[JENA-394] RDF/XML parser incorrectly disallows some Unicode characters

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: Jena 2.10.0
• Component/s: RDF/XML
• Assignee: Andy Seaborne
• Reporter: Richard Cyganiak
• Created: 12/Feb/13 18:16
• Updated: 12/Feb/13 21:34
• Resolved: 12/Feb/13 20:54

Description

The Unicode character 'KATAKANA MIDDLE DOT' (U+30FB) in the local part of a property name causes a parse exception in the RDF/XML parser. This seems to be incorrect, as the character is allowed in IRIs and is allowed in XML local names, as far as I can tell.

Example file:

<?xml version="1.0" encoding="utf-8" ?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://example.com/ns#">
<rdf:Description rdf:about="#this">
<隣接自治体・行政区 rdf:resource="#that"/>
</rdf:Description>
</rdf:RDF>

The offending character is the “dot” in the middle of the property name.

rdfcat execution with stack trace:

$ bin/rdfcat ~/katakana-middle-dot.xml
18:09:37 ERROR riot :: Element type "?????" must be followed by either attribute specifications, ">" or "/>".
Exception in thread "main" org.apache.jena.riot.RiotException: Element type "?????" must be followed by either attribute specifications, ">" or "/>".
at org.apache.jena.riot.system.ErrorHandlerFactory$ErrorHandlerStd.fatal(ErrorHandlerFactory.java:132)
at org.apache.jena.riot.lang.LangRDFXML$ErrorHandlerBridge.fatalError(LangRDFXML.java:242)
at com.hp.hpl.jena.rdf.arp.impl.ARPSaxErrorHandler.fatalError(ARPSaxErrorHandler.java:48)
at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.warning(XMLHandler.java:209)
at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.fatalError(XMLHandler.java:239)
at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at com.hp.hpl.jena.rdf.arp.impl.RDFXMLParser.parse(RDFXMLParser.java:151)
at com.hp.hpl.jena.rdf.arp.ARP.load(ARP.java:119)
at org.apache.jena.riot.lang.LangRDFXML.parse(LangRDFXML.java:141)
at org.apache.jena.riot.RDFParserRegistry$ReaderRIOTFactoryImpl$1.read(RDFParserRegistry.java:148)
at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:749)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:258)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:244)
at org.apache.jena.riot.adapters.RDFReaderRIOT.read(RDFReaderRIOT.java:65)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:276)
at com.hp.hpl.jena.util.FileManager.readModelWorker(FileManager.java:403)
at com.hp.hpl.jena.util.FileManager.readModel(FileManager.java:342)
at jena.rdfcat.readInput(rdfcat.java:375)
at jena.rdfcat$ReadAction.run(rdfcat.java:552)
at jena.rdfcat.go(rdfcat.java:278)
at jena.rdfcat.main(rdfcat.java:260)