1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 /*
   6  * Copyright  1999-2004 The Apache Software Foundation.
   7  *
   8  *  Licensed under the Apache License, Version 2.0 (the "License");
   9  *  you may not use this file except in compliance with the License.
  10  *  You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  *  Unless required by applicable law or agreed to in writing, software
  15  *  distributed under the License is distributed on an "AS IS" BASIS,
  16  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  *  See the License for the specific language governing permissions and
  18  *  limitations under the License.
  19  *
  20  */
  21 package com.sun.org.apache.xml.internal.security.algorithms;
  22 
  23 
  24 
  25 import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException;
  26 import com.sun.org.apache.xml.internal.security.utils.Constants;
  27 import com.sun.org.apache.xml.internal.security.utils.SignatureElementProxy;
  28 import org.w3c.dom.Document;
  29 import org.w3c.dom.Element;
  30 
  31 
  32 /**
  33  * The Algorithm class which stores the Algorithm URI as a string.
  34  *
  35  */
  36 public abstract class Algorithm extends SignatureElementProxy {
  37 
  38    /**
  39     *
  40     * @param doc
  41     * @param algorithmURI is the URI of the algorithm as String
  42     */
  43    public Algorithm(Document doc, String algorithmURI) {
  44 
  45       super(doc);
  46 
  47       this.setAlgorithmURI(algorithmURI);
  48    }
  49 
  50    /**
  51     * Constructor Algorithm
  52     *
  53     * @param element
  54     * @param BaseURI
  55     * @throws XMLSecurityException
  56     */
  57    public Algorithm(Element element, String BaseURI)
  58            throws XMLSecurityException {
  59       super(element, BaseURI);
  60    }
  61 
  62    /**
  63     * Method getAlgorithmURI
  64     *
  65     * @return The URI of the alogrithm
  66     */
  67    public String getAlgorithmURI() {
  68       return this._constructionElement.getAttributeNS(null, Constants._ATT_ALGORITHM);
  69    }
  70 
  71    /**
  72     * Sets the algorithm's URI as used in the signature.
  73     *
  74     * @param algorithmURI is the URI of the algorithm as String
  75     */
  76    protected void setAlgorithmURI(String algorithmURI) {
  77 
  78       if ( (algorithmURI != null)) {
  79          this._constructionElement.setAttributeNS(null, Constants._ATT_ALGORITHM,
  80                                                 algorithmURI);
  81       }
  82    }
  83 }