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1   /*
2    * Licensed to The Apereo Foundation under one or more contributor license
3    * agreements. See the NOTICE file distributed with this work for additional
4    * information regarding copyright ownership.
5    *
6    *
7    * The Apereo Foundation licenses this file to you under the Educational
8    * Community License, Version 2.0 (the "License"); you may not use this file
9    * except in compliance with the License. You may obtain a copy of the License
10   * at:
11   *
12   *   http://opensource.org/licenses/ecl2.txt
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
16   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
17   * License for the specific language governing permissions and limitations under
18   * the License.
19   *
20   */
21  
22  package org.opencastproject.metadata.mpeg7;
23  
24  import org.w3c.dom.Document;
25  import org.w3c.dom.Element;
26  import org.w3c.dom.Node;
27  
28  /**
29   * Default implementation of the media time.
30   */
31  public class SpatioTemporalLocatorImpl implements SpatioTemporalLocator {
32  
33    /** The media time */
34    protected MediaTime mediaTime = null;
35  
36    /**
37     * Creates a new spatio temporal locator.
38     *
39     * @param time
40     *          the time
41     */
42    public SpatioTemporalLocatorImpl(MediaTime time) {
43      this.mediaTime = time;
44    }
45  
46    /**
47     * {@inheritDoc}
48     *
49     * @see org.opencastproject.metadata.mpeg7.SpatioTemporalLocator#setMediaTime(org.opencastproject.metadata.mpeg7.MediaTime)
50     */
51    @Override
52    public void setMediaTime(MediaTime time) {
53      if (time == null)
54        throw new IllegalArgumentException("The media time must not be null");
55      this.mediaTime = time;
56    }
57  
58    /**
59     * {@inheritDoc}
60     *
61     * @see org.opencastproject.metadata.mpeg7.SpatioTemporalLocator#getMediaTime()
62     */
63    @Override
64    public MediaTime getMediaTime() {
65      return mediaTime;
66    }
67  
68    /**
69     * {@inheritDoc}
70     *
71     * @see org.opencastproject.mediapackage.XmlElement#toXml(org.w3c.dom.Document)
72     */
73    @Override
74    public Node toXml(Document document) {
75      Element l = document.createElement("SpatioTemporalLocator");
76      l.appendChild(mediaTime.toXml(document));
77      return l;
78    }
79  
80  }