1 | /* This file is part of the project "Hilbert II" - http://www.qedeq.org |
2 | * |
3 | * Copyright 2000-2014, Michael Meyling <mime@qedeq.org>. |
4 | * |
5 | * "Hilbert II" is free software; you can redistribute |
6 | * it and/or modify it under the terms of the GNU General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
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.se.dto.module; |
17 | |
18 | import java.util.ArrayList; |
19 | import java.util.List; |
20 | |
21 | import org.qedeq.base.utility.EqualsUtility; |
22 | import org.qedeq.kernel.se.base.module.ChangedRule; |
23 | import org.qedeq.kernel.se.base.module.ChangedRuleList; |
24 | |
25 | |
26 | /** |
27 | * List of changed rules. |
28 | * |
29 | * @author Michael Meyling |
30 | */ |
31 | public class ChangedRuleListVo implements ChangedRuleList { |
32 | |
33 | /** Contains all list elements. */ |
34 | private final List list; |
35 | |
36 | /** |
37 | * Constructs an empty list of proofs. |
38 | */ |
39 | public ChangedRuleListVo() { |
40 | this.list = new ArrayList(); |
41 | |
42 | } |
43 | |
44 | /** |
45 | * Add changed rule to this list. |
46 | * |
47 | * @param rule Rule change to add. |
48 | */ |
49 | public final void add(final ChangedRule rule) { |
50 | list.add(rule); |
51 | } |
52 | |
53 | public final int size() { |
54 | return list.size(); |
55 | } |
56 | |
57 | public final ChangedRule get(final int index) { |
58 | return (ChangedRule) list.get(index); |
59 | } |
60 | |
61 | public boolean equals(final Object obj) { |
62 | if (!(obj instanceof ChangedRuleListVo)) { |
63 | return false; |
64 | } |
65 | final ChangedRuleListVo otherList = (ChangedRuleListVo) obj; |
66 | if (size() != otherList.size()) { |
67 | return false; |
68 | } |
69 | for (int i = 0; i < size(); i++) { |
70 | if (!EqualsUtility.equals(get(i), otherList.get(i))) { |
71 | return false; |
72 | } |
73 | } |
74 | return true; |
75 | } |
76 | |
77 | public int hashCode() { |
78 | int hash = 0; |
79 | for (int i = 0; i < size(); i++) { |
80 | hash = hash ^ (i + 1); |
81 | if (get(i) != null) { |
82 | hash = hash ^ get(i).hashCode(); |
83 | } |
84 | } |
85 | return hash; |
86 | } |
87 | |
88 | public String toString() { |
89 | final StringBuffer buffer = new StringBuffer("Changed rules:\n"); |
90 | for (int i = 0; i < size(); i++) { |
91 | if (i != 0) { |
92 | buffer.append("\n"); |
93 | } |
94 | buffer.append((i + 1) + ":\t"); |
95 | buffer.append(get(i) != null ? get(i).toString() : null); |
96 | } |
97 | return buffer.toString(); |
98 | } |
99 | |
100 | } |