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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.hdfs.web.resources;

import java.io.IOException;

import org.apache.hadoop.fs.XAttrCodec;

public class XAttrValueParam extends StringParam {
  /** Parameter name. **/
  public static final String NAME = "xattr.value";
  /** Default parameter value. **/
  public static final String DEFAULT = "";
  
  private static Domain DOMAIN = new Domain(NAME, null);
  
  public XAttrValueParam(final String str) {
    super(DOMAIN, str == null || str.equals(DEFAULT) ? null : str);
  }

  @Override
  public String getName() {
    return NAME;
  }
  
  public byte[] getXAttrValue() throws IOException {
    final String v = getValue();
    return XAttrCodec.decodeValue(v);
  }
}