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.xml.handler.module; |
17 | |
18 | import org.qedeq.kernel.se.base.module.Hypothesis; |
19 | import org.qedeq.kernel.se.dto.module.HypothesisVo; |
20 | import org.qedeq.kernel.xml.common.XmlSyntaxException; |
21 | import org.qedeq.kernel.xml.handler.common.AbstractSimpleHandler; |
22 | import org.qedeq.kernel.xml.handler.common.SimpleAttributes; |
23 | |
24 | |
25 | /** |
26 | * Parse a hypothesis. |
27 | * |
28 | * @author Michael Meyling |
29 | */ |
30 | public class HypothesisHandler extends AbstractSimpleHandler { |
31 | |
32 | /** Handler for axiom formula. */ |
33 | private final FormulaHandler formulaHandler; |
34 | |
35 | /** Hypothesis value object. */ |
36 | private HypothesisVo hypothesis; |
37 | |
38 | /** |
39 | * Deals with axioms. |
40 | * |
41 | * @param handler Parent handler. |
42 | */ |
43 | public HypothesisHandler(final AbstractSimpleHandler handler) { |
44 | super(handler, "HYPOTHESIS"); |
45 | formulaHandler = new FormulaHandler(this); |
46 | } |
47 | |
48 | public final void init() { |
49 | hypothesis = null; |
50 | } |
51 | |
52 | /** |
53 | * Get hypothesis. |
54 | * |
55 | * @return Hypothesis. |
56 | */ |
57 | public final Hypothesis getHypothesis() { |
58 | return hypothesis; |
59 | } |
60 | |
61 | public final void startElement(final String name, final SimpleAttributes attributes) |
62 | throws XmlSyntaxException { |
63 | if (getStartTag().equals(name)) { |
64 | hypothesis = new HypothesisVo(); |
65 | hypothesis.setLabel(attributes.getString("label")); |
66 | } else if (formulaHandler.getStartTag().equals(name)) { |
67 | changeHandler(formulaHandler, name, attributes); |
68 | } else { |
69 | throw XmlSyntaxException.createUnexpectedTagException(name); |
70 | } |
71 | } |
72 | |
73 | public final void endElement(final String name) throws XmlSyntaxException { |
74 | if (getStartTag().equals(name)) { |
75 | // nothing to do |
76 | } else if (formulaHandler.getStartTag().equals(name)) { |
77 | hypothesis.setFormula(formulaHandler.getFormula()); |
78 | } else { |
79 | throw XmlSyntaxException.createUnexpectedTagException(name); |
80 | } |
81 | } |
82 | |
83 | } |