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Lucene example source code file (FuzzyAttributeImpl.java)

This example Lucene source code file (FuzzyAttributeImpl.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

attributeimpl, fuzzyattribute, fuzzyattribute, fuzzyattributeimpl, fuzzyattributeimpl, override, override, string, unsupportedoperationexception, unsupportedoperationexception

The Lucene FuzzyAttributeImpl.java source code

package org.apache.lucene.queryParser.standard.config;

 * 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 org.apache.lucene.queryParser.core.config.QueryConfigHandler;
import org.apache.lucene.queryParser.standard.processors.PhraseSlopQueryNodeProcessor;
import org.apache.lucene.search.FuzzyQuery;
import org.apache.lucene.util.AttributeImpl;

 * This attribute is used by {@link PhraseSlopQueryNodeProcessor} processor and
 * must be defined in the {@link QueryConfigHandler}. This attribute tells the
 * processor what is the default phrase slop when no slop is defined in a
 * phrase. <br/>
 * @see org.apache.lucene.queryParser.standard.config.FuzzyAttribute
public class FuzzyAttributeImpl extends AttributeImpl 
				implements FuzzyAttribute {

  private static final long serialVersionUID = -2104763012527049527L;

  { enableBackwards = false; }
  private int prefixLength = FuzzyQuery.defaultPrefixLength;

  private float minSimilarity = FuzzyQuery.defaultMinSimilarity;

  public FuzzyAttributeImpl() {
    // empty constructor

  public void setPrefixLength(int prefixLength) {
    this.prefixLength = prefixLength;

  public int getPrefixLength() {
    return this.prefixLength;

  public void setFuzzyMinSimilarity(float minSimilarity) {
    this.minSimilarity = minSimilarity;

  public float getFuzzyMinSimilarity() {
    return this.minSimilarity;

  public void clear() {
    throw new UnsupportedOperationException();

  public void copyTo(AttributeImpl target) {
    throw new UnsupportedOperationException();

  public boolean equals(Object other) {

    if (other instanceof FuzzyAttributeImpl
        && ((FuzzyAttributeImpl) other).prefixLength == this.prefixLength) {

      return true;


    return false;


  public int hashCode() {
    return Integer.valueOf(this.prefixLength).hashCode();

  public String toString() {
    return "<fuzzyAttribute prefixLength=" + this.prefixLength + ",minSimilarity=" + this.minSimilarity + "/>";


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