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https://issues.apache.org/jira/browse/XERCESJ-1569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13412552#comment-13412552
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Mukul Gandhi commented on XERCESJ-1569:
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I'm reporting my analysis below, by using Xerces XSD 1.1 validator from the SVN.
I get following validation errors when I use your example as it is,
[Warning] x1.xsd:10:100: cvc-xpath.3.13.4.2b: An assert XPath expression such
as ('/root = 'present'') containing / or //, on the schema type
'#AnonType_root', cannot yield a valid result (since an assert tree is rooted
at a parentless element).
[Error] x1.xml:3:76: cvc-assertions-valid: Value '' is not facet-valid with
respect to assertion '/root = 'present''.
[Error] x1.xml:3:76: cvc-assertion: Assertion evaluation ('/root = 'present'')
for element 'root' on schema type '#AnonType_root' did not succeed.
I believe, this is the intention of our implementation for the example you've
posted.
If I change the assertion in your example to,
<xs:assertion test="$value = 'present'"
xpathDefaultNamespace="##targetNamespace" />
(or to, <xs:assertion test="$value = 'present'"/>)
and XML instance document to,
<root xmlns="http://xstest-tns/schema11_D4_3_15";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://xstest-tns/schema11_D4_3_15
npeXerces.xsd">present</root>
I get a right schema validation assessment. This seems correct to me.
Are you using the Xerces XSD 1.1 build from SVN, or the Xerces schema 1.1 beta
release? I think, the SVN code base would have improvements not present in the
published schema 1.1 beta release.
> NPE when validating XML with XML Schema 1.1 (but validation is made in 1.0
> compatibility mode)
> ----------------------------------------------------------------------------------------------
>
> Key: XERCESJ-1569
> URL: https://issues.apache.org/jira/browse/XERCESJ-1569
> Project: Xerces2-J
> Issue Type: Bug
> Components: XML Schema 1.1 Structures
> Reporter: Radu Coravu
> Fix For: 2.11.0
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> I validate an XML:
> <root xmlns="http://xstest-tns/schema11_D4_3_15";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://xstest-tns/schema11_D4_3_15 npeXerces.xsd"/>
> with an XML Schema 1.1:
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> xmlns:tns="http://xstest-tns/schema11_D4_3_15";
> targetNamespace="http://xstest-tns/schema11_D4_3_15";
> elementFormDefault="qualified">
> <xs:element name="root">
> <xs:simpleType>
> <xs:restriction base="xs:string">
> <xs:assertion test="/root = 'present'"
> xpathDefaultNamespace="##targetNamespace" />
> </xs:restriction>
> </xs:simpleType>
> </xs:element>
> </xs:schema>
> Although the schema is 1.1, it is parsed in 1.0-mode.
> The NPE is like:
> java.lang.NullPointerException
> at
> org.apache.xerces.impl.xs.traversers.XSDAbstractTraverser.traverseFacets(XSDAbstractTraverser.java:468)
> at
> org.apache.xerces.impl.xs.traversers.XSDSimpleTypeTraverser.getSimpleType(Unknown
> Source)
> at
> org.apache.xerces.impl.xs.traversers.XSDSimpleTypeTraverser.traverseLocal(Unknown
> Source)
> at
> org.apache.xerces.impl.xs.traversers.XSDElementTraverserXerces.traverseNamedElement(XSDElementTraverserXerces.java:397)
> at
> org.apache.xerces.impl.xs.traversers.XSDElementTraverser.traverseNamedElement(XSDElementTraverser.java:69)
> at
> org.apache.xerces.impl.xs.traversers.XSDElementTraverserXerces.traverseGlobal(XSDElementTraverserXerces.java:240)
> at
> org.apache.xerces.impl.xs.traversers.XSDHandlerXerces.traverseSchemas(XSDHandlerXerces.java:1557)
> at
> org.apache.xerces.impl.xs.traversers.XSDHandlerXerces.parseSchema(XSDHandlerXerces.java:694)
> at org.apache.xerces.impl.xs.XMLSchemaLoader.loadSchema(Unknown Source)
> at org.apache.xerces.impl.xs.XMLSchemaLoader.loadGrammar(Unknown Source)
> at
> org.apache.xerces.parsers.XMLGrammarPreparserXerces.preparseGrammar(XMLGrammarPreparserXerces.java:210)
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