variables in XSLTOperation

[tolliver]

Hi,

Is it possible to use an XSLT via XSLTOperation (ro.sync.ecss.extensions.commons.operations.XSLTOperation) in an Author action to find a value in one part of the document and then use it in a fragment?

This is template I'm trying to use:

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<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" xpath-default-namespace="http://docbook.org/ns/docbook">

    <xsl:variable name="keyImage" select="//imagedata[@fileref='aGraphic.png']/ancestor::inlinemediaobject/@xml:id/string()"/>

    

    <xsl:template match="para">

    <xref linkend="{$keyImage}" role="key_include" xmlns="http://docbook.org/ns/docbook"/>

    </xsl:template>

</xsl:stylesheet>

to find the name of an image and use it in an xref. But the @linkend is empty after the action has been run.

Thanks,

Tolliver

[alex_jitianu]

Hi Tolliver,

I suspect that the XSLTOperation's sourceLocation parameter is empty. As a result, the input for the stylesheet will be the element at caret position and you will not be able to access any other nodes from the original document.

So the first step is to set parameter sourceLocation to be the root element: /*. But now your template will match on every para from the document so it will have to be changed into something like:

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<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"

    xpath-default-namespace="http://docbook.org/ns/docbook">

    

    <xsl:template match="imagedata[@fileref='images/lake.jpeg']">

        <xref linkend="{ancestor::inlinemediaobject/@xml:id/string()}" role="key_include" xmlns="http://docbook.org/ns/docbook"/>

    </xsl:template>

    

    <xsl:template match="text()"/>

</xsl:stylesheet>

If you need to pass as a sourceLocation an ancestor of the caret element and still be able to write a template that matches that caret element, you can do it like this:

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<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"

    xpath-default-namespace="http://docbook.org/ns/docbook" xmlns:saxon="http://saxon.sf.net/" exclude-result-prefixes="saxon">

    

    <xsl:param name="currentElementLocation"/>

    

    <xsl:template match="/">

        <xsl:apply-templates select="saxon:eval(saxon:expression($currentElementLocation))"/>

    </xsl:template>

    

    <xsl:template match="para">

        <xsl:variable name="keyImage" select="//imagedata[@fileref='images/lake.jpeg']/ancestor::inlinemediaobject/@xml:id/string()"/>

        <xref linkend="{$keyImage}" role="key_include" xmlns="http://docbook.org/ns/docbook"/>

    </xsl:template>    

</xsl:stylesheet>

oXygen will automatically bind parameter currentElementLocation to the XPath location of the caret element relative to the source element (provided that the source element is an ancestor of the caret element).

Best regards,
Alex

[alex_jitianu]

Hi Tolliver,

You may also find it interesting to save your script file in the directory of your framework and use as *script* the following driver:

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<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

    version="2.0">

    <xsl:import href="xslt_operation.xsl"/>

</xsl:stylesheet>

The import is resolved relative to the framework directory. This way is much easier to make changes in your script and test them by immediately running the operation.

Best regards,
Alex