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

java.lang.Object
  com.google.appengine.api.search.query.QueryTreeBuilder

public class QueryTreeBuilder
extends java.lang.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

QueryTreeBuilder()

QueryTreeBuilder(QueryParserFactory parserFactory)

Method Summary

CommonTree

parse(java.lang.String query) Parses the user query and returns a CommonTree.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryTreeBuilder

public QueryTreeBuilder()

QueryTreeBuilder

public QueryTreeBuilder(QueryParserFactory parserFactory)

Method Detail

parse

public CommonTree parse(java.lang.String query)
                 throws RecognitionException

Parses the user query and returns a CommonTree.

Parameters:

query - the user query to be parsed

Returns:

a CommonTree constructed from the query

Throws:

RecognitionException - if the user query is invalid

java.lang.NullPointerException - if query is null