Package com.google.appengine.api.search.query

Class QueryTreeBuilder

java.lang.Object

com.google.appengine.api.search.query.QueryTreeBuilder

public class QueryTreeBuilder
extends Object

A generator of AST representation of a query. This class uses the given factory to produce a query parser which parses user specified query. If successful it returns the root of an AST representing the parsed query.

Constructor Summary

Constructors

Constructor	Description
QueryTreeBuilder()
QueryTreeBuilder(QueryParserFactory parserFactory)

Method Summary

Modifier and Type	Method	Description
org.antlr.runtime.tree.CommonTree	parse(String query)	Parses the user query and returns its AST.

Methods inherited from class java.lang.Object

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

Constructor Details

QueryTreeBuilder

public QueryTreeBuilder()

QueryTreeBuilder

public QueryTreeBuilder(QueryParserFactory parserFactory)

Method Details

parse

public org.antlr.runtime.tree.CommonTree parse(String query)
                                        throws org.antlr.runtime.RecognitionException

Parses the user query and returns its AST.

Parameters:

query - the user query to be parsed

Returns:

a CommonTree constructed from the query

Throws:

org.antlr.runtime.RecognitionException - if the user query is invalid

NullPointerException - if query is null