https://lucene.apache.org/lucene-parent/lucene-queries: Lucene Queries Module (The Apache Software Foundation) 
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 * 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
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package org.apache.lucene.queries.payloads;

import org.apache.lucene.util.BytesRef;


Defines a way of converting payloads to float values, for use by PayloadScoreQuery 
/**
 * Defines a way of converting payloads to float values, for use by {@link PayloadScoreQuery}
 */
public interface PayloadDecoder {

  
Compute a float value for the given payload

/**
   * Compute a float value for the given payload
   */
  float computePayloadFactor(BytesRef payload);

  
A PayloadDecoder that interprets the bytes of a payload as a float 
/**
   * A {@link PayloadDecoder} that interprets the bytes of a payload as a float
   */
  PayloadDecoder FLOAT_DECODER = bytes -> bytes == null ? 1 : bytes.bytes[bytes.offset];

}