## 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 and 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 and 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 and 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 and Description
    --- | ---
    `QueryParser` | ExtensionQuery.`getTopLevelParser()` Returns the top level parser which created this `ExtensionQuery`

    Constructors in org.apache.lucene.queryparser.ext with parameters of type QueryParser
    Constructor and Description
    `ExtensionQuery(QueryParser topLevelParser, String field, String rawQueryString)` Creates a new `ExtensionQuery`

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

    Fields in org.apache.lucene.queryparser.xml declared as QueryParser
    Modifier and Type | Field and Description
    --- | ---
    `protected QueryParser` | CoreParser.`parser`

    Constructors in org.apache.lucene.queryparser.xml with parameters of type QueryParser
    Constructor and Description
    `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
    `CoreParser(String defaultField, Analyzer analyzer, QueryParser 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
    `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
    `CorePlusQueriesParser(String defaultField, Analyzer analyzer, QueryParser 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 and 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
    Constructor and Description
    `UserInputQueryBuilder(QueryParser parser)` This constructor has the disadvantage of not being able to change choice of default field name

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