# Uses of Class
org.apache.lucene.queryparser.classic.QueryParser

Packages that use QueryParser
Package
Description
org.apache.lucene.queryparser.classic
A simple query parser implemented with JavaCC.
org.apache.lucene.queryparser.complexPhrase
QueryParser which permits complex phrase query syntax eg "(john jon jonathan~) peters*"
org.apache.lucene.queryparser.ext
Extendable QueryParser provides a simple and flexible extension mechanism by overloading query field names.
org.apache.lucene.queryparser.xml
Parser that produces Lucene Query objects from XML streams.
org.apache.lucene.queryparser.xml.builders
XML Parser factories for different Lucene Query/Filters.

## Uses of QueryParser in org.apache.lucene.queryparser.classic

Subclasses of QueryParser in org.apache.lucene.queryparser.classic
Modifier and Type
Class
Description
`class`
`MultiFieldQueryParser`
A QueryParser which constructs queries to search multiple fields.

## Uses of QueryParser in org.apache.lucene.queryparser.complexPhrase

Subclasses of QueryParser in org.apache.lucene.queryparser.complexPhrase
Modifier and Type
Class
Description
`class`
`ComplexPhraseQueryParser`
QueryParser which permits complex phrase query syntax eg "(john jon jonathan~) peters*".

## Uses of QueryParser in org.apache.lucene.queryparser.ext

Subclasses of QueryParser in org.apache.lucene.queryparser.ext
Modifier and Type
Class
Description
`class`
`ExtendableQueryParser`
The `ExtendableQueryParser` enables arbitrary query parser extension based on a customizable field naming scheme.
Methods in org.apache.lucene.queryparser.ext that return QueryParser
Modifier and Type
Method
Description
`QueryParser`
ExtensionQuery.`topLevelParser()`
Returns the value of the `topLevelParser` record component.
Constructors in org.apache.lucene.queryparser.ext with parameters of type QueryParser
Modifier
Constructor
Description
``
`ExtensionQuery(QueryParser topLevelParser, String field, String rawQueryString)`
Creates an instance of a `ExtensionQuery` record class.

## Uses of QueryParser in org.apache.lucene.queryparser.xml

Fields in org.apache.lucene.queryparser.xml declared as QueryParser
Modifier and Type
Field
Description
`protected QueryParser`
CoreParser.`parser`
Constructors in org.apache.lucene.queryparser.xml with parameters of type QueryParser
Modifier
Constructor
Description
`protected`
`CoreParser(String defaultField, Analyzer analyzer, QueryParser parser)`
``
`CoreParser(Analyzer analyzer, QueryParser parser)`
Construct an XML parser that uses a single instance QueryParser for handling UserQuery tags - all parse operations are synchronised on this parser
``
`CorePlusExtensionsParser(Analyzer analyzer, QueryParser parser)`
Construct an XML parser that uses a single instance QueryParser for handling UserQuery tags - all parse operations are synchronized on this parser
`protected`
`CorePlusQueriesParser(String defaultField, Analyzer analyzer, QueryParser parser)`
``
`CorePlusQueriesParser(Analyzer analyzer, QueryParser parser)`
Construct an XML parser that uses a single instance QueryParser for handling UserQuery tags - all parse operations are synchronized on this parser

## Uses of QueryParser in org.apache.lucene.queryparser.xml.builders

Methods in org.apache.lucene.queryparser.xml.builders that return QueryParser
Modifier and Type
Method
Description
`protected QueryParser`
UserInputQueryBuilder.`createQueryParser(String fieldName, Analyzer analyzer)`
Method to create a QueryParser - designed to be overridden
Constructors in org.apache.lucene.queryparser.xml.builders with parameters of type QueryParser
Modifier
Constructor
Description
``
`UserInputQueryBuilder(QueryParser parser)`
This constructor has the disadvantage of not being able to change choice of default field name