X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/th/ThaiAnalyzer.java diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/th/ThaiAnalyzer.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/th/ThaiAnalyzer.java new file mode 100644 index 0000000..d900512 --- /dev/null +++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/th/ThaiAnalyzer.java @@ -0,0 +1,68 @@ +package org.apache.lucene.analysis.th; + +/** + * Copyright 2006 The Apache Software Foundation + * + * Licensed 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.Reader; + +import org.apache.lucene.analysis.ReusableAnalyzerBase; +import org.apache.lucene.analysis.Analyzer; +import org.apache.lucene.analysis.StopAnalyzer; +import org.apache.lucene.analysis.StopFilter; +import org.apache.lucene.analysis.LowerCaseFilter; +import org.apache.lucene.analysis.TokenStream; +import org.apache.lucene.analysis.Tokenizer; +import org.apache.lucene.analysis.standard.StandardAnalyzer; +import org.apache.lucene.analysis.standard.StandardFilter; +import org.apache.lucene.analysis.standard.StandardTokenizer; +import org.apache.lucene.util.Version; + +/** + * {@link Analyzer} for Thai language. It uses {@link java.text.BreakIterator} to break words. + * @version 0.2 + * + *

NOTE: This class uses the same {@link Version} + * dependent settings as {@link StandardAnalyzer}.

+ */ +public final class ThaiAnalyzer extends ReusableAnalyzerBase { + private final Version matchVersion; + + public ThaiAnalyzer(Version matchVersion) { + this.matchVersion = matchVersion; + } + + /** + * Creates + * {@link org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents} + * used to tokenize all the text in the provided {@link Reader}. + * + * @return {@link org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents} + * built from a {@link StandardTokenizer} filtered with + * {@link StandardFilter}, {@link LowerCaseFilter}, {@link ThaiWordFilter}, and + * {@link StopFilter} + */ + @Override + protected TokenStreamComponents createComponents(String fieldName, + Reader reader) { + final Tokenizer source = new StandardTokenizer(matchVersion, reader); + TokenStream result = new StandardFilter(matchVersion, source); + if (matchVersion.onOrAfter(Version.LUCENE_31)) + result = new LowerCaseFilter(matchVersion, result); + result = new ThaiWordFilter(matchVersion, result); + return new TokenStreamComponents(source, new StopFilter(matchVersion, + result, StopAnalyzer.ENGLISH_STOP_WORDS_SET)); + } +}