JoinDocFreqValueSource (The Adobe Experience Manager SDK 2022.11.9850.20221116T162329Z-220900)

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

```
public class JoinDocFreqValueSource
extends FieldCacheSource
```
Use a field value and find the Document Frequency within another field.

Since:

solr 4.0

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String NAME

Constructor Summary

Constructors
Constructor Description

JoinDocFreqValueSource(java.lang.String field, java.lang.String qfield)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`description()`	description of field, used in explain()
`boolean`	`equals(java.lang.Object o)`
`FunctionValues`	`getValues(java.util.Map context, AtomicReaderContext readerContext)`	Gets the values for this reader and the context that was previously passed to createWeight()
`int`	`hashCode()`

Methods inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
getField, getFieldCache

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

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

- Field Detail
  - NAME
```
public static final java.lang.String NAME
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - JoinDocFreqValueSource
```
public JoinDocFreqValueSource(java.lang.String field,
                              java.lang.String qfield)
```
- Method Detail
  - description
```
public java.lang.String description()
```
    Description copied from class: ValueSource
    
    description of field, used in explain()
    
    Overrides:
    
    description in class FieldCacheSource
  - getValues
```
public FunctionValues getValues(java.util.Map context,
                                AtomicReaderContext readerContext)
                         throws java.io.IOException
```
    Description copied from class: ValueSource
    
    Gets the values for this reader and the context that was previously passed to createWeight()
    
    Specified by:
    
    getValues in class ValueSource
    
    Throws:
    
    java.io.IOException
  - equals
```
public boolean equals(java.lang.Object o)
```
    Overrides:
    
    equals in class FieldCacheSource
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class FieldCacheSource