[XERCESJ-1583] NullPointerException when parsing an instance that has a XSD 1.0 schema with 'inheritable' attribute

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.11.0
• Fix Version/s: 2.12.0
• Component/s: XML Schema 1.0 Structures, XML Schema 1.1 Structures
• Assignee: Michael Glavassevich
• Reporter: Octavian Nadolu
• Created: 03/Sep/12 13:44
• Updated: 16/Apr/18 07:29
• Resolved: 04/Sep/12 06:32

Description

If I parse the instance.xml file using the following java code, I get an NullPointerException. I tested on the xml-schema-1.1-dev branch.

----------Java code----------------------
XMLReader parser = new org.apache.xerces.parsers.SAXParser();
parser.setFeature(Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_VALIDATION_FEATURE, true);
parser.parse("file:/C:/instance.xml");
--------------------------------------

----------------instance.xml------------------
<BookStore xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="schema.xsd">
</BookStore>
-------------------------------------------------------

--------------------schema.xsd----------------
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="BookStore">
<xs:complexType>
<xs:attribute name="lang" inheritable="true" type="xs:string"/>
</xs:complexType>
</xs:element>
</xs:schema>
--------------------------------------------------------

-----------NullPointerException -------------------------------
Exception in thread "main" java.lang.NullPointerException
at org.apache.xerces.impl.xs.traversers.XSDAttributeTraverser.traverseLocal(XSDAttributeTraverser.java:144)
at org.apache.xerces.impl.xs.traversers.XSDAbstractTraverser.traverseAttrsAndAttrGrps(XSDAbstractTraverser.java:796)
at org.apache.xerces.impl.xs.traversers.XSDComplexTypeTraverser.processComplexContent(XSDComplexTypeTraverser.java:1639)
at org.apache.xerces.impl.xs.traversers.XSDComplexTypeTraverser.traverseComplexTypeDecl(XSDComplexTypeTraverser.java:485)
at org.apache.xerces.impl.xs.traversers.XSDComplexTypeTraverser.traverseLocal(XSDComplexTypeTraverser.java:181)
at org.apache.xerces.impl.xs.traversers.XSDElementTraverser.traverseNamedElement(XSDElementTraverser.java:393)
at org.apache.xerces.impl.xs.traversers.XSDElementTraverser.traverseGlobal(XSDElementTraverser.java:241)
at org.apache.xerces.impl.xs.traversers.XSDHandler.traverseSchemas(XSDHandler.java:1629)
at org.apache.xerces.impl.xs.traversers.XSDHandler.parseSchema(XSDHandler.java:724)
at org.apache.xerces.impl.xs.XMLSchemaLoader.loadSchema(XMLSchemaLoader.java:644)
at org.apache.xerces.impl.xs.XMLSchemaValidator.findSchemaGrammar(XMLSchemaValidator.java:3072)
at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:2259)
at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:859)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:283)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(XMLNSDocumentScannerImpl.java:733)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1754)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:324)
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:890)
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:813)
at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:108)
at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1129)
at XercesParse.main(XercesParse.java:70)
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