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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.xml;
19  
20  import org.w3c.dom.Element;
21  
22  /**
23   * Strategy class for adding one {@link Element} into another {@link Element}.
24   * 
25   * @author sanjin
26   */
27  public interface AddStrategy {
28  
29      /**
30       * Add specified child {@link Element} into specified parent {@link Element}
31       * .
32       * 
33       * @param parent the parent {@link Element}.
34       * @param child the child {@link Element}.
35       * @throws NullPointerException if parent or child {@link Element} is
36       *         <code>null</code>.
37       */
38      void add(Element parent, Element child);
39  }