1/*
2  Copyright (C) 2000-2005 SKYRIX Software AG
3
4  This file is part of SOPE.
5
6  SOPE is free software; you can redistribute it and/or modify it under
7  the terms of the GNU Lesser General Public License as published by the
8  Free Software Foundation; either version 2, or (at your option) any
9  later version.
10
11  SOPE is distributed in the hope that it will be useful, but WITHOUT ANY
12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
14  License for more details.
15
16  You should have received a copy of the GNU Lesser General Public
17  License along with SOPE; see the file COPYING.  If not, write to the
18  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
19  02111-1307, USA.
20*/
21
22#include <EOControl/EODataSource.h>
23#include <EOControl/EOClassDescription.h>
24#include "common.h"
25
26@implementation EODataSource
27
28/* reflection */
29
30- (EOClassDescription *)classDescriptionForObjects {
31  return nil;
32}
33
34/* master-detail */
35
36- (EODataSource *)dataSourceQualifiedByKey:(NSString *)_relKey {
37  [NSException raise:@"NSInvalidArgumentException"
38               format:@"datasource %@ can't return a ds qualified by key '%@'",
39                 self, _relKey];
40  return nil;
41}
42
43- (void)qualifyWithRelationshipKey:(NSString *)_relKey ofObject:(id)_object {
44  [NSException raise:@"NSInvalidArgumentException"
45               format:@"datasource %@ can't qualify by key '%@' of object %@",
46                 self, _relKey, _object];
47}
48
49/* operations */
50
51- (NSArray *)fetchObjects {
52  return nil;
53}
54- (NSEnumerator *)fetchEnumerator {
55  return [[self fetchObjects] objectEnumerator];
56}
57
58- (void)deleteObject:(id)_object {
59  [NSException raise:@"NSInvalidArgumentException"
60               format:@"datasource %@ can't delete object %@",
61                 self, _object];
62}
63
64- (void)insertObject:(id)_object {
65  [NSException raise:@"NSInvalidArgumentException"
66               format:@"datasource %@ can't insert object %@",
67                 self, _object];
68}
69
70- (id)createObject {
71  EOClassDescription *cd;
72
73  if ((cd = [self classDescriptionForObjects]) == nil)
74    return nil;
75
76  return [cd createInstanceWithEditingContext:nil globalID:nil zone:NULL];
77}
78
79@end /* EODataSource */
80