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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
EverythingExists.java | - | 100% | 100% | 100% |
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1 | /* $Id: FormulaBasicErrors.java,v 1.3 2006/11/07 20:23:03 m31 Exp $ | |
2 | * | |
3 | * This file is part of the project "Hilbert II" - http://www.qedeq.org | |
4 | * | |
5 | * Copyright 2000-2006, Michael Meyling <mime@qedeq.org>. | |
6 | * | |
7 | * "Hilbert II" is free software; you can redistribute | |
8 | * it and/or modify it under the terms of the GNU General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2 of the License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | package org.qedeq.kernel.bo.logic; | |
19 | ||
20 | /** | |
21 | * This implementation gives always the answer <code>true</code> to the question | |
22 | * <em>exists this predicate?</em>. | |
23 | * | |
24 | * @version $Revision: 1.4 $ | |
25 | * @author Michael Meyling | |
26 | */ | |
27 | public final class EverythingExists implements ExistenceChecker { | |
28 | ||
29 | /** One and only instance. */ | |
30 | private static final ExistenceChecker ALWAYS = new EverythingExists(); | |
31 | ||
32 | /** | |
33 | * Hidden constructor. | |
34 | */ | |
35 | 1 | private EverythingExists() { |
36 | // nothing to do | |
37 | } | |
38 | ||
39 | 126 | public boolean predicateExists(final String name, final int arguments) { |
40 | 126 | return true; |
41 | } | |
42 | ||
43 | 7 | public boolean functionExists(final String name, final int arguments) { |
44 | 7 | return true; |
45 | } | |
46 | ||
47 | 10 | public boolean classOperatorExists() { |
48 | 10 | return true; |
49 | } | |
50 | ||
51 | 74 | public boolean equalityOperatorExists() { |
52 | 74 | return true; |
53 | } | |
54 | ||
55 | 72 | public String getEqualityOperator() { |
56 | 72 | return "equal"; |
57 | } | |
58 | ||
59 | ||
60 | /** | |
61 | * Get one instance of this class. | |
62 | * | |
63 | * @return Class instance. | |
64 | */ | |
65 | 72 | public static final ExistenceChecker getInstance() { |
66 | 72 | return ALWAYS; |
67 | } | |
68 | ||
69 | } |
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