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    import org.apache.hadoop.fs.XAttrCodec;
021    
022    public class XAttrEncodingParam extends EnumParam<XAttrCodec> {
023      /** Parameter name. */
024      public static final String NAME = "encoding";
025      /** Default parameter value. */
026      public static final String DEFAULT = "";
027      
028      private static final Domain<XAttrCodec> DOMAIN = 
029          new Domain<XAttrCodec>(NAME, XAttrCodec.class);
030      
031      public XAttrEncodingParam(final XAttrCodec encoding) {
032        super(DOMAIN, encoding);
033      }
034      
035      /**
036       * Constructor.
037       * @param str a string representation of the parameter value.
038       */
039      public XAttrEncodingParam(final String str) {
040        super(DOMAIN, str != null && !str.isEmpty() ? DOMAIN.parse(str) : null);
041      }
042    
043      @Override
044      public String getName() {
045        return NAME;
046      }
047      
048      @Override
049      public String getValueString() {
050        return value.toString();
051      }
052      
053      public XAttrCodec getEncoding() {
054        return getValue();
055      }
056    }