# Package org.apache.solr.search.function

Solr implementations of `ValueSource` for function queries.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  SolrComparisonBoolFunction.Compare |

- Class Summary
  Class | Description
  --- | ---
  CollapseScoreFunction |
  FileFloatSource | Obtains float field values from an external file.
  FileFloatSource.ReloadCacheRequestHandler |
  OrdFieldSource | Obtains the ordinal of the field value from `LeafReader.getSortedDocValues(java.lang.String)`.
  ReverseOrdFieldSource | Obtains the ordinal of the field value from `LeafReader.getSortedDocValues(java.lang.String)` and reverses the order.
  SolrComparisonBoolFunction | Refines `ComparisonBoolFunction` to compare based on a 'long' or 'double' depending on if the any of the FunctionValues are `LongDocValues`.
  ValueSourceRangeFilter | RangeFilter over a ValueSource.

## Package org.apache.solr.search.function Description

Solr implementations of `ValueSource` for function queries.

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