Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
AndNotQuery |
|
| 3.0;3 |
1 | /** | |
2 | * Distribution License: | |
3 | * JSword is free software; you can redistribute it and/or modify it under | |
4 | * the terms of the GNU Lesser General Public License, version 2.1 or later | |
5 | * as published by the Free Software Foundation. This program is distributed | |
6 | * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even | |
7 | * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
8 | * See the GNU Lesser General Public License for more details. | |
9 | * | |
10 | * The License is available on the internet at: | |
11 | * http://www.gnu.org/copyleft/lgpl.html | |
12 | * or by writing to: | |
13 | * Free Software Foundation, Inc. | |
14 | * 59 Temple Place - Suite 330 | |
15 | * Boston, MA 02111-1307, USA | |
16 | * | |
17 | * © CrossWire Bible Society, 2005 - 2016 | |
18 | */ | |
19 | package org.crosswire.jsword.index.query; | |
20 | ||
21 | import org.crosswire.jsword.book.BookException; | |
22 | import org.crosswire.jsword.index.Index; | |
23 | import org.crosswire.jsword.passage.Key; | |
24 | ||
25 | /** | |
26 | * An "And Not" query specifies that a result needs to be in the left but not in | |
27 | * the right query result. | |
28 | * | |
29 | * @see gnu.lgpl.License The GNU Lesser General Public License for details. | |
30 | * @author DM Smith | |
31 | */ | |
32 | public class AndNotQuery extends AbstractBinaryQuery { | |
33 | ||
34 | /** | |
35 | * Create a query where the right query result is subtracted from the left | |
36 | * query result. | |
37 | * | |
38 | * @param theLeftQuery | |
39 | * @param theRightQuery | |
40 | */ | |
41 | public AndNotQuery(Query theLeftQuery, Query theRightQuery) { | |
42 | 0 | super(theLeftQuery, theRightQuery); |
43 | 0 | } |
44 | ||
45 | /* | |
46 | * (non-Javadoc) | |
47 | * | |
48 | * @see | |
49 | * org.crosswire.jsword.index.search.parse.Query#find(org.crosswire.jsword | |
50 | * .index.search.Index) | |
51 | */ | |
52 | public Key find(Index index) throws BookException { | |
53 | 0 | Key left = getLeftQuery().find(index); |
54 | ||
55 | 0 | if (left.isEmpty()) { |
56 | 0 | return left; |
57 | } | |
58 | ||
59 | 0 | Key right = getRightQuery().find(index); |
60 | ||
61 | 0 | if (right.isEmpty()) { |
62 | 0 | return left; |
63 | } | |
64 | ||
65 | 0 | left.removeAll(right); |
66 | ||
67 | 0 | return left; |
68 | } | |
69 | ||
70 | } |