package org.apache.lucene.analysis.cjk;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.IOException;
import java.io.Reader;
import java.util.Random;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.TokenFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.charfilter.MappingCharFilter;
import org.apache.lucene.analysis.charfilter.NormalizeCharMap;
import org.apache.lucene.analysis.core.KeywordTokenizer;
import org.apache.lucene.analysis.core.StopFilter;
import org.apache.lucene.analysis.standard.StandardTokenizer;
import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
import org.apache.lucene.analysis.util.CharArraySet;
/**
* Most tests adopted from TestCJKTokenizer
*/
public class TestCJKAnalyzer extends BaseTokenStreamTestCase {
private Analyzer analyzer = new CJKAnalyzer(TEST_VERSION_CURRENT);
public void testJa1() throws IOException {
assertAnalyzesTo(analyzer, "一二三四五六七八九十",
new String[] { "一二", "二三", "三四", "四五", "五六", "六七", "七八", "八九", "九十" },
new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8 },
new int[] { 2, 3, 4, 5, 6, 7, 8, 9, 10 },
new String[] { "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>" },
new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1 });
}
public void testJa2() throws IOException {
assertAnalyzesTo(analyzer, "一 二三四 五六七八九 十",
new String[] { "一", "二三", "三四", "五六", "六七", "七八", "八九", "十" },
new int[] { 0, 2, 3, 6, 7, 8, 9, 12 },
new int[] { 1, 4, 5, 8, 9, 10, 11, 13 },
new String[] { "<SINGLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<SINGLE>" },
new int[] { 1, 1, 1, 1, 1, 1, 1, 1 });
}
public void testC() throws IOException {
assertAnalyzesTo(analyzer, "abc defgh ijklmn opqrstu vwxy z",
new String[] { "abc", "defgh", "ijklmn", "opqrstu", "vwxy", "z" },
new int[] { 0, 4, 10, 17, 25, 30 },
new int[] { 3, 9, 16, 24, 29, 31 },
new String[] { "<ALPHANUM>", "<ALPHANUM>", "<ALPHANUM>", "<ALPHANUM>", "<ALPHANUM>", "<ALPHANUM>" },
new int[] { 1, 1, 1, 1, 1, 1 });
}
/**
* LUCENE-2207: wrong offset calculated by end()
*/
public void testFinalOffset() throws IOException {
assertAnalyzesTo(analyzer, "あい",
new String[] { "あい" },
new int[] { 0 },
new int[] { 2 },
new String[] { "<DOUBLE>" },
new int[] { 1 });
assertAnalyzesTo(analyzer, "あい ",
new String[] { "あい" },
new int[] { 0 },
new int[] { 2 },
new String[] { "<DOUBLE>" },
new int[] { 1 });
assertAnalyzesTo(analyzer, "test",
new String[] { "test" },
new int[] { 0 },
new int[] { 4 },
new String[] { "<ALPHANUM>" },
new int[] { 1 });
assertAnalyzesTo(analyzer, "test ",
new String[] { "test" },
new int[] { 0 },
new int[] { 4 },
new String[] { "<ALPHANUM>" },
new int[] { 1 });
assertAnalyzesTo(analyzer, "あいtest",
new String[] { "あい", "test" },
new int[] { 0, 2 },
new int[] { 2, 6 },
new String[] { "<DOUBLE>", "<ALPHANUM>" },
new int[] { 1, 1 });
assertAnalyzesTo(analyzer, "testあい ",
new String[] { "test", "あい" },
new int[] { 0, 4 },
new int[] { 4, 6 },
new String[] { "<ALPHANUM>", "<DOUBLE>" },
new int[] { 1, 1 });
}
public void testMix() throws IOException {
assertAnalyzesTo(analyzer, "あいうえおabcかきくけこ",
new String[] { "あい", "いう", "うえ", "えお", "abc", "かき", "きく", "くけ", "けこ" },
new int[] { 0, 1, 2, 3, 5, 8, 9, 10, 11 },
new int[] { 2, 3, 4, 5, 8, 10, 11, 12, 13 },
new String[] { "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<ALPHANUM>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>" },
new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1});
}
public void testMix2() throws IOException {
assertAnalyzesTo(analyzer, "あいうえおabんcかきくけ こ",
new String[] { "あい", "いう", "うえ", "えお", "ab", "ん", "c", "かき", "きく", "くけ", "こ" },
new int[] { 0, 1, 2, 3, 5, 7, 8, 9, 10, 11, 14 },
new int[] { 2, 3, 4, 5, 7, 8, 9, 11, 12, 13, 15 },
new String[] { "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<ALPHANUM>", "<SINGLE>", "<ALPHANUM>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<SINGLE>" },
new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 });
}
/**
* Non-english text (outside of CJK) is treated normally, according to unicode rules
*/
public void testNonIdeographic() throws IOException {
assertAnalyzesTo(analyzer, "一 روبرت موير",
new String[] { "一", "روبرت", "موير" },
new int[] { 0, 2, 8 },
new int[] { 1, 7, 12 },
new String[] { "<SINGLE>", "<ALPHANUM>", "<ALPHANUM>" },
new int[] { 1, 1, 1 });
}
/**
* Same as the above, except with a nonspacing mark to show correctness.
*/
public void testNonIdeographicNonLetter() throws IOException {
assertAnalyzesTo(analyzer, "一 رُوبرت موير",
new String[] { "一", "رُوبرت", "موير" },
new int[] { 0, 2, 9 },
new int[] { 1, 8, 13 },
new String[] { "<SINGLE>", "<ALPHANUM>", "<ALPHANUM>" },
new int[] { 1, 1, 1 });
}
public void testSurrogates() throws IOException {
assertAnalyzesTo(analyzer, "𩬅艱鍟䇹愯瀛",
new String[] { "𩬅艱", "艱鍟", "鍟䇹", "䇹愯", "愯瀛" },
new int[] { 0, 2, 3, 4, 5 },
new int[] { 3, 4, 5, 6, 7 },
new String[] { "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>" },
new int[] { 1, 1, 1, 1, 1 });
}
public void testReusableTokenStream() throws IOException {
assertAnalyzesToReuse(analyzer, "あいうえおabcかきくけこ",
new String[] { "あい", "いう", "うえ", "えお", "abc", "かき", "きく", "くけ", "けこ" },
new int[] { 0, 1, 2, 3, 5, 8, 9, 10, 11 },
new int[] { 2, 3, 4, 5, 8, 10, 11, 12, 13 },
new String[] { "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<ALPHANUM>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>" },
new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1});
assertAnalyzesToReuse(analyzer, "あいうえおabんcかきくけ こ",
new String[] { "あい", "いう", "うえ", "えお", "ab", "ん", "c", "かき", "きく", "くけ", "こ" },
new int[] { 0, 1, 2, 3, 5, 7, 8, 9, 10, 11, 14 },
new int[] { 2, 3, 4, 5, 7, 8, 9, 11, 12, 13, 15 },
new String[] { "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<ALPHANUM>", "<SINGLE>", "<ALPHANUM>", "<DOUBLE>", "<DOUBLE>", "<DOUBLE>", "<SINGLE>" },
new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 });
}
public void testSingleChar() throws IOException {
assertAnalyzesTo(analyzer, "一",
new String[] { "一" },
new int[] { 0 },
new int[] { 1 },
new String[] { "<SINGLE>" },
new int[] { 1 });
}
public void testTokenStream() throws IOException {
assertAnalyzesTo(analyzer, "一丁丂",
new String[] { "一丁", "丁丂"},
new int[] { 0, 1 },
new int[] { 2, 3 },
new String[] { "<DOUBLE>", "<DOUBLE>" },
new int[] { 1, 1 });
}
/** test that offsets are correct when mappingcharfilter is previously applied */
public void testChangedOffsets() throws IOException {
final NormalizeCharMap.Builder builder = new NormalizeCharMap.Builder();
builder.add("a", "一二");
builder.add("b", "二三");
final NormalizeCharMap norm = builder.build();
Analyzer analyzer = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new StandardTokenizer(TEST_VERSION_CURRENT, reader);
return new TokenStreamComponents(tokenizer, new CJKBigramFilter(tokenizer));
}
@Override
protected Reader initReader(String fieldName, Reader reader) {
return new MappingCharFilter(norm, reader);
}
};
assertAnalyzesTo(analyzer, "ab",
new String[] { "一二", "二二", "二三" },
new int[] { 0, 0, 1 },
new int[] { 1, 1, 2 });
// note: offsets are strange since this is how the charfilter maps them...
// before bigramming, the 4 tokens look like:
// { 0, 0, 1, 1 },
// { 0, 1, 1, 2 }
}
private static class FakeStandardTokenizer extends TokenFilter {
final TypeAttribute typeAtt = addAttribute(TypeAttribute.class);
public FakeStandardTokenizer(TokenStream input) {
super(input);
}
@Override
public boolean incrementToken() throws IOException {
if (input.incrementToken()) {
typeAtt.setType(StandardTokenizer.TOKEN_TYPES[StandardTokenizer.IDEOGRAPHIC]);
return true;
} else {
return false;
}
}
}
public void testSingleChar2() throws Exception {
Analyzer analyzer = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
TokenFilter filter = new FakeStandardTokenizer(tokenizer);
filter = new StopFilter(TEST_VERSION_CURRENT, filter, CharArraySet.EMPTY_SET);
filter = new CJKBigramFilter(filter);
return new TokenStreamComponents(tokenizer, filter);
}
};
assertAnalyzesTo(analyzer, "一",
new String[] { "一" },
new int[] { 0 },
new int[] { 1 },
new String[] { "<SINGLE>" },
new int[] { 1 });
}
/** blast some random strings through the analyzer */
public void testRandomStrings() throws Exception {
checkRandomData(random(), new CJKAnalyzer(TEST_VERSION_CURRENT), 1000*RANDOM_MULTIPLIER);
}
/** blast some random strings through the analyzer */
public void testRandomHugeStrings() throws Exception {
Random random = random();
checkRandomData(random, new CJKAnalyzer(TEST_VERSION_CURRENT), 100*RANDOM_MULTIPLIER, 8192);
}
public void testEmptyTerm() throws IOException {
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new KeywordTokenizer(reader);
return new TokenStreamComponents(tokenizer, new CJKBigramFilter(tokenizer));
}
};
checkOneTermReuse(a, "", "");
}
}