001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.lib.wsrs;
020
021import org.apache.hadoop.classification.InterfaceAudience;
022
023import java.text.MessageFormat;
024
025@InterfaceAudience.Private
026public abstract class BooleanParam extends Param<Boolean> {
027
028  public BooleanParam(String name, Boolean defaultValue) {
029    super(name, defaultValue);
030  }
031
032  @Override
033  protected Boolean parse(String str) throws Exception {
034    if (str.equalsIgnoreCase("true")) {
035      return true;
036    } else if (str.equalsIgnoreCase("false")) {
037      return false;
038    }
039    throw new IllegalArgumentException(MessageFormat.format("Invalid value [{0}], must be a boolean", str));
040  }
041
042  @Override
043  protected String getDomain() {
044    return "a boolean";
045  }
046}