org.terrier.querying.parser

Class QueryParser

java.lang.Object

org.terrier.querying.parser.QueryParser

public class QueryParser
extends Object

Useful class to parse the query. (We should have had this class years ago). This class replaces all replicated code about how to parse a String query into a Query tree, and add it to a pre-existing search request. This is most often called from Manager.newSearchRequest(String,String), although client code can use this method when other forms of Manager.newSearchRequest() are used. Note that this class throws QueryParserException when it gets upset.

Since:

2.0

Author:

Craig Macdonald

Constructor Summary

Constructors

Constructor and Description
QueryParser()

Method Summary

Methods

Modifier and Type	Method and Description
static Query	parseQuery(String query) Parse the specified query.
static void	parseQuery(String query, SearchRequest srq) Parse the query specified in String query, and use it for the specified search request.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QueryParser

public QueryParser()

Method Detail

parseQuery

public static void parseQuery(String query,
              SearchRequest srq)
                       throws QueryParserException

Parse the query specified in String query, and use it for the specified search request. Under normal usage, called by newSearchRequest(String,String).

Parameters:

query - The string query to parse

srq - The request object that the manager can use

Throws:

QueryParserException - when the query cannot be parsed

Since:

2.0

parseQuery

public static Query parseQuery(String query)
                        throws QueryParserException

Parse the specified query.

Parameters:

query - The string query to parse

Throws:

QueryParserException - when the query cannot be parsed

Since:

2.0