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1   /*
2    * Copyright [2005] [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  /**
18   * 
19   */
20  
21  package org.opensaml.saml2.core.impl;
22  
23  import java.util.ArrayList;
24  import java.util.Collections;
25  import java.util.List;
26  
27  import org.opensaml.saml2.core.Attribute;
28  import org.opensaml.saml2.core.AttributeQuery;
29  import org.opensaml.xml.XMLObject;
30  import org.opensaml.xml.util.XMLObjectChildrenList;
31  
32  /**
33   * Concrete implementation of {@link org.opensaml.saml2.core.AttributeQuery}.
34   */
35  public class AttributeQueryImpl extends SubjectQueryImpl implements AttributeQuery {
36  
37      /** Attribute child elements. */
38      private final XMLObjectChildrenList<Attribute> attributes;
39  
40      /**
41       * Constructor.
42       * 
43       * @param namespaceURI the namespace the element is in
44       * @param elementLocalName the local name of the XML element this Object represents
45       * @param namespacePrefix the prefix for the given namespace
46       */
47      protected AttributeQueryImpl(String namespaceURI, String elementLocalName, String namespacePrefix) {
48          super(namespaceURI, elementLocalName, namespacePrefix);
49          attributes = new XMLObjectChildrenList<Attribute>(this);
50      }
51  
52      /** {@inheritDoc} */
53      public List<Attribute> getAttributes() {
54          return attributes;
55      }
56  
57      /** {@inheritDoc} */
58      public List<XMLObject> getOrderedChildren() {
59          ArrayList<XMLObject> children = new ArrayList<XMLObject>();
60  
61          if (super.getOrderedChildren() != null) {
62              children.addAll(super.getOrderedChildren());
63          }
64          children.addAll(attributes);
65  
66          if (children.size() == 0) {
67              return null;
68          }
69  
70          return Collections.unmodifiableList(children);
71      }
72  }