| 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.bo.logic.model; |
| 17 | |
| 18 | import org.qedeq.base.utility.Enumerator; |
| 19 | import org.qedeq.kernel.bo.logic.common.SubjectVariable; |
| 20 | |
| 21 | /** |
| 22 | * One subject variable allocation for our model. |
| 23 | * |
| 24 | * @author Michael Meyling |
| 25 | */ |
| 26 | public class SubjectVariableAllocation { |
| 27 | |
| 28 | /** This subject variable. */ |
| 29 | private final SubjectVariable variable; |
| 30 | |
| 31 | /** Reference to current interpretation entity. */ |
| 32 | private final Enumerator value; |
| 33 | |
| 34 | /** Is this a fixed interpretatin? */ |
| 35 | private boolean fixed; |
| 36 | |
| 37 | /** |
| 38 | * Constructor. |
| 39 | * |
| 40 | * @param variable Subject variable. |
| 41 | */ |
| 42 | public SubjectVariableAllocation(final SubjectVariable variable) { |
| 43 | this.variable = variable; |
| 44 | this.value = new Enumerator(); |
| 45 | this.fixed = false; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Constructor. |
| 50 | * |
| 51 | * @param variable Subject variable. |
| 52 | * @param value Value for subject variable. |
| 53 | */ |
| 54 | public SubjectVariableAllocation(final SubjectVariable variable, final int value) { |
| 55 | this.variable = variable; |
| 56 | this.value = new Enumerator(value); |
| 57 | this.fixed = true; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Get subject variable. |
| 62 | * |
| 63 | * @return Subject variable. |
| 64 | */ |
| 65 | public SubjectVariable getVariable() { |
| 66 | return variable; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Is this a fixed interpretation? |
| 71 | * |
| 72 | * @return Is this a fixed interpretation? |
| 73 | */ |
| 74 | public boolean isFixed() { |
| 75 | return fixed; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Get reference to current model entity. |
| 80 | * |
| 81 | * @return Entity number. |
| 82 | */ |
| 83 | public int getValue() { |
| 84 | return value.getNumber(); |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Increase model entity number. |
| 89 | */ |
| 90 | public void increaseNumber() { |
| 91 | if (fixed) { |
| 92 | throw new IllegalStateException("variable could not iterate: " + toString()); |
| 93 | } |
| 94 | value.increaseNumber(); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Reset model entity number. |
| 99 | */ |
| 100 | public void resetNumber() { |
| 101 | if (fixed) { |
| 102 | throw new IllegalStateException("variable could not iterate: " + toString()); |
| 103 | } |
| 104 | value.reset(); |
| 105 | } |
| 106 | |
| 107 | public String toString() { |
| 108 | return variable.toString() + "=" + value.getNumber(); |
| 109 | } |
| 110 | |
| 111 | } |