1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
package com.yahoo.language.lucene;
import com.yahoo.component.provider.ComponentRegistry;
import com.yahoo.config.FileReference;
import com.yahoo.language.Language;
import com.yahoo.language.process.StemMode;
import com.yahoo.language.process.Token;
import org.junit.Test;
import java.io.File;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import static org.junit.Assert.assertEquals;
public class LuceneTokenizerTest {
@Test
public void testTokenizer() {
String text = "This is my Text";
var tokenizer = new LuceneTokenizer(new LuceneAnalysisConfig
.Builder()
.configDir(FileReference.mockFileReferenceForUnitTesting(new File(".")))
.build());
Iterable<Token> tokens = tokenizer
.tokenize(text, Language.ENGLISH, StemMode.ALL, true);
assertEquals(List.of("my", "text"), tokenStrings(tokens));
}
@Test
public void testLithuanianTokenizer() {
String text = "Žalgirio mūšio data yra 1410 metai";
var tokenizer = new LuceneTokenizer(new LuceneAnalysisConfig
.Builder()
.configDir(FileReference.mockFileReferenceForUnitTesting(new File(".")))
.build());
Iterable<Token> tokens = tokenizer
.tokenize(text, Language.LITHUANIAN, StemMode.ALL, true);
assertEquals(List.of("žalgir", "mūš", "dat", "1410", "met"), tokenStrings(tokens));
}
private void assertToken(String tokenString, Iterator<Token> tokens) {
Token t = tokens.next();
assertEquals(tokenString, t.getTokenString());
}
private List<Token> iterableToList(Iterable<Token> tokens) {
List<Token> tokenList = new ArrayList<>();
tokens.forEach(tokenList::add);
return tokenList;
}
private List<String> tokenStrings(Iterable<Token> tokens) {
List<String> tokenList = new ArrayList<>();
tokens.forEach(token -> {
tokenList.add(token.getTokenString());
});
return tokenList;
}
@Test
public void testAnalyzerConfiguration() {
String languageCode = Language.ENGLISH.languageCode();
LuceneAnalysisConfig enConfig = new LuceneAnalysisConfig.Builder()
.configDir(FileReference.mockFileReferenceForUnitTesting(new File(".")))
.analysis(
Map.of(languageCode,
new LuceneAnalysisConfig
.Analysis
.Builder()
.tokenFilters(List.of(
new LuceneAnalysisConfig
.Analysis
.TokenFilters
.Builder()
.name("englishMinimalStem"),
new LuceneAnalysisConfig
.Analysis
.TokenFilters
.Builder()
.name("uppercase"))))
).build();
LuceneLinguistics linguistics = new LuceneLinguistics(enConfig, new ComponentRegistry<>());
Iterable<Token> tokens = linguistics
.getTokenizer()
.tokenize("Dogs and cats", Language.ENGLISH, StemMode.ALL, false);
assertEquals(List.of("DOG", "AND", "CAT"), tokenStrings(tokens));
}
@Test
public void testEnglishStemmerAnalyzerConfiguration() {
String languageCode = Language.ENGLISH.languageCode();
LuceneAnalysisConfig enConfig = new LuceneAnalysisConfig.Builder()
.configDir(FileReference.mockFileReferenceForUnitTesting(new File(".")))
.analysis(
Map.of(languageCode,
new LuceneAnalysisConfig.Analysis.Builder().tokenFilters(List.of(
new LuceneAnalysisConfig
.Analysis
.TokenFilters
.Builder()
.name("englishMinimalStem"))))
).build();
LuceneLinguistics linguistics = new LuceneLinguistics(enConfig, new ComponentRegistry<>());
Iterable<Token> tokens = linguistics
.getTokenizer()
.tokenize("Dogs and Cats", Language.ENGLISH, StemMode.ALL, false);
assertEquals(List.of("Dog", "and", "Cat"), tokenStrings(tokens));
}
@Test
public void testStemmerWithStopWords() {
String languageCode = Language.ENGLISH.languageCode();
LuceneAnalysisConfig enConfig = new LuceneAnalysisConfig.Builder()
.configDir(FileReference.mockFileReferenceForUnitTesting(new File(".")))
.analysis(
Map.of(languageCode,
new LuceneAnalysisConfig.Analysis.Builder().tokenFilters(List.of(
new LuceneAnalysisConfig
.Analysis
.TokenFilters
.Builder()
.name("englishMinimalStem"),
new LuceneAnalysisConfig
.Analysis
.TokenFilters
.Builder()
.name("stop")
.conf("words", "stopwords.txt"))))
).build();
LuceneLinguistics linguistics = new LuceneLinguistics(enConfig, new ComponentRegistry<>());
Iterable<Token> tokens = linguistics
.getTokenizer()
.tokenize("Dogs and Cats", Language.ENGLISH, StemMode.ALL, false);
assertEquals(List.of("Dog", "Cat"), tokenStrings(tokens));
}
}
|