| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.any23.writer; |
| |
| import java.util.Locale; |
| |
| import org.apache.any23.extractor.ExtractionContext; |
| import org.eclipse.rdf4j.model.Resource; |
| import org.eclipse.rdf4j.model.IRI; |
| import org.eclipse.rdf4j.model.Value; |
| import org.eclipse.rdf4j.repository.RepositoryConnection; |
| import org.eclipse.rdf4j.repository.RepositoryException; |
| |
| /** |
| * An <i>RDF4J repository</i> triple writer. |
| * |
| * @see org.eclipse.rdf4j.repository.Repository |
| */ |
| public class RepositoryWriter implements TripleHandler { |
| |
| private final RepositoryConnection conn; |
| private final Resource overrideContext; |
| |
| public RepositoryWriter(RepositoryConnection conn) { |
| this(conn, null); |
| } |
| |
| public RepositoryWriter(RepositoryConnection conn, Resource overrideContext) { |
| this.conn = conn; |
| this.overrideContext = overrideContext; |
| } |
| |
| @Override |
| public void startDocument(IRI documentIRI) throws TripleHandlerException { |
| // ignore |
| } |
| |
| @Override |
| public void openContext(ExtractionContext context) throws TripleHandlerException { |
| // ignore |
| } |
| |
| @Override |
| public void receiveTriple( |
| Resource s, |
| IRI p, |
| Value o, |
| IRI g, |
| ExtractionContext context |
| ) throws TripleHandlerException { |
| try { |
| conn.add( |
| conn.getValueFactory().createStatement(s, p, o, g), |
| getContextResource(context.getDocumentIRI()) |
| ); |
| } catch (RepositoryException ex) { |
| throw new TripleHandlerException(String.format(Locale.ROOT, "Error while receiving triple: %s %s %s", s, p , o), |
| ex |
| ); |
| } |
| } |
| |
| @Override |
| public void receiveNamespace( |
| String prefix, |
| String uri, |
| ExtractionContext context |
| ) throws TripleHandlerException { |
| try { |
| conn.setNamespace(prefix, uri); |
| } catch (RepositoryException ex) { |
| throw new TripleHandlerException(String.format(Locale.ROOT, "Error while receiving namespace: %s:%s", prefix, uri), |
| ex |
| ); |
| } |
| } |
| |
| @Override |
| public void closeContext(ExtractionContext context) throws TripleHandlerException { |
| // ignore |
| } |
| |
| @Override |
| public void close()throws TripleHandlerException { |
| // ignore |
| } |
| |
| @Override |
| public void endDocument(IRI documentIRI) throws TripleHandlerException { |
| // ignore |
| } |
| |
| @Override |
| public void setContentLength(long contentLength) { |
| //ignore |
| } |
| |
| private Resource getContextResource(Resource fromExtractor) { |
| if (overrideContext != null) { |
| return overrideContext; |
| } |
| return fromExtractor; |
| } |
| } |