See: Description
| Package | Description | 
|---|---|
| org.apache.lucene.expressions | Expressions. | 
| org.apache.lucene.expressions.js | Javascript expressions. | 
The expressions module is new to Lucene 4.6. It provides an API for dynamically computing per-document values based on string expressions.
The module is organized in two sections:
org.apache.lucene.expressions - The abstractions and simple utilities for common operations like sorting on an expressionorg.apache.lucene.expressions.js - A compiler for a subset of JavaScript expressions
    For sample code showing how to use the API, see Expression.
  
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