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1   /*
2    * Copyright [2006] [University Corporation for Advanced Internet Development, Inc.]
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 org.opensaml.xml.signature.impl;
18  
19  import java.util.ArrayList;
20  import java.util.Collections;
21  import java.util.List;
22  
23  import javax.xml.namespace.QName;
24  
25  import org.opensaml.xml.XMLObject;
26  import org.opensaml.xml.signature.DigestMethod;
27  import org.opensaml.xml.util.IndexedXMLObjectChildrenList;
28  import org.opensaml.xml.validation.AbstractValidatingXMLObject;
29  
30  /**
31   * Concrete implementation of {@link org.opensaml.xml.signature.DigestMethod}.
32   */
33  public class DigestMethodImpl extends AbstractValidatingXMLObject implements DigestMethod {
34      
35      /** Algorithm attribute value. */
36      private String algorithm;
37      
38      /** "any" children. */
39      private final IndexedXMLObjectChildrenList<XMLObject> unknownChildren;
40      
41      /**
42       * Constructor.
43       *
44       * @param namespaceURI
45       * @param elementLocalName
46       * @param namespacePrefix
47       */
48      protected DigestMethodImpl(String namespaceURI, String elementLocalName, String namespacePrefix) {
49          super(namespaceURI, elementLocalName, namespacePrefix);
50          
51          unknownChildren = new IndexedXMLObjectChildrenList<XMLObject>(this);
52      }
53  
54      /** {@inheritDoc} */
55      public String getAlgorithm() {
56          return this.algorithm;
57      }
58  
59      /** {@inheritDoc} */
60      public void setAlgorithm(String newAlgorithm) {
61          this.algorithm = prepareForAssignment(this.algorithm, newAlgorithm);
62      }
63  
64      /** {@inheritDoc} */
65      public List<XMLObject> getUnknownXMLObjects() {
66          return this.unknownChildren;
67      }
68      /** {@inheritDoc} */
69      public List<XMLObject> getUnknownXMLObjects(QName typeOrName) {
70          return (List<XMLObject>) unknownChildren.subList(typeOrName);
71      }
72  
73      /** {@inheritDoc} */
74      public List<XMLObject> getOrderedChildren() {
75          ArrayList<XMLObject> children = new ArrayList<XMLObject>();
76          
77          children.addAll(unknownChildren);
78          
79          if (children.size() == 0) {
80              return null;
81          }
82          
83          return Collections.unmodifiableList(children);
84      }
85  
86  }