001package ca.uhn.fhir.util.rdf;
002
003/*
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2021 Smile CDR, Inc.
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import org.apache.jena.rdf.model.Model;
024import org.apache.jena.rdf.model.ModelFactory;
025import org.apache.jena.riot.Lang;
026import org.apache.jena.riot.RDFDataMgr;
027
028import java.io.*;
029
030public class RDFUtil {
031
032        public static Model initializeRDFModel() {
033                // Create the model
034                return ModelFactory.createDefaultModel();
035        }
036
037        public static Model readRDFToModel(final Reader reader, final Lang lang) {
038                Model rdfModel = initializeRDFModel();
039                RDFDataMgr.read(rdfModel, reader, null, lang);
040                return rdfModel;
041        }
042
043        public static void writeRDFModel(Writer writer, Model rdfModel, Lang lang) {
044                // This writes to the provided Writer.
045                // Jena has deprecated methods that use a generic Writer
046                // writer could be explicitly casted to StringWriter in order to hit a
047                // non-deprecated overload
048                RDFDataMgr.write(writer, rdfModel, lang);
049        }
050}