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https://issues.apache.org/jira/browse/JENA-487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13701893#comment-13701893
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Andy Seaborne commented on JENA-487:
------------------------------------
Take a look at the Jena code - it isn't retain any state across calls so, in
theory called in two batches or one makes no difference. I'm wondering if this
usage is corrupting something within Java or excessive memory use is causing
some issue.
Can you identify which file is causing the problem?
How big is each file?
> CannotEncodeCharacterException when writing lots of instances to file via
> RDFWriter
> -----------------------------------------------------------------------------------
>
> Key: JENA-487
> URL: https://issues.apache.org/jira/browse/JENA-487
> Project: Apache Jena
> Issue Type: Bug
> Components: RDF/XML
> Affects Versions: Jena 2.10.1
> Environment: Windows 64 bit
> Reporter: Rune Stilling
> Priority: Minor
>
> I'm using the following code to write a model to a file:
> RDFWriter w = model.getWriter("RDF/XML"); //-ABBREV (abbrev will
> produce rdf:seq, the other wont)
> w.setProperty("showXMLDeclaration", "true");
> w.setProperty("showDoctypeDeclaration", "true");
> w.setProperty("xmlbase", xmlBase);
> File saveFile = new File(fileName);
> FileOutputStream fso = null;
> try {
> fso = new FileOutputStream(saveFile);
> } catch (Exception e) {
> e.printStackTrace();
> }
> w.write(model, fso, "RDF/XML");
> fso.close();
> If I run this with 10000 instances it works, if I run it with 20000 instances
> the write fails with the following exception:
> com.hp.hpl.jena.shared.CannotEncodeCharacterException: cannot encode (char) ↔
> in context XML
> at
> com.hp.hpl.jena.rdf.model.impl.Util.substituteEntitiesInElementContent(Util.java:175)
> at com.hp.hpl.jena.xmloutput.impl.Basic.writeLiteral(Basic.java:176)
> at com.hp.hpl.jena.xmloutput.impl.Basic.writePredicate(Basic.java:112)
> at
> com.hp.hpl.jena.xmloutput.impl.Basic.writeRDFStatements(Basic.java:85)
> at
> com.hp.hpl.jena.xmloutput.impl.Basic.writeRDFStatements(Basic.java:74)
> at com.hp.hpl.jena.xmloutput.impl.Basic.writeBody(Basic.java:48)
> at
> com.hp.hpl.jena.xmloutput.impl.BaseXMLWriter.writeXMLBody(BaseXMLWriter.java:492)
> at
> com.hp.hpl.jena.xmloutput.impl.BaseXMLWriter.write(BaseXMLWriter.java:464)
> at com.hp.hpl.jena.rdf.model.impl.ModelCom.write(ModelCom.java:319)
> at dk.rdfined.rdf.jena.Utils.WriteModelToFile2(Utils.java:51)
> at
> textanalyzerhelper.ritzau.TelegramExporter.export(TelegramExporter.java:49)
> at textanalyzerhelper.Main.main(Main.java:135)
> This problem seems to parallel with the report I found here:
> https://www.coderanch.com/t/466480/java/java/JenaOWLModel-save-throw-errors-save
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