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.util.StringUtils; 022 023 import java.util.Arrays; 024 025 public abstract class EnumParam<E extends Enum<E>> extends Param<E> { 026 Class<E> klass; 027 028 public EnumParam(String label, String str, Class<E> e) { 029 klass = e; 030 value = parseParam(label, str); 031 } 032 033 protected E parse(String str) throws Exception { 034 return Enum.valueOf(klass, str.toUpperCase()); 035 } 036 037 @Override 038 protected String getDomain() { 039 return StringUtils.join(",", Arrays.asList(klass.getEnumConstants())); 040 } 041 042 }