Joshua Taylor created JENA-593:
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Summary: rdfcat riot warning messages on stdout, not stderr
(invalid output)
Key: JENA-593
URL: https://issues.apache.org/jira/browse/JENA-593
Project: Apache Jena
Issue Type: Bug
Components: Cmd line tools
Affects Versions: Jena 2.11.0, Jena 2.10.1
Reporter: Joshua Taylor
Priority: Critical
The rdfcat bundled in 2.11.0 (and 2.10.1, and probably earlier too) writes RIOT
warning messages on standard output, which means that rdfcat produces invalid
output. E.g., in converting some N3/N-Triples to RDF/XML,
{noformat}
$ echo '<s> <p> "48"^^<http://www.w3.org/2001/XMLSchema#gYear>' | rdfcat -n
/dev/stdin
11:27:26 WARN riot :: [line: 1, col: 9 ] Lexical form '48' not
valid for datatype http://www.w3.org/2001/XMLSchema#gYear
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
xmlns:j.0="file:///dev/">
<rdf:Description rdf:about="file:///dev/s">
<j.0:p rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear";
>48</j.0:p>
</rdf:Description>
</rdf:RDF>
{noformat}
This means that we can't “round trip”:
{noformat}
$ echo '<s> <p> "48"^^<http://www.w3.org/2001/XMLSchema#gYear>' | rdfcat -n
/dev/stdin | rdfcat -x /dev/stdin
11:27:06 ERROR riot :: Content is not allowed in prolog.
Exception in thread "main" org.apache.jena.riot.RiotException: Content is not
allowed in prolog.
at
org.apache.jena.riot.system.ErrorHandlerFactory$ErrorHandlerStd.fatal(ErrorHandlerFactory.java:136)
at
org.apache.jena.riot.lang.LangRDFXML$ErrorHandlerBridge.fatalError(LangRDFXML.java:243)
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.XMLDocumentScannerImpl$PrologDispatcher.dispatch(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at
com.hp.hpl.jena.rdf.arp.impl.RDFXMLParser.parse(RDFXMLParser.java:151)
at com.hp.hpl.jena.rdf.arp.ARP.load(ARP.java:119)
at org.apache.jena.riot.lang.LangRDFXML.parse(LangRDFXML.java:142)
at
org.apache.jena.riot.RDFParserRegistry$ReaderRIOTFactoryImpl$1.read(RDFParserRegistry.java:142)
at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:818)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:258)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:244)
at
org.apache.jena.riot.adapters.RDFReaderRIOT.read(RDFReaderRIOT.java:69)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:274)
at
org.apache.jena.riot.adapters.AdapterFileManager.readModelWorker(AdapterFileManager.java:302)
at com.hp.hpl.jena.util.FileManager.readModel(FileManager.java:362)
at jena.rdfcat.readInput(rdfcat.java:375)
at jena.rdfcat$ReadAction.run(rdfcat.java:552)
at jena.rdfcat.go(rdfcat.java:278)
at jena.rdfcat.main(rdfcat.java:260)
{noformat}
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