lucene/benchmark/src/java/org/apache/lucene/benchmark/byTask/feeds/GeonamesLineParser.java

/*
 * 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.lucene.benchmark.byTask.feeds;


/**
 * A line parser for Geonames.org data.
 * See <a href="http://download.geonames.org/export/dump/readme.txt">'geoname' table</a>.
 * Requires {@link SpatialDocMaker}.
 */
public class GeonamesLineParser extends LineDocSource.LineParser {

  /** This header will be ignored; the geonames format is fixed and doesn't have a header line. */
  public GeonamesLineParser(String[] header) {
    super(header);
  }

  @Override
  public void parseLine(DocData docData, String line) {
    String[] parts = line.split("\\t", 7);//no more than first 6 fields needed

    //    Sample data line:
    // 3578267, Morne du Vitet, Morne du Vitet, 17.88333, -62.8, ...
    // ID, Name, Alternate name (unused), Lat, Lon, ...

    docData.setID(Integer.parseInt(parts[0]));//note: overwrites ID assigned by LineDocSource
    docData.setName(parts[1]);
    String latitude = parts[4];
    String longitude = parts[5];
    docData.setBody("POINT("+longitude+" "+latitude+")");//WKT is x y order
  }
}