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 org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.Analyzer;
public class TestCJKTokenizer extends BaseTokenStreamTestCase {
class TestToken {
String termText;
int start;
int end;
String type;
}
public TestToken newToken(String termText, int start, int end, int type) {
TestToken token = new TestToken();
token.termText = termText;
token.type = CJKTokenizer.TOKEN_TYPE_NAMES[type];
token.start = start;
token.end = end;
return token;
}
public void checkCJKToken(final String str, final TestToken[] out_tokens) throws IOException {
Analyzer analyzer = new CJKAnalyzer(TEST_VERSION_CURRENT);
String terms[] = new String[out_tokens.length];
int startOffsets[] = new int[out_tokens.length];
int endOffsets[] = new int[out_tokens.length];
String types[] = new String[out_tokens.length];
for (int i = 0; i < out_tokens.length; i++) {
terms[i] = out_tokens[i].termText;
startOffsets[i] = out_tokens[i].start;
endOffsets[i] = out_tokens[i].end;
types[i] = out_tokens[i].type;
}
assertAnalyzesTo(analyzer, str, terms, startOffsets, endOffsets, types, null);
}
public void checkCJKTokenReusable(final Analyzer a, final String str, final TestToken[] out_tokens) throws IOException {
Analyzer analyzer = new CJKAnalyzer(TEST_VERSION_CURRENT);
String terms[] = new String[out_tokens.length];
int startOffsets[] = new int[out_tokens.length];
int endOffsets[] = new int[out_tokens.length];
String types[] = new String[out_tokens.length];
for (int i = 0; i < out_tokens.length; i++) {
terms[i] = out_tokens[i].termText;
startOffsets[i] = out_tokens[i].start;
endOffsets[i] = out_tokens[i].end;
types[i] = out_tokens[i].type;
}
assertAnalyzesToReuse(analyzer, str, terms, startOffsets, endOffsets, types, null);
}
public void testJa1() throws IOException {
String str = "\u4e00\u4e8c\u4e09\u56db\u4e94\u516d\u4e03\u516b\u4e5d\u5341";
TestToken[] out_tokens = {
newToken("\u4e00\u4e8c", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e8c\u4e09", 1, 3, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e09\u56db", 2, 4, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u56db\u4e94", 3, 5, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e94\u516d", 4, 6, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u516d\u4e03", 5, 7, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e03\u516b", 6, 8, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u516b\u4e5d", 7, 9, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e5d\u5341", 8,10, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKToken(str, out_tokens);
}
public void testJa2() throws IOException {
String str = "\u4e00 \u4e8c\u4e09\u56db \u4e94\u516d\u4e03\u516b\u4e5d \u5341";
TestToken[] out_tokens = {
newToken("\u4e00", 0, 1, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e8c\u4e09", 2, 4, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e09\u56db", 3, 5, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e94\u516d", 6, 8, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u516d\u4e03", 7, 9, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u4e03\u516b", 8, 10, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u516b\u4e5d", 9, 11, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u5341", 12,13, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKToken(str, out_tokens);
}
public void testC() throws IOException {
String str = "abc defgh ijklmn opqrstu vwxy z";
TestToken[] out_tokens = {
newToken("abc", 0, 3, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("defgh", 4, 9, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("ijklmn", 10, 16, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("opqrstu", 17, 24, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("vwxy", 25, 29, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("z", 30, 31, CJKTokenizer.SINGLE_TOKEN_TYPE),
};
checkCJKToken(str, out_tokens);
}
public void testMix() throws IOException {
String str = "\u3042\u3044\u3046\u3048\u304aabc\u304b\u304d\u304f\u3051\u3053";
TestToken[] out_tokens = {
newToken("\u3042\u3044", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3044\u3046", 1, 3, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3046\u3048", 2, 4, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3048\u304a", 3, 5, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("abc", 5, 8, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("\u304b\u304d", 8, 10, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304d\u304f", 9, 11, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304f\u3051", 10,12, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3051\u3053", 11,13, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKToken(str, out_tokens);
}
public void testMix2() throws IOException {
String str = "\u3042\u3044\u3046\u3048\u304aab\u3093c\u304b\u304d\u304f\u3051 \u3053";
TestToken[] out_tokens = {
newToken("\u3042\u3044", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3044\u3046", 1, 3, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3046\u3048", 2, 4, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3048\u304a", 3, 5, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("ab", 5, 7, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("\u3093", 7, 8, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("c", 8, 9, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("\u304b\u304d", 9, 11, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304d\u304f", 10, 12, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304f\u3051", 11,13, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3053", 14,15, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKToken(str, out_tokens);
}
public void testSingleChar() throws IOException {
String str = "\u4e00";
TestToken[] out_tokens = {
newToken("\u4e00", 0, 1, CJKTokenizer.DOUBLE_TOKEN_TYPE),
};
checkCJKToken(str, out_tokens);
}
/*
* Full-width text is normalized to half-width
*/
public void testFullWidth() throws Exception {
String str = "Ｔｅｓｔ １２３４";
TestToken[] out_tokens = {
newToken("test", 0, 4, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("1234", 5, 9, CJKTokenizer.SINGLE_TOKEN_TYPE)
};
checkCJKToken(str, out_tokens);
}
/*
* Non-english text (not just CJK) is treated the same as CJK: C1C2 C2C3
*/
public void testNonIdeographic() throws Exception {
String str = "\u4e00 روبرت موير";
TestToken[] out_tokens = {
newToken("\u4e00", 0, 1, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("رو", 2, 4, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("وب", 3, 5, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("بر", 4, 6, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("رت", 5, 7, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("مو", 8, 10, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("وي", 9, 11, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("ير", 10, 12, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKToken(str, out_tokens);
}
/*
* Non-english text with nonletters (non-spacing marks,etc) is treated as C1C2 C2C3,
* except for words are split around non-letters.
*/
public void testNonIdeographicNonLetter() throws Exception {
String str = "\u4e00 رُوبرت موير";
TestToken[] out_tokens = {
newToken("\u4e00", 0, 1, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("ر", 2, 3, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("وب", 4, 6, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("بر", 5, 7, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("رت", 6, 8, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("مو", 9, 11, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("وي", 10, 12, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("ير", 11, 13, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKToken(str, out_tokens);
}
public void testTokenStream() throws Exception {
Analyzer analyzer = new CJKAnalyzer(TEST_VERSION_CURRENT);
assertAnalyzesTo(analyzer, "\u4e00\u4e01\u4e02",
new String[] { "\u4e00\u4e01", "\u4e01\u4e02"});
}
public void testReusableTokenStream() throws Exception {
Analyzer analyzer = new CJKAnalyzer(TEST_VERSION_CURRENT);
String str = "\u3042\u3044\u3046\u3048\u304aabc\u304b\u304d\u304f\u3051\u3053";
TestToken[] out_tokens = {
newToken("\u3042\u3044", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3044\u3046", 1, 3, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3046\u3048", 2, 4, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3048\u304a", 3, 5, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("abc", 5, 8, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("\u304b\u304d", 8, 10, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304d\u304f", 9, 11, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304f\u3051", 10,12, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3051\u3053", 11,13, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKTokenReusable(analyzer, str, out_tokens);
str = "\u3042\u3044\u3046\u3048\u304aab\u3093c\u304b\u304d\u304f\u3051 \u3053";
TestToken[] out_tokens2 = {
newToken("\u3042\u3044", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3044\u3046", 1, 3, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3046\u3048", 2, 4, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3048\u304a", 3, 5, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("ab", 5, 7, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("\u3093", 7, 8, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("c", 8, 9, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("\u304b\u304d", 9, 11, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304d\u304f", 10, 12, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u304f\u3051", 11,13, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("\u3053", 14,15, CJKTokenizer.DOUBLE_TOKEN_TYPE)
};
checkCJKTokenReusable(analyzer, str, out_tokens2);
}
/**
* LUCENE-2207: wrong offset calculated by end()
*/
public void testFinalOffset() throws IOException {
checkCJKToken("あい", new TestToken[] {
newToken("あい", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE) });
checkCJKToken("あい ", new TestToken[] {
newToken("あい", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE) });
checkCJKToken("test", new TestToken[] {
newToken("test", 0, 4, CJKTokenizer.SINGLE_TOKEN_TYPE) });
checkCJKToken("test ", new TestToken[] {
newToken("test", 0, 4, CJKTokenizer.SINGLE_TOKEN_TYPE) });
checkCJKToken("あいtest", new TestToken[] {
newToken("あい", 0, 2, CJKTokenizer.DOUBLE_TOKEN_TYPE),
newToken("test", 2, 6, CJKTokenizer.SINGLE_TOKEN_TYPE) });
checkCJKToken("testあい ", new TestToken[] {
newToken("test", 0, 4, CJKTokenizer.SINGLE_TOKEN_TYPE),
newToken("あい", 4, 6, CJKTokenizer.DOUBLE_TOKEN_TYPE) });
}
}