 | Report generated by Clover Code Coverage v2.3.1 Sa Aug 2 2008 13:56:32 CEST. |
Clover: Open Source License registered to qedeq.org . |
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-1.0
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| 1 | /* $Id: NodeType.java,v 1.9 2008/07/26 07:59:44 m31 Exp $ | |
| 2 | * | |
| 3 | * This file is part of the project "Hilbert II" - http://www.qedeq.org | |
| 4 | * | |
| 5 | * Copyright 2000-2008, 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.base.module; | |
| 19 | ||
| 20 | ||
| 21 | /** | |
| 22 | * Marker interface for different node types. Might be a definition or theorem or else. | |
| 23 | * | |
| 24 | * TODO mime 20050707: an interface must not know its implementations. This one does! This was | |
| 25 | * necessary as a quick hack to get some information in QedeqBoFactory and Context2XPath. | |
| 26 | * mime 20051216 I still see no solution to get round this. Some JUnit tests work against | |
| 27 | * this interface and get no information about the instance. | |
| 28 | * | |
| 29 | * @version $Revision: 1.9 $ | |
| 30 | * @author Michael Meyling | |
| 31 | */ | |
| 32 | public interface NodeType { | |
| 33 | ||
| 34 | /** | |
| 35 | * Get axiom, if this is an instance of {@link Axiom}. | |
| 36 | * | |
| 37 | * @return Axiom, maybe <code>null</code>. | |
| 38 | */ | |
| 39 | public Axiom getAxiom(); | |
| 40 | ||
| 41 | /** | |
| 42 | * Get definition, if this is an instance of {@link PredicateDefinition}. | |
| 43 | * | |
| 44 | * @return Definition, maybe <code>null</code>. | |
| 45 | */ | |
| 46 | public PredicateDefinition getPredicateDefinition(); | |
| 47 | ||
| 48 | /** | |
| 49 | * Get definition, if this is an instance of {@link FunctionDefinition}. | |
| 50 | * | |
| 51 | * @return Definition, maybe <code>null</code>. | |
| 52 | */ | |
| 53 | public FunctionDefinition getFunctionDefinition(); | |
| 54 | ||
| 55 | /** | |
| 56 | * Get proposition, if this is an instance of {@link Proposition}. | |
| 57 | * | |
| 58 | * @return Proposition, maybe <code>null</code>. | |
| 59 | */ | |
| 60 | public Proposition getProposition(); | |
| 61 | ||
| 62 | /** | |
| 63 | * Get rule, if this is an instance of {@link Rule}. | |
| 64 | * | |
| 65 | * @return Rule, maybe <code>null</code>. | |
| 66 | */ | |
| 67 | public Rule getRule(); | |
| 68 | ||
| 69 | } | |
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