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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.Transform;
27  import org.opensaml.xml.signature.XPath;
28  import org.opensaml.xml.util.IndexedXMLObjectChildrenList;
29  import org.opensaml.xml.validation.AbstractValidatingXMLObject;
30  
31  /**
32   * Concrete implementation of {@link org.opensaml.xml.signature.Transform}
33   */
34  public class TransformImpl extends AbstractValidatingXMLObject implements Transform {
35      
36      private String algorithm;
37      
38      private final IndexedXMLObjectChildrenList indexedChildren;
39  
40      /**
41       * Constructor
42       *
43       * @param namespaceURI
44       * @param elementLocalName
45       * @param namespacePrefix
46       */
47      protected TransformImpl(String namespaceURI, String elementLocalName, String namespacePrefix) {
48          super(namespaceURI, elementLocalName, namespacePrefix);
49          indexedChildren = new IndexedXMLObjectChildrenList<XMLObject>(this);
50      }
51  
52      /** {@inheritDoc} */
53      public String getAlgorithm() {
54          return this.algorithm;
55      }
56  
57      /** {@inheritDoc} */
58      public void setAlgorithm(String newAlgorithm) {
59          this.algorithm = prepareForAssignment(this.algorithm, newAlgorithm);
60      }
61  
62      /** {@inheritDoc} */
63      public List<XMLObject> getAllChildren() {
64          return (List<XMLObject>) indexedChildren ;
65      }
66  
67      /** {@inheritDoc} */
68      public List<XMLObject> getXMLObjects(QName typeOrName) {
69          return (List<XMLObject>) indexedChildren.subList(typeOrName);
70      }
71  
72      /** {@inheritDoc} */
73      public List<XPath> getXPaths() {
74          return (List<XPath>) indexedChildren.subList(XPath.DEFAULT_ELEMENT_NAME);
75      }
76  
77      /** {@inheritDoc} */
78      public List<XMLObject> getOrderedChildren() {
79          ArrayList<XMLObject> children = new ArrayList<XMLObject>();
80          
81          children.addAll((List<XMLObject>) indexedChildren);
82          
83          if (children.size() == 0) {
84              return null;
85          }
86          
87          return Collections.unmodifiableList(children);
88      }
89  
90  }