1 package org.molwind.model;
2
3 /*
4 * This file is part of Molwind.
5 *
6 * Molwind is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * Molwind is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with Molwind. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 /**
21 * PartOf relationship type.
22 *
23 * @author <a href="mailto:oliver.karch@molwind.org">Oliver Karch</a>
24 * @version 1.0
25 */
26 public class PartOf extends BaseRelationship {
27
28 /**
29 * Creates a new partof relationship object.
30 *
31 * @param left
32 * left argument world entity
33 * @param right
34 * right argument world entity
35 */
36 public PartOf(final WorldEntity left, final WorldEntity right) {
37 super(left, right);
38 }
39
40 /**
41 * Tests whether the given entity has a part of relationship.
42 *
43 * @param part
44 * the given entity
45 * @return
46 * true if relationship type is transitive, otherwise false
47 */
48 public boolean contains(final WorldEntity part) {
49 if (part == null) {
50 return false;
51 }
52
53 WorldEntity entity = getLeft();
54 return part.equals(entity);
55 }
56
57 }