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Lucene example source code file (Fragmenter.java)

This example Lucene source code file (Fragmenter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

fragmenter, fragmenter, tokenstream, tokenstream

The Lucene Fragmenter.java source code

package org.apache.lucene.search.highlight;
/**
 * 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 org.apache.lucene.analysis.TokenStream;

/**
 * Implements the policy for breaking text into multiple fragments for
 * consideration by the {@link Highlighter} class. A sophisticated
 * implementation may do this on the basis of detecting end of sentences in the
 * text.
 */
public interface Fragmenter {

  /**
   * Initializes the Fragmenter. You can grab references to the Attributes you are
   * interested in from tokenStream and then access the values in {@link #isNewFragment()}.
   * 
   * @param originalText the original source text
   * @param tokenStream the {@link TokenStream} to be fragmented
   */
  public void start(String originalText, TokenStream tokenStream);


  /**
   * Test to see if this token from the stream should be held in a new
   * TextFragment. Every time this is called, the TokenStream
   * passed to start(String, TokenStream) will have been incremented.
   * 
   */
  public boolean isNewFragment();
}

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