RandomScoreFunction (server 6.7.2 API)

java.lang.Object
- org.elasticsearch.common.lucene.search.function.ScoreFunction
- - org.elasticsearch.common.lucene.search.function.RandomScoreFunction

```
public class RandomScoreFunction
extends ScoreFunction
```
Pseudo randomly generate a score for each LeafScoreFunction.score(int, float).

Constructor Summary

Constructors
Constructor Description

RandomScoreFunction(int seed, int salt, IndexFieldData<?> uidFieldData)
Creates a RandomScoreFunction.

Method Summary

Modifier and Type	Method	Description
`protected boolean`	`doEquals(ScoreFunction other)`	Indicates whether some other `ScoreFunction` object of the same type is "equal to" this one.
`protected int`	`doHashCode()`
`LeafScoreFunction`	`getLeafScoreFunction(org.apache.lucene.index.LeafReaderContext ctx)`
`boolean`	`needsScores()`	Indicates if document scores are needed by this function.

Methods inherited from class org.elasticsearch.common.lucene.search.function.ScoreFunction
equals, getDefaultScoreCombiner, getWeight, hashCode, rewrite

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RandomScoreFunction
```
public RandomScoreFunction(int seed,
                           int salt,
                           IndexFieldData<?> uidFieldData)
```
    Creates a RandomScoreFunction.
    
    Parameters:
    
    seed - A seed for randomness
    
    salt - A value to salt the seed with, ideally unique to the running node/index
    
    uidFieldData - The field data for _uid to use for generating consistent random values for the same id
- Method Detail
  - getLeafScoreFunction
```
public LeafScoreFunction getLeafScoreFunction(org.apache.lucene.index.LeafReaderContext ctx)
```
    Specified by:
    
    getLeafScoreFunction in class ScoreFunction
  - needsScores
```
public boolean needsScores()
```
    Description copied from class: ScoreFunction
    
    Indicates if document scores are needed by this function.
    
    Specified by:
    
    needsScores in class ScoreFunction
    
    Returns:
    
    true if scores are needed.
  - doEquals
```
protected boolean doEquals(ScoreFunction other)
```
    Description copied from class: ScoreFunction
    
    Indicates whether some other ScoreFunction object of the same type is "equal to" this one.
    
    Specified by:
    
    doEquals in class ScoreFunction
  - doHashCode
```
protected int doHashCode()
```
    Specified by:
    
    doHashCode in class ScoreFunction