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1   /* This file is part of COPAL (COntext Provisioning for All).
2    *
3    * COPAL is a part of SM4All (Smart hoMes for All) project.
4    *
5    * COPAL is free software: you can redistribute it and/or modify
6    * it under the terms of the GNU Lesser General Public License as published by
7    * the Free Software Foundation, either version 3 of the License, or
8    * (at your option) any later version.
9    *
10   * COPAL is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   * GNU Lesser General Public License for more details.
14   *
15   * You should have received a copy of the GNU Lesser General Public License
16   * along with COPAL. If not, see <http://www.gnu.org/licenses/>.
17   */
18  package at.ac.tuwien.infosys.sm4all.copal.api.event.xml;
19  
20  import org.w3c.dom.Document;
21  import org.w3c.dom.Element;
22  
23  /**
24   * The abstract class for virtual COPAL elements i.e. elements which do not have
25   * actual {@link Element} in a {@link Document} generated by the
26   * {@link XMLContextEvent#getDocument()} method, but can deduce its value from
27   * other {@link Element}s in the {@link Document}.
28   * 
29   * @param <T> the type of element's value.
30   * @author sanjin
31   */
32  public abstract class VirtualElement<T> extends XMLElement<T> {
33  
34      /**
35       * @param type the XML type of this COPAL element returned by the xPath.
36       */
37      protected VirtualElement(final Class<?> type) {
38          super(type);
39      }
40  }