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Lucene example source code file (FieldBoostMapFCListener.java)

This example Lucene source code file (FieldBoostMapFCListener.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

boostattribute, fieldboostmapattribute, fieldboostmapattribute, fieldboostmapfclistener, fieldboostmapfclistener, fieldconfiglistener, fieldconfiglistener, float, float, queryconfighandler

The Lucene FieldBoostMapFCListener.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.FieldConfig;
import org.apache.lucene.queryParser.core.config.FieldConfigListener;
import org.apache.lucene.queryParser.core.config.QueryConfigHandler;

 * This listener listens for every field configuration request and assign a
 * {@link BoostAttribute} to the equivalent {@link FieldConfig} based on a
 * defined map: fieldName -> boostValue store in {@link FieldBoostMapAttribute}
 * in the {@link FieldBoostMapAttribute}.
 * @see BoostAttribute
 * @see FieldBoostMapAttribute
 * @see FieldConfig
 * @see FieldConfigListener
public class FieldBoostMapFCListener implements FieldConfigListener {

  private static final long serialVersionUID = -5929802948798314067L;

  private QueryConfigHandler config = null;
  public FieldBoostMapFCListener(QueryConfigHandler config) {
    this.config = config;

  public void buildFieldConfig(FieldConfig fieldConfig) {    
    if (this.config.hasAttribute(FieldBoostMapAttribute.class)) {
      FieldBoostMapAttribute fieldBoostMapAttr = this.config.getAttribute(FieldBoostMapAttribute.class);
      BoostAttribute boostAttr = fieldConfig.addAttribute(BoostAttribute.class);
      Float boost = fieldBoostMapAttr.getFieldBoostMap().get(fieldConfig.getField());

      if (boost != null) {



Other Lucene examples (source code examples)

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