4 Copyright (C) 1999 MDlink online service center GmbH and Helge Hess
6 Author: Helge Hess (helge.hess@mdlink.de)
8 This file is part of the FB Adaptor Library
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Library General Public
12 License as published by the Free Software Foundation; either
13 version 2 of the License, or (at your option) any later version.
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Library General Public License for more details.
20 You should have received a copy of the GNU Library General Public
21 License along with this library; see the file COPYING.LIB.
22 If not, write to the Free Software Foundation,
23 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 // $Id: FBChannel.h 1 2004-08-20 10:38:46Z znek $
27 #ifndef ___FB_Channel_H___
28 #define ___FB_Channel_H___
30 #import <GDLAccess/EOAdaptorChannel.h>
33 @class NSArray, NSString, NSMutableDictionary;
37 @interface FrontBaseChannel : EOAdaptorChannel
40 /* connection is valid after an openChannel call */
41 FBCDatabaseConnection *fbdc;
43 FBCRowHandler *rowHandler;
44 FBCMetaData *cmdMetaData;
48 /* these variables are valid only during an evaluation */
50 int numberOfColumns; // number of columns in result set
54 NSArray *selectedAttributes; // contains the real select order
56 /* turns on/off channel debugging */
57 BOOL isDebuggingEnabled;
61 NSMutableDictionary *_primaryKeysNamesForTableName;
62 NSMutableDictionary *_attributesForTableName;
65 - (void)setDebugEnabled:(BOOL)_flag;
66 - (BOOL)isDebugEnabled;
71 - (void)primaryCloseChannel; // private
73 - (NSMutableDictionary *)primaryFetchAttributes:(NSArray *)_attributes
74 withZone:(NSZone *)_zone;
76 - (BOOL)evaluateExpression:(NSString *)_expression;
78 // cancelFetch is always called to terminate a fetch
79 // (even by primaryFetchAttributes)
80 // it frees all fetch-local variables
83 // uses type information to create EOAttribute objects
84 - (NSArray *)describeResults;