01 /* This file is part of the project "Hilbert II" - http://www.qedeq.org
02 *
03 * Copyright 2000-2013, Michael Meyling <mime@qedeq.org>.
04 *
05 * "Hilbert II" is free software; you can redistribute
06 * it and/or modify it under the terms of the GNU General Public
07 * License as published by the Free Software Foundation; either
08 * version 2 of the License, or (at your option) any later version.
09 *
10 * This program 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 General Public License for more details.
14 */
15
16 package org.qedeq.kernel.bo.logic.common;
17
18 import org.qedeq.kernel.se.common.RuleKey;
19
20
21 /**
22 * Check if a rule is already defined.
23 *
24 * @author Michael Meyling
25 */
26 public interface RuleExistenceChecker {
27
28 /**
29 * Check if a rule is already defined.
30 *
31 * @param ruleKey Rule defining data.
32 * @return Rule is defined.
33 */
34 public boolean ruleExists(RuleKey ruleKey);
35
36 }
|