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Java > Open Source Codes > com > sun > org > apache > xml > internal > security > algorithms > Algorithm


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17 package com.sun.org.apache.xml.internal.security.algorithms;
18
19
20
21 import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException;
22 import com.sun.org.apache.xml.internal.security.utils.Constants;
23 import com.sun.org.apache.xml.internal.security.utils.ElementProxy;
24 import org.w3c.dom.Document JavaDoc;
25 import org.w3c.dom.Element JavaDoc;
26
27
28 /**
29  * The Algorithm class which stores the Algorithm URI as a string.
30  *
31  */
32 public abstract class Algorithm extends ElementProxy {
33
34    /** {@link java.util.logging} logging facility */
35     static java.util.logging.Logger JavaDoc log =
36         java.util.logging.Logger.getLogger(Algorithm.class.getName());
37
38    /**
39     *
40     * @param doc
41     * @param algorithmURI is the URI of the algorithm as String
42     */
43    public Algorithm(Document JavaDoc doc, String JavaDoc 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 JavaDoc element, String JavaDoc 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 JavaDoc 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 JavaDoc algorithmURI) {
77
78       if ((this._state == MODE_CREATE) && (algorithmURI != null)) {
79          this._constructionElement.setAttributeNS(null, Constants._ATT_ALGORITHM,
80                                                 algorithmURI);
81       }
82    }
83 }
84
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