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Posted to dev@jena.apache.org by "Hendy Irawan (JIRA)" <ji...@apache.org> on 2014/07/02 11:56:25 UTC
[jira] [Commented] (JENA-735) Cannot write using TURTLE_FLAT:
com.hp.hpl.jena.shared.NoWriterForLangException: TURTLE_FLAT
[ https://issues.apache.org/jira/browse/JENA-735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14049792#comment-14049792 ]
Hendy Irawan commented on JENA-735:
-----------------------------------
This works:
{code}
RDFDataMgr.write(new FileOutputStream(wn31TurtleFile), model, RDFFormat.TURTLE_FLAT);
{code}
> Cannot write using TURTLE_FLAT: com.hp.hpl.jena.shared.NoWriterForLangException: TURTLE_FLAT
> --------------------------------------------------------------------------------------------
>
> Key: JENA-735
> URL: https://issues.apache.org/jira/browse/JENA-735
> Project: Apache Jena
> Issue Type: Bug
> Components: RIOT
> Affects Versions: Jena 2.11.2
> Reporter: Hendy Irawan
>
> https://jena.apache.org/documentation/io/rdf-output.html mentioned:
> bq. This page describes the RIOT (RDF I/O technology) output capabilities introduced in Jena 2.10.1. ... There are two ways to write RDF data using Apache Jena RIOT, either via the RDFDataMgr ... or using the model API:
> {code}
> model.write(output, "format") ;
> {code}
> The Model API (I'm using {{DefaultModel}}) method throws exception for {{TURTLE_FLAT}} (it works for {{TURTLE}}):
> {code}
> 05:14:19.797 [main] DEBUG o.a.j.riot.stream.JenaIOEnvironment - Failed to find configuration: location-mapping.ttl;location-mapping.rdf;location-mapping.n3;etc/location-mapping.rdf;etc/location-mapping.n3;etc/location-mapping.ttl
> 05:14:19.851 [main] INFO c.hendyirawan.wordnet.Wn30CoreToWn31 - Loading WordNet 3.0 core file '/media/ceefour/passport/Tech/Intelligent_Systems/WordNet3/wn30-core-synsets.tab'...
> 05:14:19.993 [main] INFO c.hendyirawan.wordnet.Wn30CoreToWn31 - Converted to 9920 RDF statements
> 05:14:19.993 [main] INFO c.hendyirawan.wordnet.Wn30CoreToWn31 - Saving TURTLE to '/home/ceefour/git/wordnet-extras/wn31-core-synsets.ttl'...
> Exception in thread "main" com.hp.hpl.jena.shared.NoWriterForLangException: TURTLE_FLAT
> at com.hp.hpl.jena.rdf.model.impl.RDFWriterFImpl.getWriter(RDFWriterFImpl.java:125)
> at com.hp.hpl.jena.rdf.model.impl.ModelCom.getWriter(ModelCom.java:305)
> at com.hp.hpl.jena.rdf.model.impl.ModelCom.write(ModelCom.java:354)
> at com.hendyirawan.wordnet.Wn30CoreToWn31.main(Wn30CoreToWn31.java:96)
> {code}
> Code:
> {code}
> Model model = ModelFactory.createDefaultModel();
> model.setNsPrefix("wn31", "http://wordnet-rdf.princeton.edu/wn31/");
> model.setNsPrefix("wordnet-ontology", "http://wordnet-rdf.princeton.edu/ontology#");
> model.setNsPrefix("olo", "http://purl.org/ontology/olo/core#");
> Resource synsetRes = model.createResource(model.getNsPrefixURI("wordnet-ontology") + "Synset");
> Property indexProp = model.createProperty(model.getNsPrefixURI("olo"), "index");
> File wn30coreFile = new File(args[0]);
> log.info("Loading WordNet 3.0 core file '{}'...", wn30coreFile);
> try (CSVReader reader = new CSVReader(new FileReader(wn30coreFile), '\t')) {
> int index = 1;
> while (true) {
> String[] row = reader.readNext();
> if (row == null) {
> break;
> }
> String wn30sense = row[0];
> char posLetter = wn30sense.charAt(9);
> final Integer posNumeric = Preconditions.checkNotNull(POS_NUMERIC.get(posLetter),
> "Invalid part-of-speech letter code '%s' for sense '%s'", posLetter, wn30sense);
> String wn31sense = posNumeric + wn30sense;
> final Resource wn31res = model.createResource(model.getNsPrefixURI("wn31") + wn31sense);
> model.add(wn31res, RDF.type, synsetRes);
> model.addLiteral(wn31res, indexProp, index); // hacky usage, but pragmatic :P
> index++;
> }
> }
> log.info("Converted to {} RDF statements", Iterators.size(model.listStatements()));
> File wn31TurtleFile = new File(args[1], "wn31-core-synsets.ttl");
> log.info("Saving TURTLE to '{}'...", wn31TurtleFile);
> model.write(new FileOutputStream(wn31TurtleFile), "TURTLE_FLAT");
> {code}
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