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 java.text.MessageFormat;
022    
023    public abstract class BooleanParam extends Param<Boolean> {
024    
025      public BooleanParam(String name, String str) {
026        value = parseParam(name, str);
027      }
028    
029      protected Boolean parse(String str) throws Exception {
030        if (str.equalsIgnoreCase("true")) {
031          return true;
032        }
033        if (str.equalsIgnoreCase("false")) {
034          return false;
035        }
036        throw new IllegalArgumentException(MessageFormat.format("Invalid value [{0}], must be a boolean", str));
037      }
038    
039      @Override
040      protected String getDomain() {
041        return "a boolean";
042      }
043    }