org.apache.abdera.ext.media.MediaHash Maven / Gradle / Ivy

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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  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.  For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.abdera.ext.media;

import javax.xml.namespace.QName;

import org.apache.abdera.factory.Factory;
import org.apache.abdera.model.Element;
import org.apache.abdera.model.ElementWrapper;

public class MediaHash extends ElementWrapper {

  public MediaHash(Element internal) {
    super(internal);
  }

  public MediaHash(Factory factory) {
    super(factory, MediaConstants.HASH);
  }
  
  public MediaConstants.Algo getAlgorithm() {
    String algo = getAttributeValue("algo");
    if (algo == null) return null;
    if (algo.equalsIgnoreCase("sha-1")) return MediaConstants.Algo.SHA1;
    if (algo.equalsIgnoreCase("md5")) return MediaConstants.Algo.MD5;
    return null;
  }
  
  public void setAlgorithm(MediaConstants.Algo algorithm) {
    switch (algorithm) {
      case SHA1: setAttributeValue("algo", "sha-1"); break;
      case MD5: setAttributeValue("algo", "md5"); break;
      default: removeAttribute(new QName("algo"));
    }
  }
  
  // TODO: Helper methods for calculating the hash
}