Is validation of XSLT 3.0 stylesheets supported?

[martin-honnen]

I have tried to use the sample app to validate an XSLT 3.0 stylesheet against the W3C XSD 1.1 schema for XSLT 3, the app crashes (it seems when/after schemas = sf.newSchema(schemaSources);).

Is XSD 1.1 based validation supported by the used Xerces version? Or what else could be the reason for the crash?

Command line arguments and stack trace:

PS C:\Users\marti\source\repos\XmlResolverValidationTest1\XmlResolverValidationTest1> java -jar C:\Users\marti\OneDrive\Documents\xmlresolver-sampleapp-3.0.1\sampleapp-3.0.1.jar parse -xsd https://www.w3.org/TR/xslt-30/schema-for-xslt30.xsd .\xslt3-sample2.xsl
Performing a non-validating parse of .\xslt3-sample2.xsl
Continuing with XML Schema validation with:
        https://www.w3.org/TR/xslt-30/schema-for-xslt30.xsd
Using the XML Resolver with the following catalogs:
        jar:file:/C:/Users/marti/OneDrive/Documents/xmlresolver-sampleapp-3.0.1/lib/xmlresolver-3.0.1-data.jar!/org/xmlresolver/catalog.xml
OASIS XML Catalogs processing instruction catalogs will be used
The resolver will not cache resources

? Resolved: xsl:stylesheet (file:///C:/Users/marti/source/repos/XmlResolverValidationTest1/XmlResolverValidationTest1/xslt3-sample2.xsl)
Parse complete
Exception in thread "main" java.lang.NullPointerException
        at java.net.URI$Parser.parse(URI.java:3041)
        at java.net.URI.<init>(URI.java:588)
        at org.xmlresolver.CatalogResolver.resolveNamespace(CatalogResolver.java:242)
        at org.xmlresolver.Resolver.resolveResource(Resolver.java:121)
        at org.xmlresolver.example.ChattyResolver.resolveResource(ChattyResolver.java:148)
        at org.apache.xerces.util.DOMEntityResolverWrapper.resolveEntity(Unknown Source)
        at org.apache.xerces.impl.XMLEntityManager.resolveEntity(Unknown Source)
        at org.apache.xerces.impl.xs.XMLSchemaLoader.resolveDocument(Unknown Source)
        at org.apache.xerces.impl.xs.traversers.XSDHandler.resolveSchema(Unknown Source)
        at org.apache.xerces.impl.xs.traversers.XSDHandler.constructTrees(Unknown Source)
        at org.apache.xerces.impl.xs.traversers.XSDHandler.parseSchema(Unknown Source)
        at org.apache.xerces.impl.xs.XMLSchemaLoader.loadSchema(Unknown Source)
        at org.apache.xerces.impl.xs.XMLSchemaLoader.loadGrammar(Unknown Source)
        at org.apache.xerces.impl.xs.XMLSchemaLoader.loadGrammar(Unknown Source)
        at org.apache.xerces.jaxp.validation.XMLSchemaFactory.newSchema(Unknown Source)
        at org.xmlresolver.example.SampleApp.parse(SampleApp.java:264)
        at org.xmlresolver.example.SampleApp.process(SampleApp.java:108)
        at org.xmlresolver.example.SampleApp.main(SampleApp.java:74)

The XSLT 3.0 sample is

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="3.0"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  exclude-result-prefixes="#all"
  expand-text="yes">

  <xsl:output method="html" indent="yes" html-version="5"/>

  <xsl:mode on-no-match="shallow-copy"/>

  <xsl:template match="/" name="xsl:initial-template">
    <xsl:next-match/>
    <xsl:comment xmlns:saxon="http://saxon.sf.net/">Run with {system-property('xsl:product-name')} {system-property('xsl:product-version')} {system-property('Q{http://saxon.sf.net/}platform')}</xsl:comment>
  </xsl:template>

</xsl:stylesheet>