| Package | Description | 
|---|---|
| org.apache.lucene.queries.function.valuesource | A variety of functions to use with FunctionQuery. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BytesRefFieldSourceAn implementation for retrieving  FunctionValuesinstances for string based fields. | 
| class  | DoubleFieldSourceObtains double field values from  LeafReader.getNumericDocValues(java.lang.String)and makes
 those values available as other numeric types, casting as needed. | 
| class  | EnumFieldSourceObtains int field values from  LeafReader.getNumericDocValues(java.lang.String)and makes
 those values available as other numeric types, casting as needed. | 
| class  | FloatFieldSourceObtains float field values from  LeafReader.getNumericDocValues(java.lang.String)and makes those
 values available as other numeric types, casting as needed. | 
| class  | IntFieldSourceObtains int field values from  LeafReader.getNumericDocValues(java.lang.String)and makes those
 values available as other numeric types, casting as needed. | 
| class  | JoinDocFreqValueSourceUse a field value and find the Document Frequency within another field. | 
| class  | LongFieldSourceObtains long field values from  LeafReader.getNumericDocValues(java.lang.String)and makes those
 values available as other numeric types, casting as needed. | 
| class  | MultiValuedDoubleFieldSourceObtains double field values from  LeafReader.getSortedNumericDocValues(java.lang.String)and using aSortedNumericSelectorit gives a single-valued ValueSource view of a field. | 
| class  | MultiValuedFloatFieldSourceObtains float field values from  LeafReader.getSortedNumericDocValues(java.lang.String)and using aSortedNumericSelectorit gives a single-valued ValueSource view of a field. | 
| class  | MultiValuedIntFieldSourceObtains int field values from  LeafReader.getSortedNumericDocValues(java.lang.String)and using aSortedNumericSelectorit gives a single-valued ValueSource view of a field. | 
| class  | MultiValuedLongFieldSourceObtains long field values from  LeafReader.getSortedNumericDocValues(java.lang.String)and using aSortedNumericSelectorit gives a single-valued ValueSource view of a field. | 
| class  | SortedSetFieldSourceRetrieves  FunctionValuesinstances for multi-valued string based fields. | 
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