Saxon

My starting point was a properly working XSLT stylesheet. Transformation was set up in Java, no validation in the Saxon Configuration.

My intention was playing around with schema-ware XSLT features. I turned validation on in the Configuration, provided appropriate CatalogResolver and so on.

After successful compilation of my valid XSLT stylesheet xml-cc.xslt – ie. creation of the Templates with above Configuration –, Saxon issues following unexpected validation errors regarding the XSLT file.

Error on line 2 column 16 of xml-cc.xslt:
  SXXP0003   Error reported by XML parser: Document is invalid: no grammar found.: Document
  is invalid: no grammar found.
Error on line 2 column 16 of xml-cc.xslt:
  SXXP0003   Error reported by XML parser: Document root element "xsl:stylesheet", must
  match DOCTYPE root "null".: Document root element "xsl:stylesheet", must match DOCTYPE root "null".
Error on line 6 column 125 of xml-cc.xslt:
  XTTE1512  Cannot validate <Q{.../Transform}stylesheet>: no element declaration available
Error on line 2928 column 18 of xml-cc.xslt:
  XTTE1512  One validation error was reported: Cannot validate <Q{.../Transform}stylesheet>:
  no element declaration available
One validation error was reported: Cannot validate <Q{.../Transform}stylesheet>: no element declaration available
One validation error was reported: Cannot validate <Q{.../Transform}stylesheet>: no element declaration available
; SystemID: file:/D:/projekte/Centris/trafo__SA/src/main/xslt/tf-data/xml-cc.xslt; Line#: 2928; Column#: 18
ValidationException: One validation error was reported: Cannot validate <Q{.../Transform}stylesheet>: no element declaration available
        at net.sf.saxon.type.ValidationFailure.makeException(ValidationFailure.java:406)
        at com.saxonica.ee.validate.ValidatingFilter.reportIfInvalid(ValidatingFilter.java:213)
        at com.saxonica.ee.validate.ValidationStack.endElement(ValidationStack.java:525)
        at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:148)
        at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:148)
        at com.saxonica.ee.validate.AttributeInheritor.endElement(AttributeInheritor.java:62)
        at net.sf.saxon.event.PathMaintainer.endElement(PathMaintainer.java:62)
        at net.sf.saxon.event.DocumentValidator.endElement(DocumentValidator.java:78)
        at net.sf.saxon.event.ReceivingContentHandler.endElement(ReceivingContentHandler.java:541)
        at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
        at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
        at net.sf.saxon.event.Sender.sendSAXSource(Sender.java:439)
        at net.sf.saxon.event.Sender.send(Sender.java:142)
        at net.sf.saxon.functions.DocumentFn.makeDoc(DocumentFn.java:299)
        at net.sf.saxon.functions.DocumentFn$DocumentMappingFunction.mapItem(DocumentFn.java:148)
        at net.sf.saxon.expr.ItemMappingIterator.next(ItemMappingIterator.java:117)
        at net.sf.saxon.om.SequenceIterator.forEachOrFail(SequenceIterator.java:135)
        at net.sf.saxon.expr.sort.DocumentOrderIterator.<init>(DocumentOrderIterator.java:49)
        at net.sf.saxon.functions.DocumentFn.call(DocumentFn.java:119)
        at net.sf.saxon.expr.FunctionCall.iterate(FunctionCall.java:548)
        at net.sf.saxon.expr.Expression.evaluateItem(Expression.java:852)
        at net.sf.saxon.expr.parser.Evaluator$6.evaluate(Evaluator.java:173)
        at net.sf.saxon.expr.SystemFunctionCall.evaluateArguments(SystemFunctionCall.java:454)
        at net.sf.saxon.expr.FunctionCall.iterate(FunctionCall.java:546)
        at net.sf.saxon.expr.Expression.process(Expression.java:949)
        at net.sf.saxon.expr.SystemFunctionCall.process(SystemFunctionCall.java:481)
        at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:754)
        at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:142)
        at net.sf.saxon.expr.instruct.DocumentInstr.evaluateItem(DocumentInstr.java:302)
        at net.sf.saxon.expr.instruct.DocumentInstr.evaluateItem(DocumentInstr.java:45)
        at net.sf.saxon.expr.parser.Evaluator$5.evaluate(Evaluator.java:151)
        at net.sf.saxon.expr.parser.Evaluator$5.evaluate(Evaluator.java:148)
        at net.sf.saxon.expr.LetExpression.eval(LetExpression.java:545)
        at net.sf.saxon.expr.LetExpression.processLeavingTail(LetExpression.java:737)
        at net.sf.saxon.expr.instruct.TemplateRule.applyLeavingTail(TemplateRule.java:384)
        at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:568)
        at net.sf.saxon.trans.rules.TextOnlyCopyRuleSet.process(TextOnlyCopyRuleSet.java:72)
        at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:530)
        at net.sf.saxon.trans.XsltController.applyTemplates(XsltController.java:661)
        at net.sf.saxon.s9api.AbstractXsltTransformer.applyTemplatesToSource(AbstractXsltTransformer.java:360)
        at net.sf.saxon.s9api.XsltTransformer.transform(XsltTransformer.java:349)
        at net.sf.saxon.jaxp.TransformerImpl.transform(TransformerImpl.java:74)

This is how the stylesheet basically starts (note: stylesheet is valid and all import / include / use-package are okay; for the packages I'm using an appropriate saxon-config.xml):

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="3.0" exclude-result-prefixes="#all" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:z="urn:centris:trafo"
  xmlns:cf="urn:centrisag:oms:trafo:fn" xmlns:tfu="urn:centrisag:oms:trafo:pkg:tf-util" xmlns:uuid="java:java.util.UUID"
  xmlns:log="urn:centrisag:oms:trafo:pkg:log" xmlns:ccm="urn:centrisag:oms:trafo:pkg:cc-mod" xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl"
  xmlns:map="http://www.w3.org/2005/xpath-functions/map" xmlns:const="java:ch.centrisag.oms.trafo.transformation.Constants">

  <xsl:import-schema schema-location="syr-norm.xsd"/>
  
  <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

  <xsl:use-package name="urn:centrisag:oms:trafo:pkg:tf-util"/>
  <xsl:use-package name="urn:centrisag:oms:trafo:pkg:cc-mod"/>
  <xsl:use-package name="urn:centrisag:oms:trafo:pkg:log"/>

  <xsl:import href="cmn/logger.xslt"/>
  <xsl:import href="cmn/xml-cc-util.xslt"/>
  <xsl:include href="cmn/xml-cc-doc.xslt"/>
  <xsl:include href="cmn/xml-cc-ptnr.xslt"/>
  ...

Side note: When transforming an invalid (!) XML file with the same setup, the above validation messages regarding the stylesheet don't appear - just the correct validation messages related to the XML file being transformed.

Using the same Java program with another but similar XSLT stylesheet, these unexpected messages didn't appear and transformation ran successfully. One difference I'm aware of: the errorneous transformation is handling XML files without namespace, while the successful transformations acts on XML files with a target namespace.

I'm running Saxon EE 10.3 with Java 1.8 on Windows 10.