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Lucene example source code file (LimitTokenCountFilter.java)

This example Lucene source code file (LimitTokenCountFilter.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

io, ioexception, ioexception, limittokencountfilter, limittokencountfilter, override, override, tokenfilter, tokenfilter

The Lucene LimitTokenCountFilter.java source code

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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

import java.io.IOException;

 * This TokenFilter limits the number of tokens while indexing. It is
 * a replacement for the maximum field length setting inside {@link org.apache.lucene.index.IndexWriter}.
public final class LimitTokenCountFilter extends TokenFilter {

  private final int maxTokenCount;
  private int tokenCount = 0;

   * Build a filter that only accepts tokens up to a maximum number.
  public LimitTokenCountFilter(TokenStream in, int maxTokenCount) {
    this.maxTokenCount = maxTokenCount;
  public boolean incrementToken() throws IOException {
    if (tokenCount < maxTokenCount && input.incrementToken()) {
      return true;
    return false;

  public void reset() throws IOException {
    tokenCount = 0;

Other Lucene examples (source code examples)

Here is a short list of links related to this Lucene LimitTokenCountFilter.java source code file:

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