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
019 package org.apache.hadoop.lib.wsrs;
020
021 import org.apache.hadoop.classification.InterfaceAudience;
022
023 import java.text.MessageFormat;
024
025 @InterfaceAudience.Private
026 public 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 }