package org.apache.lucene.analysis;
/**
* 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.Reader;
import org.apache.lucene.util.Version;
/** An {@link Analyzer} that filters {@link LetterTokenizer}
* with {@link LowerCaseFilter}
* <p>
* <a name="version">You must specify the required {@link Version} compatibility
* when creating {@link CharTokenizer}:
* <ul>
* <li>As of 3.1, {@link LowerCaseTokenizer} uses an int based API to normalize and
* detect token codepoints. See {@link CharTokenizer#isTokenChar(int)} and
* {@link CharTokenizer#normalize(int)} for details.</li>
* </ul>
* <p>
**/
public final class SimpleAnalyzer extends ReusableAnalyzerBase {
private final Version matchVersion;
/**
* Creates a new {@link SimpleAnalyzer}
* @param matchVersion Lucene version to match See {@link <a href="#version">above</a>}
*/
public SimpleAnalyzer(Version matchVersion) {
this.matchVersion = matchVersion;
}
/**
* Creates a new {@link SimpleAnalyzer}
* @deprecated use {@link #SimpleAnalyzer(Version)} instead
*/
@Deprecated public SimpleAnalyzer() {
this(Version.LUCENE_30);
}
@Override
protected TokenStreamComponents createComponents(final String fieldName,
final Reader reader) {
return new TokenStreamComponents(new LowerCaseTokenizer(matchVersion, reader));
}
}