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• source code
• RDFDeserializingLifter.java

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it.uniroma2.art.semanticturkey.extension.impl.rdflifter.rdfdeserializer.RDFDeserializingLifter Maven / Gradle / Ivy

package it.uniroma2.art.semanticturkey.extension.impl.rdflifter.rdfdeserializer;

import java.io.IOException;
import java.io.InputStream;

import org.eclipse.rdf4j.model.impl.SimpleValueFactory;
import org.eclipse.rdf4j.repository.util.RDFLoader;
import org.eclipse.rdf4j.rio.ParserConfig;
import org.eclipse.rdf4j.rio.RDFFormat;
import org.eclipse.rdf4j.rio.RDFHandler;

import it.uniroma2.art.semanticturkey.extension.extpts.rdflifter.LifterContext;
import it.uniroma2.art.semanticturkey.extension.extpts.rdflifter.LiftingException;
import it.uniroma2.art.semanticturkey.extension.extpts.rdflifter.RDFLifter;
import it.uniroma2.art.semanticturkey.extension.extpts.reformattingexporter.ClosableFormattedResource;
import it.uniroma2.art.semanticturkey.utilities.RDF4JUtilities;

/**
 * An {@link RDFLifter} that deserializes RDF data according to the provided serialization format
 * 
 * @author Manuel Fiorelli
 */
public class RDFDeserializingLifter implements RDFLifter {

	@Override
	public void lift(ClosableFormattedResource sourceFormattedResource, String format,
			RDFHandler targetRDFHandler, LifterContext lifterContext) throws LiftingException, IOException {
		if (format == null) {
			throw new LiftingException("RDF format was not specified");
		}

		RDFFormat rdfFormat = RDF4JUtilities.getRDFFormat(format);

		RDFLoader rdfLoader = new RDFLoader(new ParserConfig(), SimpleValueFactory.getInstance());
		try (InputStream is = sourceFormattedResource.getInputStream()) {
			rdfLoader.load(is, "", rdfFormat, targetRDFHandler);
		}
	}

}