| /* |
| * 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.extractor.html; |
| |
| import org.apache.any23.extractor.ExtractionResult; |
| import org.apache.any23.extractor.ExtractorDescription; |
| import org.apache.any23.extractor.TagSoupExtractionResult; |
| import org.apache.any23.vocab.VCard; |
| import org.eclipse.rdf4j.model.BNode; |
| import org.eclipse.rdf4j.model.vocabulary.RDF; |
| import org.w3c.dom.Node; |
| |
| /** |
| * Extractor for the <a href="http://microformats.org/wiki/geo">Geo</a> microformat. |
| * |
| * @author Gabriele Renzi |
| */ |
| public class GeoExtractor extends EntityBasedMicroformatExtractor { |
| |
| private static final VCard vVCARD = VCard.getInstance(); |
| |
| @Override |
| public ExtractorDescription getDescription() { |
| return GeoExtractorFactory.getDescriptionInstance(); |
| } |
| |
| protected String getBaseClassName() { |
| return "geo"; |
| } |
| |
| @Override |
| protected void resetExtractor() { |
| // Empty. |
| } |
| |
| protected boolean extractEntity(Node node, ExtractionResult out) { |
| if (null == node) |
| return false; |
| // try lat & lon |
| final HTMLDocument document = new HTMLDocument(node); |
| HTMLDocument.TextField latNode = document.getSingularTextField("latitude"); |
| HTMLDocument.TextField lonNode = document.getSingularTextField("longitude"); |
| String lat = latNode.value(); |
| String lon = lonNode.value(); |
| if ("".equals(lat) || "".equals(lon)) { |
| String[] both = document.getSingularUrlField("geo").value().split(";"); |
| if (both.length != 2) |
| return false; |
| lat = both[0]; |
| lon = both[1]; |
| } |
| BNode geo = getBlankNodeFor(node); |
| out.writeTriple(geo, RDF.TYPE, vVCARD.Location); |
| conditionallyAddStringProperty(latNode.source(), geo, vVCARD.latitude, lat); |
| conditionallyAddStringProperty(lonNode.source(), geo, vVCARD.longitude, lon); |
| |
| final TagSoupExtractionResult tser = (TagSoupExtractionResult) getCurrentExtractionResult(); |
| tser.addResourceRoot(document.getPathToLocalRoot(), geo, this.getClass()); |
| |
| return true; |
| } |
| |
| } |