Bug #3635: passing stylesheet parameters via fn:transform causes an exception - Saxon - Saxonica Developer Community

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Bug #3635

closed

passing stylesheet parameters via fn:transform causes an exception

Added by Liam Quin about 6 years ago. Updated about 6 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Michael Kay

Category:

Diagnostics

Sprint/Milestone:

Start date:

2018-01-21

Due date:

% Done:

100%

Estimated time:

Legacy ID:

Applies to branch:

9.8, trunk

Fix Committed on Branch:

9.8, trunk

Fixed in Maintenance Release:

9.8.0.8

Platforms:

Description

If i run the enclosed stylesheet, i get an error; this is a stripped-down example. I get what looks like the same error if i try to pass an option map to fn:serialize. In both cases i can work round it by passing an XML fragment.

I also get the same (or a similr, didn't check) error with Saxon EE run from Oxygen XML Editor version 19 (didn't try earlier versions).

java -jar /home/lee/packages/saxonpe/saxon9pe.jar exception.xsl exception.xsl

java.lang.RuntimeException: Internal error evaluating template rule at line 7 in module file:/home/lee/mulberry/balisage-proceedings/deliver/exception.xsl

at net.sf.saxon.expr.instruct.TemplateRule.applyLeavingTail(TemplateRule.java:360)

at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:502)

at net.sf.saxon.Controller.transformDocument(Controller.java:2402)

at net.sf.saxon.Controller.transform(Controller.java:1970)

at net.sf.saxon.s9api.Xslt30Transformer.applyTemplates(Xslt30Transformer.java:593)

at net.sf.saxon.Transform.processFile(Transform.java:1257)

at net.sf.saxon.Transform.doTransform(Transform.java:780)

at net.sf.saxon.Transform.main(Transform.java:81)

Caused by: java.lang.ClassCastException: net.sf.saxon.value.StringValue cannot be cast to net.sf.saxon.value.QNameValue

at net.sf.saxon.functions.TransformFn.call(TransformFn.java:639)

at net.sf.saxon.expr.FunctionCall.iterate(FunctionCall.java:547)

at net.sf.saxon.expr.instruct.ForEach.processLeavingTail(ForEach.java:434)

at net.sf.saxon.expr.instruct.TemplateRule.applyLeavingTail(TemplateRule.java:347)

... 7 more

Fatal error during transformation: java.lang.RuntimeException: Internal error evaluating template rule at line 7 in module file:/home/lee/mulberry/balisage-proceedings/deliver/exception.xsl

Files

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exception-two.xsl (351 Bytes) exception-two.xsl	called from exception.xsl	Liam Quin, 2018-01-21 02:22
exception.xsl (467 Bytes) exception.xsl	main stylesheet	Liam Quin, 2018-01-21 02:22

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Updated by Martin Honnen about 6 years ago

I think you have three problems in your use of transform@, the first is that you need to use a @QName (and not a string) for the parameter name, the second is that the transform function returns a map where you find the primary result as the map item named output and the third is that you use xsl:copy (which only makes a shallow copy) instead of xsl:copy-of (which creates a deep copy) when you try to output the result of the function. So what you want is

<xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
	xmlns:xs="http://www.w3.org/2001/XMLSchema">

	<xsl:template match="/">
		<xsl:copy-of
			select="
				transform(
				map {
					'stylesheet-location': 'test201801210102.xsl',
					'source-node': /,
					'stylesheet-params': map {
						QName('', 'garment'): 'hoodie',
						QName('', 'colour'): 'black'
					}
				}
				)?output"
		/>
	</xsl:template>

</xsl:stylesheet>

I think.

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