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/**
021 * The snapshot name parameter for createSnapshot and deleteSnapshot operation.
022 * Also used to indicate the new snapshot name for renameSnapshot operation.
023 */
024public class SnapshotNameParam extends StringParam {
025  /** Parameter name. */
026  public static final String NAME = "snapshotname";
027
028  /** Default parameter value. */
029  public static final String DEFAULT = "";
030
031  private static final Domain DOMAIN = new Domain(NAME, null);
032
033  public SnapshotNameParam(final String str) {
034    super(DOMAIN, str != null && !str.equals(DEFAULT) ? str : null);
035  }
036
037  @Override
038  public String getName() {
039    return NAME;
040  }
041}