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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *  http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.any23.extractor.html.microformats2;
    19
    20  import org.apache.any23.extractor.ExtractionException;
    21  import org.apache.any23.extractor.ExtractionResult;
    22  import org.apache.any23.extractor.ExtractorDescription;
    23  import org.apache.any23.extractor.TagSoupExtractionResult;
    24  import org.apache.any23.extractor.html.microformats2.annotations.Includes;
    25  import org.apache.any23.vocab.VCard;
    26  import org.eclipse.rdf4j.model.BNode;
    27  import org.eclipse.rdf4j.model.Resource;
    28  import org.eclipse.rdf4j.model.vocabulary.RDF;
    29  import org.w3c.dom.Node;
    30  import org.apache.any23.extractor.html.EntityBasedMicroformatExtractor;
    31  import org.apache.any23.extractor.html.HTMLDocument;
    32
    33  /**
    34   * Extractor for the <a href="http://microformats.org/wiki/h-adr">h-adr</a> microformat.
    35   *
    36   * @author Nisala Nirmana
    37   */
    38  @Includes(extractors = HGeoExtractor.class)
    39  public class HAdrExtractor extends EntityBasedMicroformatExtractor {
    40
    41      private static final VCard vVCARD = VCard.getInstance();
    42
    43      private static final String[] addressFields = { "street-address", "extended-address", "locality", "region",
    44              "postal-code", "country-name", "geo" };
    45
    46      private static final String[] geoFields = { "latitude", "longitude", "altitude" };
    47
    48      protected String getBaseClassName() {
    49          return Microformats2Prefixes.CLASS_PREFIX + "adr";
    50      }
    51
    52      @Override
    53      protected void resetExtractor() {
    54          // Empty.
    55      }
    56
    57      protected boolean extractEntity(Node node, ExtractionResult out) throws ExtractionException {
    58          if (null == node)
    59              return false;
    60          final HTMLDocumentl/HTMLDocument.html#HTMLDocument">HTMLDocument document = new HTMLDocument(node);
    61          BNode adr = getBlankNodeFor(node);
    62          out.writeTriple(adr, RDF.TYPE, vVCARD.Address);
    63          final String extractorName = getDescription().getExtractorName();
    64          for (String field : addressFields) {
    65              HTMLDocument.TextField[] values = document
    66                      .getPluralTextField(Microformats2Prefixes.PROPERTY_PREFIX + field);
    67              for (HTMLDocument.TextField val : values) {
    68                  if (!field.equals("geo")) {
    69                      conditionallyAddStringProperty(val.source(), adr, vVCARD.getProperty(field), val.value());
    70                  } else {
    71                      String[] composed = val.value().split(";");
    72                      for (int counter = 0; counter < composed.length; counter++) {
    73                          conditionallyAddStringProperty(val.source(), adr, vVCARD.getProperty(geoFields[counter]),
    74                                  composed[counter]);
    75
    76                      }
    77                  }
    78              }
    79          }
    80          addGeoAsUrlResource(adr, document);
    81          final TagSoupExtractionResult../org/apache/any23/extractor/TagSoupExtractionResult.html#TagSoupExtractionResult">TagSoupExtractionResult tser = (TagSoupExtractionResult) getCurrentExtractionResult();
    82          tser.addResourceRoot(document.getPathToLocalRoot(), adr, this.getClass());
    83          return true;
    84      }
    85
    86      private void addGeoAsUrlResource(Resource card, HTMLDocument document) throws ExtractionException {
    87          HTMLDocument.TextField[] links = document.getPluralUrlField(Microformats2Prefixes.URL_PROPERTY_PREFIX + "geo");
    88          for (HTMLDocument.TextField link : links) {
    89              conditionallyAddResourceProperty(card, vVCARD.geo, getHTMLDocument().resolveIRI(link.value()));
    90          }
    91      }
    92
    93      @Override
    94      public ExtractorDescription getDescription() {
    95          return HAdrExtractorFactory.getDescriptionInstance();
    96      }
    97
    98  }