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
020import java.io.IOException;
021
022import org.apache.hadoop.fs.XAttrCodec;
023
024public class XAttrValueParam extends StringParam {
025  /** Parameter name. **/
026  public static final String NAME = "xattr.value";
027  /** Default parameter value. **/
028  public static final String DEFAULT = "";
029
030  private static Domain DOMAIN = new Domain(NAME, null);
031
032  public XAttrValueParam(final String str) {
033    super(DOMAIN, str == null || str.equals(DEFAULT) ? null : str);
034  }
035
036  @Override
037  public String getName() {
038    return NAME;
039  }
040
041  public byte[] getXAttrValue() throws IOException {
042    final String v = getValue();
043    return XAttrCodec.decodeValue(v);
044  }
045}