FieldCacheSource (Lucene 9.6.0 queries API)

java.lang.Object
- org.apache.lucene.queries.function.ValueSource
- - org.apache.lucene.queries.function.valuesource.FieldCacheSource

Direct Known Subclasses:

BytesRefFieldSource, DoubleFieldSource, EnumFieldSource, FloatFieldSource, IntFieldSource, JoinDocFreqValueSource, LongFieldSource, SortedSetFieldSource
```
public abstract class FieldCacheSource
extends ValueSource
```
A base class for ValueSource implementations that retrieve values for a single field from DocValues.

Field Summary

Fields
Modifier and Type Field Description

protected String field

Constructor Summary

Constructors
Constructor Description

FieldCacheSource(String field)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`description()`	description of field, used in explain()
`boolean`	`equals(Object o)`
`String`	`getField()`
`int`	`hashCode()`

Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, createWeight, fromDoubleValuesSource, getSortField, getValues, newContext, toString

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

- Field Detail
  - field
```
protected final String field
```
- Constructor Detail
  - FieldCacheSource
```
public FieldCacheSource(String field)
```
- Method Detail
  - getField
```
public String getField()
```
  - description
```
public String description()
```
    Description copied from class: ValueSource
    
    description of field, used in explain()
    
    Specified by:
    
    description in class ValueSource
  - equals
```
public boolean equals(Object o)
```
    Specified by:
    
    equals in class ValueSource
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in class ValueSource