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    package 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     */
024    public 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    }