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1   /*******************************************************************************
2   * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
3   *
4   * All rights reserved. This program and the accompanying materials
5   * are made available under the terms of the Eclipse Public License v1.0
6   * which accompanies this distribution, and is available at
7   * http://www.eclipse.org/legal/epl-v10.html
8   *
9   * Alternatively, the contents of this file may be used under the terms of
10  * either the GNU Lesser General Public License Version 2.1 or later (the
11  * "LGPL"), in which case the provisions of the LGPL are applicable instead
12  * of those above. If you wish to allow use of your version of this file only
13  * under the terms of the LGPL, and not to allow others to use your version of
14  * this file under the terms of the EPL, indicate your decision by deleting
15  * the provisions above and replace them with the notice and other provisions
16  * required by the LGPL. If you do not delete the provisions above, a recipient
17  * may use your version of this file under the terms of the EPL or the LGPL.
18  *******************************************************************************/
19  package org.sat4j.csp;
20  
21  import org.sat4j.specs.ContradictionException;
22  import org.sat4j.specs.ISolver;
23  
24  public class Constant implements Evaluable {
25  
26      private final int value;
27  
28      private final Domain domain;
29  
30      public Constant(int value) {
31          this.value = value;
32          domain = new SingletonDomain(value);
33      }
34  
35      public Domain domain() {
36          return domain;
37      }
38  
39      public int translate(int key) {
40          throw new UnsupportedOperationException();
41      }
42  
43      public void toClause(ISolver solver) throws ContradictionException {
44          throw new UnsupportedOperationException();
45      }
46  
47      /*
48       * (non-Javadoc)
49       * 
50       * @see java.lang.Object#toString()
51       */
52      @Override
53      public String toString() {
54          return String.valueOf(value);
55      }
56  
57  }