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Posted to dev@jena.apache.org by "Andy Seaborne (JIRA)" <ji...@apache.org> on 2018/05/04 09:09:00 UTC
[jira] [Comment Edited] (JENA-341) Jena breaks with Xerces 2.11.0
(XML Schema 1.1 branch)
[ https://issues.apache.org/jira/browse/JENA-341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16463591#comment-16463591 ]
Andy Seaborne edited comment on JENA-341 at 5/4/18 9:08 AM:
------------------------------------------------------------
Apaxche Xerces is no longer a dependency requirement for Apache Jena. JENA-1537 extracts the Xerces validation code for Jena's use and removes the dependency on Xerces as the XML parser.
Any XML parser can be used with Jena (defaulting to the JDK-provided one) through the usual mechanism for adding to the application.
was (Author: andy.seaborne):
Apaxche Xerces is no longer a dependency requirement for Apache Jena. JENA-1537 extracts the Xerces validation code for Jena's use and removes the dependency on Xerces.
Any XML parser can be used with Jena (defaulting to the JDK-provided one) through the usual mechanism for adding to the application.
> Jena breaks with Xerces 2.11.0 (XML Schema 1.1 branch)
> ------------------------------------------------------
>
> Key: JENA-341
> URL: https://issues.apache.org/jira/browse/JENA-341
> Project: Apache Jena
> Issue Type: Bug
> Components: Jena
> Reporter: Radu Coravu
> Assignee: Andy Seaborne
> Priority: Major
> Fix For: Jena 3.8.0
>
> Original Estimate: 3h
> Remaining Estimate: 3h
>
> Running Jena with a Xerces 2.11.0 build which is XML Schema 1.1 aware (the xerces-java-xml-schema-1.1-dev branch) breaks with a NPE:
> ERROR [my.package.MyClass:105] An exception occured during data loading
> java.lang.NullPointerException
> at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.getActualValue(Unknown Source)
> at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.validate(Unknown Source)
> at com.hp.hpl.jena.datatypes.xsd.XSDDatatype.parse(XSDDatatype.java:272)
> at com.hp.hpl.jena.graph.impl.LiteralLabelImpl.setValue(LiteralLabelImpl.java:213)
> at com.hp.hpl.jena.graph.impl.LiteralLabelImpl.setLiteralLabel_1(LiteralLabelImpl.java:107)
> at com.hp.hpl.jena.graph.impl.LiteralLabelImpl.<init>(LiteralLabelImpl.java:96)
> at com.hp.hpl.jena.graph.impl.LiteralLabelFactory.createLiteralLabel(LiteralLabelFactory.java:28)
> at com.hp.hpl.jena.graph.Node.createLiteral(Node.java:101)
> at com.hp.hpl.jena.rdf.arp.JenaReader.convert(JenaReader.java:120)
> at com.hp.hpl.jena.rdf.arp.JenaReader.convert(JenaReader.java:143)
> at com.hp.hpl.jena.rdf.arp.JenaHandler.statement(JenaHandler.java:89)
> at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.triple(XMLHandler.java:86)
> at com.hp.hpl.jena.rdf.arp.impl.ParserSupport.triple(ParserSupport.java:228)
> at com.hp.hpl.jena.rdf.arp.states.WantDescription.aPredAndObj(WantDescription.java:116)
> at com.hp.hpl.jena.rdf.arp.states.WantPropertyElement.theObject(WantPropertyElement.java:213)
> at com.hp.hpl.jena.rdf.arp.states.WantTypedLiteral.endElement(WantTypedLiteral.java:50)
> at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.endElement(XMLHandler.java:133)
> at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
> at org.apache.xerces.impl.XMLNamespaceBinder.handleEndElement(Unknown Source)
> at org.apache.xerces.impl.XMLNamespaceBinder.endElement(Unknown Source)
> at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.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.DTDConfiguration.parse(Unknown Source)
> at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
> at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
> at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
> at com.hp.hpl.jena.rdf.arp.impl.RDFXMLParser.parse(RDFXMLParser.java:155)
> at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:173)
> at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:160)
> at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:232)
> at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:235)
> at my.package.MyClass.load(MyClass.java:97)
> The org.apache.xerces.impl.validation.ValidationState you are passing to the Xerces XSSimpleTypeDecl has a NULL TypeValidatorHelper and the Xerces build which is XML Schema 1.1 aware looks a lot in the TypeValidatorHelper to see if it is running in XML Schema 1.1 compatibility mode like:
> final String options = context.getTypeValidatorHelper().isXMLSchema11() ? "Xbh" : "X";
> The class org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl is an internal Xerces class. Maybe you should try breaking dependencies to internal classes.
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