches it by walking back up the pattern expression (so in your case from table, to following-sibling axis, then to font). Trying to move backwards up the following-sibling axis would require it to work the other way (starting at font and working down).

If you just want to have a template that matches the apply-templates above then use modes.

Code:

<xsl:template match="/">
        <Errors>
            <xsl:apply-templates select="//font[descendant::text() = 'Consolidated Errors']/following-sibling::table[1]" mode="errormode"/>
        </Errors>
    </xsl:template>

    <xsl:template match="table" mode="errormode">
        <xsl:apply-templates select="tr[td[1]/font[contains(.,'xml')]]" />
    </xsl:template>