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 */
018package org.apache.hadoop.hdfs.web.resources;
019
020/** policy parameter. */
021public class StoragePolicyParam extends StringParam {
022  /** Parameter name. */
023  public static final String NAME = "storagepolicy";
024  /** Default parameter value. */
025  public static final String DEFAULT = "";
026
027  private static final Domain DOMAIN = new Domain(NAME, null);
028
029  /**
030   * Constructor.
031   *
032   * @param str
033   *          a string representation of the parameter value.
034   */
035  public StoragePolicyParam(final String str) {
036    super(DOMAIN, str == null || str.equals(DEFAULT) ? null : str);
037  }
038
039  @Override
040  public String getName() {
041    return NAME;
042  }
043}