/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* 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 net.ontopia.topicmaps.utils.rdf;
import com.hp.hpl.jena.rdfxml.xmlinput.ARP;
import com.hp.hpl.jena.rdfxml.xmlinput.StatementHandler;
import java.net.URL;
import java.net.URLConnection;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import net.ontopia.utils.OntopiaRuntimeException;
/**
* INTERNAL: Various utilities for working with RDF.
*/
public class RDFUtils {
/**
* Parses the RDF/XML at the given URL into the given StatementHandler.
*/
public static void parseRDFXML(String url, StatementHandler handler)
throws IOException {
ARP parser = new ARP();
parser.getHandlers().setStatementHandler(handler);
URLConnection conn = new URL(url).openConnection();
String encoding = conn.getContentEncoding();
InputStream in = null;
try {
in = conn.getInputStream();
if (encoding == null)
parser.load(in, url);
else
parser.load(new InputStreamReader(in, encoding), url);
in.close();
} catch (org.xml.sax.SAXException e) {
throw new OntopiaRuntimeException(e);
} finally {
if (in != null)
in.close();
}
}
}