org.exolab.castor.jdo.oql
Class Lexer
java.lang.Objectorg.exolab.castor.jdo.oql.Lexer
- TokenTypes
public class Lexer
extends java.lang.Object
Seperates an input string of OQL into a stream of
Tokens.
$Revision: 1.1.1.1 $ $Date: 2003/03/03 07:08:22 $
ARROW, BOOLEAN_LITERAL, CHAR_LITERAL, COLON, COMMA, CONCAT, DATE_LITERAL, DIVIDE, DOLLAR, DOT, DOUBLE_LITERAL, END_OF_QUERY, EQUAL, GT, GTE, IDENTIFIER, KEYWORD_ABS, KEYWORD_AND, KEYWORD_AS, KEYWORD_ASC, KEYWORD_AVG, KEYWORD_BETWEEN, KEYWORD_BY, KEYWORD_COUNT, KEYWORD_DESC, KEYWORD_DISTINCT, KEYWORD_FROM, KEYWORD_IN, KEYWORD_IS_DEFINED, KEYWORD_IS_UNDEFINED, KEYWORD_LIKE, KEYWORD_LIMIT, KEYWORD_LIST, KEYWORD_MAX, KEYWORD_MIN, KEYWORD_MOD, KEYWORD_NIL, KEYWORD_NOT, KEYWORD_OR, KEYWORD_ORDER, KEYWORD_SELECT, KEYWORD_SUM, KEYWORD_UNDEFINED, KEYWORD_WHERE, LONG_LITERAL, LPAREN, LT, LTE, MINUS, NOT_EQUAL, PLUS, RPAREN, STRING_LITERAL, TIMES, TIMESTAMP_LITERAL, TIME_LITERAL |
Lexer(String oqlQueryString)- Creates a lexer which will seperate a string query into a series of
tokens.
|
_pos
(package private) int _pos
_queryString
(package private) String _queryString
endOfQueryPassed
(package private) boolean endOfQueryPassed
keywords
(package private) Hashtable keywords
Lexer
public Lexer(String oqlQueryString)
Creates a lexer which will seperate a string query into a series of
tokens.
oqlQueryString - The string representation of the OQL Query
hasMoreTokens
public boolean hasMoreTokens()
Checks whether the query strin has been fully consumed.
- True if there is text in the query which hasn't been tokenized,
otherwise false.
Intalio Inc. (C) 1999-2003. All rights reserved http://www.intalio.com