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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
package org.elasticsearch.index.analysis;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.core.LowerCaseFilter;
import org.apache.lucene.analysis.core.StopAnalyzer;
import org.apache.lucene.analysis.core.StopFilter;
import org.apache.lucene.analysis.standard.StandardFilter;
import org.apache.lucene.analysis.standard.StandardTokenizer;
import org.apache.lucene.analysis.standard.std40.StandardTokenizer40;
import org.apache.lucene.analysis.util.CharArraySet;
import org.apache.lucene.analysis.util.StopwordAnalyzerBase;
import org.apache.lucene.util.Version;
public class StandardHtmlStripAnalyzer extends StopwordAnalyzerBase {
/**
* @deprecated use {@link StandardHtmlStripAnalyzer#StandardHtmlStripAnalyzer(CharArraySet)} instead
*/
@Deprecated
public StandardHtmlStripAnalyzer() {
super(StopAnalyzer.ENGLISH_STOP_WORDS_SET);
}
public StandardHtmlStripAnalyzer(CharArraySet stopwords) {
super(stopwords);
}
@Override
protected TokenStreamComponents createComponents(final String fieldName) {
final Tokenizer src;
if (getVersion().onOrAfter(Version.LUCENE_4_7_0)) {
src = new StandardTokenizer();
} else {
src = new StandardTokenizer40();
}
TokenStream tok = new StandardFilter(src);
tok = new LowerCaseFilter(tok);
if (!stopwords.isEmpty()) {
tok = new StopFilter(tok, stopwords);
}
return new TokenStreamComponents(src, tok);
}
}
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