| 1 | /******************************************************************************* | |
| 2 | * Copyright (C) 2026, Leo Galambos | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions are met: | |
| 7 | * | |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, | |
| 9 | * this list of conditions and the following disclaimer. | |
| 10 | * | |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 12 | * this list of conditions and the following disclaimer in the documentation | |
| 13 | * and/or other materials provided with the distribution. | |
| 14 | * | |
| 15 | * 3. All advertising materials mentioning features or use of this software must | |
| 16 | * display the following acknowledgement: | |
| 17 | * This product includes software developed by the Egothor project. | |
| 18 | * | |
| 19 | * 4. Neither the name of the copyright holder nor the names of its contributors | |
| 20 | * may be used to endorse or promote products derived from this software | |
| 21 | * without specific prior written permission. | |
| 22 | * | |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 24 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 30 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 31 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 32 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 33 | * POSSIBILITY OF SUCH DAMAGE. | |
| 34 | ******************************************************************************/ | |
| 35 | package org.egothor.stemmer.trie; | |
| 36 | ||
| 37 | import java.util.LinkedHashMap; | |
| 38 | import java.util.Map; | |
| 39 | ||
| 40 | /** | |
| 41 | * Mutable build-time node. | |
| 42 | * | |
| 43 | * <p> | |
| 44 | * The maps exposed by the accessors are the internal mutable backing state of | |
| 45 | * the node. They are returned directly for efficiency and are intended only for | |
| 46 | * closely related trie-building infrastructure. | |
| 47 | * | |
| 48 | * @param <V> value type | |
| 49 | */ | |
| 50 | public final class MutableNode<V> { | |
| 51 | ||
| 52 | /** | |
| 53 | * Child nodes indexed by transition character. | |
| 54 | */ | |
| 55 | private final Map<Character, MutableNode<V>> children; | |
| 56 | ||
| 57 | /** | |
| 58 | * Local terminal value counts stored exactly at this node. | |
| 59 | */ | |
| 60 | private final Map<V, Integer> valueCounts; | |
| 61 | ||
| 62 | /** | |
| 63 | * Creates an empty node. | |
| 64 | */ | |
| 65 | public MutableNode() { | |
| 66 | this.children = new LinkedHashMap<>(); | |
| 67 | this.valueCounts = new LinkedHashMap<>(); | |
| 68 | } | |
| 69 | ||
| 70 | /** | |
| 71 | * Returns the internal child-node map indexed by transition character. | |
| 72 | * | |
| 73 | * <p> | |
| 74 | * The returned map is the internal mutable backing state of this node and is | |
| 75 | * exposed only for efficient cooperation with trie-building infrastructure. | |
| 76 | * | |
| 77 | * @return internal child-node map | |
| 78 | */ | |
| 79 | public Map<Character, MutableNode<V>> children() { | |
| 80 |
1
1. children : replaced return value with Collections.emptyMap for org/egothor/stemmer/trie/MutableNode::children → KILLED |
return this.children; |
| 81 | } | |
| 82 | ||
| 83 | /** | |
| 84 | * Returns the internal local terminal value-count map. | |
| 85 | * | |
| 86 | * <p> | |
| 87 | * The returned map is the internal mutable backing state of this node and is | |
| 88 | * exposed only for efficient cooperation with trie-building infrastructure. | |
| 89 | * | |
| 90 | * @return internal local value-count map | |
| 91 | */ | |
| 92 | public Map<V, Integer> valueCounts() { | |
| 93 |
1
1. valueCounts : replaced return value with Collections.emptyMap for org/egothor/stemmer/trie/MutableNode::valueCounts → KILLED |
return this.valueCounts; |
| 94 | } | |
| 95 | } | |
Mutations | ||
| 80 |
1.1 |
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| 93 |
1.1 |