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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 java.util.Arrays;
   21   
   22   import org.apache.lucene.queryParser.core.config.QueryConfigHandler;
   23   import org.apache.lucene.queryParser.standard.processors.MultiFieldQueryNodeProcessor;
   24   import org.apache.lucene.util.AttributeImpl;
   25   
   26   /**
   27    * This attribute is used by {@link MultiFieldQueryNodeProcessor} processor and
   28    * must be defined in the {@link QueryConfigHandler}. This attribute tells the
   29    * processor to which fields the terms in the query should be expanded. <br/>
   30    * 
   31    * @see org.apache.lucene.queryParser.standard.config.MultiFieldAttribute
   32    */
   33   public class MultiFieldAttributeImpl extends AttributeImpl
   34   				implements MultiFieldAttribute {
   35   
   36     private static final long serialVersionUID = -6809760312720049526L;
   37   
   38     private CharSequence[] fields;
   39   
   40     public MultiFieldAttributeImpl() {
   41       // empty constructor
   42     }
   43   
   44     public void setFields(CharSequence[] fields) {
   45       this.fields = fields;
   46     }
   47   
   48     public CharSequence[] getFields() {
   49       return this.fields;
   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 MultiFieldAttributeImpl) {
   66       	MultiFieldAttributeImpl fieldsAttr = (MultiFieldAttributeImpl) other;
   67   
   68         return Arrays.equals(this.fields, fieldsAttr.fields);
   69   
   70       }
   71   
   72       return false;
   73   
   74     }
   75   
   76     @Override
   77     public int hashCode() {
   78       return Arrays.hashCode(this.fields);
   79     }
   80   
   81     @Override
   82     public String toString() {
   83       return "<fieldsAttribute fields=" + Arrays.toString(this.fields) + "/>";
   84     }
   85   
   86   }

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