| 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.common; |
| 17 | |
| 18 | import org.qedeq.base.utility.EqualsUtility; |
| 19 | |
| 20 | /** |
| 21 | * Rule key, describing a certain version of a rule. |
| 22 | * |
| 23 | * @author Michael Meyling |
| 24 | */ |
| 25 | public final class RuleKey { |
| 26 | |
| 27 | /** Rule name. */ |
| 28 | private String name; |
| 29 | |
| 30 | /** Rule version. */ |
| 31 | private String version; |
| 32 | |
| 33 | /** |
| 34 | * Constructor. |
| 35 | * |
| 36 | * @param name Rule name. |
| 37 | * @param version Rule argument number. |
| 38 | */ |
| 39 | public RuleKey(final String name, final String version) { |
| 40 | this.name = name; |
| 41 | this.version = version; |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Get rule name. |
| 46 | * |
| 47 | * @return Rule name. |
| 48 | */ |
| 49 | public String getName() { |
| 50 | return name; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Get rule version. |
| 55 | * |
| 56 | * @return Rule version. |
| 57 | */ |
| 58 | public String getVersion() { |
| 59 | return version; |
| 60 | } |
| 61 | |
| 62 | public int hashCode() { |
| 63 | return (getName() != null ? getName().hashCode() : 0) |
| 64 | ^ (getVersion() != null ? getVersion().hashCode() : 0); |
| 65 | } |
| 66 | |
| 67 | public boolean equals(final Object obj) { |
| 68 | if (!(obj instanceof RuleKey)) { |
| 69 | return false; |
| 70 | } |
| 71 | final RuleKey other = (RuleKey) obj; |
| 72 | return EqualsUtility.equals(getName(), other.getName()) |
| 73 | && EqualsUtility.equals(getVersion(), other.getVersion()); |
| 74 | } |
| 75 | |
| 76 | public String toString() { |
| 77 | return getName() + " [" + getVersion() + "]"; |
| 78 | } |
| 79 | |
| 80 | |
| 81 | } |