001/*
002 * Licensed under the Apache License, Version 2.0 (the "License");
003 * you may not use this file except in compliance with the License.
004 * You may obtain a copy of the License at
005 *
006 *     http://www.apache.org/licenses/LICENSE-2.0
007 *
008 * Unless required by applicable law or agreed to in writing, software
009 * distributed under the License is distributed on an "AS IS" BASIS,
010 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
011 * See the License for the specific language governing permissions and
012 * limitations under the License.
013 */
014package org.gbif.common.parsers;
015
016import org.gbif.common.parsers.core.FileBasedDictionaryParser;
017
018/**
019 * Singleton implementation of the dictionary that uses the file /dictionaries/parse/boolean.txt.
020 */
021public class BooleanParser extends FileBasedDictionaryParser<Boolean> {
022
023  private static BooleanParser singletonObject = null;
024
025  private BooleanParser() {
026    super(false);
027    // use dict file last
028    init(BooleanParser.class.getResourceAsStream("/dictionaries/parse/boolean.tsv"));
029  }
030
031  public static BooleanParser getInstance() {
032    synchronized (BooleanParser.class) {
033      if (singletonObject == null) {
034        singletonObject = new BooleanParser();
035      }
036    }
037    return singletonObject;
038  }
039
040  @Override
041  protected Boolean fromDictFile(String value) {
042    return Boolean.parseBoolean(value);
043  }
044}