# Package org.apache.lucene.queryparser.flexible.standard

Lucene Flexible Query Parser Implementation

The old Lucene query parser used to have only one class that performed all the parsing operations. In the new query parser structure, the parsing was divided in 3 steps: parsing (syntax), processing (semantic) and building.

The classes contained in the package org.apache.lucene.queryParser.standard are used to reproduce the same behavior as the old query parser.

Check `StandardQueryParser` to quick start using the Lucene query parser.

- Interface Summary
  Interface | Description
  --- | ---
  CommonQueryParserConfiguration | Configuration options common across queryparser implementations.

- Class Summary
  Class | Description
  --- | ---
  QueryParserUtil | This class defines utility methods to (help) parse query strings into `Query` objects.
  StandardQueryParser | The `StandardQueryParser` is a pre-assembled query parser that supports most features of the classic Lucene query parser, allows dynamic configuration of some of its features (like multi-field expansion or wildcard query restrictions) and adds support for new query types and expressions.