/*
* Copyright 2012 Research Studios Austria Forschungsges.m.b.H.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package won.bot.framework.component.needproducer.impl;
import org.apache.jena.query.Dataset;
import org.apache.jena.query.DatasetFactory;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.riot.RDFDataMgr;
import org.apache.jena.riot.RDFFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import won.bot.framework.component.needproducer.FileBasedNeedProducer;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
/**
* User: fkleedorfer
* Date: 17.12.13
*/
public class TrigFileNeedProducer implements FileBasedNeedProducer
{
private final Logger logger = LoggerFactory.getLogger(getClass());
@Override
public synchronized Model readNeedFromFile(final File file) throws IOException
{
logger.debug("processing as turtle file: {} ", file);
try (FileInputStream fis = new FileInputStream(file)) {
Dataset dataset = DatasetFactory.createGeneral();
RDFDataMgr.read(dataset, fis, RDFFormat.TRIG.getLang());
// TODO this needs to be fixed according to the need trig format
// definition, i.e. the need/connection/event/etc. triples are in core
// and transient named graphs, and in default graph there can only be
// the graphs signatures. The Dataset should be returned instead of
// Model
return dataset.getDefaultModel();
} catch (Exception e) {
logger.debug("could not parse trig from file {} ", file, e);
throw e;
}
}
}