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Lucene example source code file (SingleTermEnum.java)

This example Lucene source code file (SingleTermEnum.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

filteredtermenum, filteredtermenum, io, ioexception, override, override, singletermenum, singletermenum, term, term

The Lucene SingleTermEnum.java source code

package org.apache.lucene.search;

 * 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;

import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;

 * Subclass of FilteredTermEnum for enumerating a single term.
 * <p>
 * This can be used by {@link MultiTermQuery}s that need only visit one term,
 * but want to preserve MultiTermQuery semantics such as
 * {@link MultiTermQuery#rewriteMethod}.
public class SingleTermEnum extends FilteredTermEnum {
  private Term singleTerm;
  private boolean endEnum = false;
   * Creates a new <code>SingleTermEnum.
   * <p>
   * After calling the constructor the enumeration is already pointing to the term,
   * if it exists.
  public SingleTermEnum(IndexReader reader, Term singleTerm) throws IOException {
    this.singleTerm = singleTerm;

  public float difference() {
    return 1.0F;

  protected boolean endEnum() {
    return endEnum;

  protected boolean termCompare(Term term) {
    if (term.equals(singleTerm)) {
      return true;
    } else {
      endEnum = true;
      return false;

Other Lucene examples (source code examples)

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

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