package org.apache.lucene.analysis.cn;
/*
* 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.io.StringReader;
import org.apache.lucene.analysis.*;
import org.apache.lucene.analysis.core.WhitespaceTokenizer;
import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
import org.apache.lucene.util.Version;
/** @deprecated Remove this test when ChineseAnalyzer is removed. */
@Deprecated
public class TestChineseTokenizer extends BaseTokenStreamTestCase
{
public void testOtherLetterOffset() throws IOException
{
String s = "a天b";
ChineseTokenizer tokenizer = new ChineseTokenizer(new StringReader(s));
int correctStartOffset = 0;
int correctEndOffset = 1;
OffsetAttribute offsetAtt = tokenizer.getAttribute(OffsetAttribute.class);
while (tokenizer.incrementToken()) {
assertEquals(correctStartOffset, offsetAtt.startOffset());
assertEquals(correctEndOffset, offsetAtt.endOffset());
correctStartOffset++;
correctEndOffset++;
}
}
public void testReusableTokenStream() throws Exception
{
Analyzer a = new ChineseAnalyzer();
assertAnalyzesToReuse(a, "中华人民共和国",
new String[] { "中", "华", "人", "民", "共", "和", "国" },
new int[] { 0, 1, 2, 3, 4, 5, 6 },
new int[] { 1, 2, 3, 4, 5, 6, 7 });
assertAnalyzesToReuse(a, "北京市",
new String[] { "北", "京", "市" },
new int[] { 0, 1, 2 },
new int[] { 1, 2, 3 });
}
/*
* Analyzer that just uses ChineseTokenizer, not ChineseFilter.
* convenience to show the behavior of the tokenizer
*/
private class JustChineseTokenizerAnalyzer extends Analyzer {
@Override
public TokenStreamComponents createComponents(String fieldName, Reader reader) {
return new TokenStreamComponents(new ChineseTokenizer(reader));
}
}
/*
* Analyzer that just uses ChineseFilter, not ChineseTokenizer.
* convenience to show the behavior of the filter.
*/
private class JustChineseFilterAnalyzer extends Analyzer {
@Override
public TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new WhitespaceTokenizer(Version.LUCENE_CURRENT, reader);
return new TokenStreamComponents(tokenizer, new ChineseFilter(tokenizer));
}
}
/*
* ChineseTokenizer tokenizes numbers as one token, but they are filtered by ChineseFilter
*/
public void testNumerics() throws Exception
{
Analyzer justTokenizer = new JustChineseTokenizerAnalyzer();
assertAnalyzesTo(justTokenizer, "中1234", new String[] { "中", "1234" });
// in this case the ChineseAnalyzer (which applies ChineseFilter) will remove the numeric token.
Analyzer a = new ChineseAnalyzer();
assertAnalyzesTo(a, "中1234", new String[] { "中" });
}
/*
* ChineseTokenizer tokenizes english similar to SimpleAnalyzer.
* it will lowercase terms automatically.
*
* ChineseFilter has an english stopword list, it also removes any single character tokens.
* the stopword list is case-sensitive.
*/
public void testEnglish() throws Exception
{
Analyzer chinese = new ChineseAnalyzer();
assertAnalyzesTo(chinese, "This is a Test. b c d",
new String[] { "test" });
Analyzer justTokenizer = new JustChineseTokenizerAnalyzer();
assertAnalyzesTo(justTokenizer, "This is a Test. b c d",
new String[] { "this", "is", "a", "test", "b", "c", "d" });
Analyzer justFilter = new JustChineseFilterAnalyzer();
assertAnalyzesTo(justFilter, "This is a Test. b c d",
new String[] { "This", "Test." });
}
/** blast some random strings through the analyzer */
public void testRandomStrings() throws Exception {
checkRandomData(random(), new ChineseAnalyzer(), 10000*RANDOM_MULTIPLIER);
}
}