1 package org.apache.lucene.analysis.en;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
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9 * the License. You may obtain a copy of the License at
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21 * Minimal plural stemmer for English.
23 * This stemmer implements the "S-Stemmer" from
24 * <i>How Effective Is Suffixing?</i>
27 public class EnglishMinimalStemmer {
28 @SuppressWarnings("fallthrough")
29 public int stem(char s[], int len) {
30 if (len < 3 || s[len-1] != 's')
37 if (len > 3 && s[len-3] == 'i' && s[len-4] != 'a' && s[len-4] != 'e') {
41 if (s[len-3] == 'i' || s[len-3] == 'a' || s[len-3] == 'o' || s[len-3] == 'e')
42 return len; /* intentional fallthrough */
43 default: return len - 1;