source: trunk/gsdl/src/mgpp/text/GSDLQueryParser.h@ 11115

Last change on this file since 11115 was 4209, checked in by kjdon, 21 years ago

parseQuery (in GSDLQueryParser) now returns NULL if there has been a syntax error. So all the auxiliary functions either return NULl if there is an error, or set an error flag to true. Queryer now tells the user that there has been invalid syntax rather than seg faulting

  • Property svn:executable set to *
  • Property svn:keywords set to Author Date Id Revision
File size: 1.5 KB
Line 
1/**************************************************************************
2 *
3 * QueryParser.h -- Query parser for a simple query language
4 * Copyright (C) 2000 Rodger McNab
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 **************************************************************************/
21
22#ifndef GSDLQUERYPARSER_H
23#define GSDLQUERYPARSER_H
24
25#include "UCArray.h"
26#include "MGQuery.h"
27
28#define NEAR_DEFAULT 20
29
30// returns NULL if the query could not be parsed
31// defaultBoolCOmbine determines if individual terms are combined using
32// AND or OR in the absence of specified operators.
33// defaultStemMethod used to set stemming and casefolding for terms where
34// its not set explicitly in the query string. THe defaultStemMethod value
35// should be set using the values from the preferences page
36QueryNode *ParseQuery (const UCArray &queryStr, int defaultBoolCombine,
37 int defaultStemMethod);
38
39#endif
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