Coverage Report
File MapUtils.java
Coverage histogram
21% of files have more coverage
Classes
| Class | Line # | Actions | |||
|---|---|---|---|---|---|
| MapUtils | 25 | 12 | 8 |
Contributing tests
This file is covered by 33 tests.
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Source view
| 1 | /* | |
| 2 | * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$) | |
| 3 | * Copyright (C) $$Year-Rel$$ The Jalview Authors | |
| 4 | * | |
| 5 | * This file is part of Jalview. | |
| 6 | * | |
| 7 | * Jalview is free software: you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * as published by the Free Software Foundation, either version 3 | |
| 10 | * of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * Jalview is distributed in the hope that it will be useful, but | |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty | |
| 14 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
| 15 | * PURPOSE. See the GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with Jalview. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | * The Jalview Authors are detailed in the 'AUTHORS' file. | |
| 20 | */ | |
| 21 | package jalview.util; | |
| 22 | ||
| 23 | import java.util.Map; | |
| 24 | ||
| 25 | public class MapUtils | |
| 26 | { | |
| 27 | /** | |
| 28 | * Return the value of the first key that exists in the map and has a non-null | |
| 29 | * value | |
| 30 | */ | |
| 31 | 94 |  public static <K, V> V getFirst(Map<K, V> map, K... keys) |
| 32 | { | |
| 33 | 94 | return getFirst(false, map, keys); |
| 34 | } | |
| 35 | ||
| 36 | /** | |
| 37 | * Return the value of the first key that exists in the map - optionally | |
| 38 | * limiting to only returning non-null values for first extant key encountered | |
| 39 | */ | |
| 40 | 94 | public static <K, V> V getFirst(boolean nonNull, Map<K, V> map, K... keys) |
| 41 | { | |
| 42 | 94 | for (K key : keys) |
| 43 | { | |
| 44 | 124 | if (map.containsKey(key)) |
| 45 | { | |
| 46 | 94 | if (!(nonNull && (map.get(key) == null))) |
| 47 | { | |
| 48 | 94 | return map.get(key); |
| 49 | } | |
| 50 | 0 | else if (!nonNull) |
| 51 | { | |
| 52 | 0 | return map.get(key); |
| 53 | } | |
| 54 | } | |
| 55 | } | |
| 56 | 0 | return null; |
| 57 | } | |
| 58 | ||
| 59 | /** | |
| 60 | * peeks in to the map and returns true if one of a bunch of keys is contained | |
| 61 | * in it | |
| 62 | * | |
| 63 | * @param <K> | |
| 64 | * @param map | |
| 65 | * @param keys | |
| 66 | * @return | |
| 67 | */ | |
| 68 | 49 | public static <K> boolean containsAKey(Map<K, ?> map, K... keys) |
| 69 | { | |
| 70 | 49 | for (K key : keys) |
| 71 | { | |
| 72 | 66 | if (map.containsKey(key)) |
| 73 | 47 | return true; |
| 74 | } | |
| 75 | 2 | return false; |
| 76 | } | |
| 77 | } |