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    1   package org.apache.lucene.queryParser.standard.config;
    2   
    3   /**
    4    * Licensed to the Apache Software Foundation (ASF) under one or more
    5    * contributor license agreements.  See the NOTICE file distributed with
    6    * this work for additional information regarding copyright ownership.
    7    * The ASF licenses this file to You under the Apache License, Version 2.0
    8    * (the "License"); you may not use this file except in compliance with
    9    * the License.  You may obtain a copy of the License at
   10    *
   11    *     http://www.apache.org/licenses/LICENSE-2.0
   12    *
   13    * Unless required by applicable law or agreed to in writing, software
   14    * distributed under the License is distributed on an "AS IS" BASIS,
   15    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   16    * See the License for the specific language governing permissions and
   17    * limitations under the License.
   18    */
   19   
   20   import org.apache.lucene.queryParser.core.config.FieldConfig;
   21   import org.apache.lucene.queryParser.standard.processors.MultiFieldQueryNodeProcessor;
   22   import org.apache.lucene.util.AttributeImpl;
   23   
   24   /**
   25    * This attribute is used by {@link MultiFieldQueryNodeProcessor} processor and
   26    * it should be defined in a {@link FieldConfig}. This processor uses this
   27    * attribute to define which boost a specific field should have when none is
   28    * defined to it. <br/>
   29    * <br/>
   30    * 
   31    * @see org.apache.lucene.queryParser.standard.config.BoostAttribute
   32    */
   33   public class BoostAttributeImpl extends AttributeImpl 
   34   				implements BoostAttribute {
   35   
   36     private static final long serialVersionUID = -2104763012523049527L;
   37   
   38     private float boost = 1.0f;
   39   
   40     public BoostAttributeImpl() {
   41       // empty constructor
   42     }
   43   
   44     public void setBoost(float boost) {
   45       this.boost = boost;
   46     }
   47   
   48     public float getBoost() {
   49       return this.boost;
   50     }
   51   
   52     @Override
   53     public void clear() {
   54       throw new UnsupportedOperationException();
   55     }
   56   
   57     @Override
   58     public void copyTo(AttributeImpl target) {
   59       throw new UnsupportedOperationException();
   60     }
   61   
   62     @Override
   63     public boolean equals(Object other) {
   64   
   65       if (other instanceof BoostAttributeImpl && other != null
   66           && ((BoostAttributeImpl) other).boost == this.boost) {
   67   
   68         return true;
   69   
   70       }
   71   
   72       return false;
   73   
   74     }
   75   
   76     @Override
   77     public int hashCode() {
   78       return Float.valueOf(this.boost).hashCode();
   79     }
   80   
   81     @Override
   82     public String toString() {
   83       return "<boostAttribute boost=" + this.boost + "/>";
   84     }
   85   
   86   }

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