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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.encryption.impl;
18  
19  import java.util.ArrayList;
20  import java.util.Collections;
21  import java.util.List;
22  
23  import org.opensaml.xml.XMLObject;
24  import org.opensaml.xml.encryption.CipherReference;
25  import org.opensaml.xml.encryption.Transforms;
26  import org.opensaml.xml.validation.AbstractValidatingXMLObject;
27  
28  /**
29   * Concrete implementation of {@link org.opensaml.xml.encryption.CipherReference}.
30   */
31  public class CipherReferenceImpl extends AbstractValidatingXMLObject implements CipherReference {
32  
33      /** URI attribute value. */
34      private String uri;
35  
36      /** Transforms child element value. */
37      private Transforms transforms;
38  
39      /**
40       * Constructor.
41       * 
42       * @param namespaceURI namespace URI
43       * @param elementLocalName local name
44       * @param namespacePrefix namespace prefix
45       */
46      protected CipherReferenceImpl(String namespaceURI, String elementLocalName, String namespacePrefix) {
47          super(namespaceURI, elementLocalName, namespacePrefix);
48      }
49  
50      /** {@inheritDoc} */
51      public String getURI() {
52          return this.uri;
53      }
54  
55      /** {@inheritDoc} */
56      public void setURI(String newURI) {
57          this.uri = prepareForAssignment(this.uri, newURI);
58      }
59  
60      /** {@inheritDoc} */
61      public Transforms getTransforms() {
62          return this.transforms;
63      }
64  
65      /** {@inheritDoc} */
66      public void setTransforms(Transforms newTransforms) {
67          this.transforms = prepareForAssignment(this.transforms, newTransforms);
68      }
69  
70      /** {@inheritDoc} */
71      public List<XMLObject> getOrderedChildren() {
72          ArrayList<XMLObject> children = new ArrayList<XMLObject>();
73  
74          if (transforms != null) {
75              children.add(transforms);
76          }
77  
78          if (children.size() == 0) {
79              return null;
80          }
81  
82          return Collections.unmodifiableList(children);
83      }
84  
85  }