photark-search/src/main/java/org/apache/photark/search/services/impl/TagAnalyzer.java

/*
 * 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.    
 */
package org.apache.photark.search.services.impl;

import java.io.IOException;
import java.io.Reader;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;

/**
 * @version $Rev$ $Date$
 */
public class TagAnalyzer extends Analyzer {

    public TokenStream tokenStream(String fieldName, Reader reader) {
        return new TagTokenizer(reader);
    }

    public TokenStream reusableTokenStream(String fieldName, Reader reader) throws IOException {
        Tokenizer tokenizer = (Tokenizer)getPreviousTokenStream();
        if (tokenizer == null) {
            tokenizer = new TagTokenizer(reader);
            setPreviousTokenStream(tokenizer);
        } else
            tokenizer.reset(reader);
        return tokenizer;
    }

}