content: package org.apache.lucene.search;
  
  import org.apache.lucene.index.FieldInvertState;
  
  /**
   * 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,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /** Expert: Delegating scoring implementation.  Useful in {@link
   * Query#getSimilarity(Searcher)} implementations, to override only certain
   * methods of a Searcher's Similarity implementation..
   * @deprecated this class will be removed in 4.0.  Please
   * subclass {@link Similarity} or {@link DefaultSimilarity} instead. */
  @Deprecated
  public class SimilarityDelegator extends Similarity {
  
    private Similarity delegee;
  
    /** Construct a {@link Similarity} that delegates all methods to another.
     *
     * @param delegee the Similarity implementation to delegate to
     */
    public SimilarityDelegator(Similarity delegee) {
      this.delegee = delegee;
    }
  
    @Override
    public float computeNorm(String fieldName, FieldInvertState state) {
      return delegee.computeNorm(fieldName, state);
    }
  
    @Override
    public float queryNorm(float sumOfSquaredWeights) {
      return delegee.queryNorm(sumOfSquaredWeights);
    }
  
    @Override
    public float tf(float freq) {
      return delegee.tf(freq);
    }
      
    @Override
    public float sloppyFreq(int distance) {
      return delegee.sloppyFreq(distance);
    }
      
    @Override
    public float idf(int docFreq, int numDocs) {
      return delegee.idf(docFreq, numDocs);
    }
      
    @Override
    public float coord(int overlap, int maxOverlap) {
      return delegee.coord(overlap, maxOverlap);
    }
  
    @Override
    public float scorePayload(int docId, String fieldName, int start, int end, byte [] payload, int offset, int length) {
      return delegee.scorePayload(docId, fieldName, start, end, payload, offset, length);
    }
  }
  