1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/**
EOJoin.m <title>EOJoin Class</title>
Copyright (C) 2000-2002,2003,2004,2005 Free Software Foundation, Inc.
Author: Mirko Viviani <mirko.viviani@gmail.com>
Date: February 2000
$Revision$
$Date$
<abstract></abstract>
This file is part of the GNUstep Database Library.
<license>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
</license>
**/
#include "config.h"
#ifdef GNUSTEP
#include <Foundation/NSString.h>
#include <Foundation/NSDebug.h>
#else
#include <Foundation/Foundation.h>
#endif
#ifndef GNUSTEP
#include <GNUstepBase/GNUstep.h>
#include <GNUstepBase/GSObjCRuntime.h>
#include <GNUstepBase/NSDebug+GNUstepBase.h>
#endif
#include <EOControl/EODebug.h>
#include <EOAccess/EOModel.h>
#include <EOAccess/EOEntity.h>
#include <EOAccess/EOAttribute.h>
#include <EOAccess/EORelationship.h>
#include <EOAccess/EOJoin.h>
@implementation EOJoin
+ (EOJoin *) joinWithSourceAttribute: (EOAttribute *)source
destinationAttribute: (EOAttribute *)destination
{
return [[[self alloc] initWithSourceAttribute: source
destinationAttribute: destination] autorelease];
}
- (id) initWithSourceAttribute: (EOAttribute *)source
destinationAttribute: (EOAttribute *)destination
{
if ((self = [super init]))
{
NSAssert((source && destination),
@"Source and destination attributes cannot be nil");
ASSIGN(_sourceAttribute, source);
ASSIGN(_destinationAttribute, destination);
}
return self;
}
- (void)dealloc
{
DESTROY(_sourceAttribute);
DESTROY(_destinationAttribute);
[super dealloc];
}
- (NSUInteger)hash
{
return [_sourceAttribute hash];
}
- (NSString *)description
{
NSString *dscr = nil;
/*NSString *joinOperatorDescr = nil;
NSString *joinSemanticDescr = nil;
switch(joinOperator)
{
case EOJoinEqualTo:
joinOperatorDescr=@"EOJoinEqualTo";
break;
case EOJoinNotEqualTo:
joinOperatorDescr=@"EOJoinNotEqualTo";
break;
case EOJoinGreaterThan:
joinOperatorDescr=@"EOJoinGreaterThan";
break;
case EOJoinGreaterThanOrEqualTo:
joinOperatorDescr=@"EOJoinGreaterThanOrEqualTo";
break;
case EOJoinLessThan:
joinOperatorDescr=@"EOJoinLessThan";
break;
case EOJoinLessThanOrEqualTo:
joinOperatorDescr=@"EOJoinLessThanOrEqualTo";
break;
};
switch(joinSemantic)
{
case EOInnerJoin:
joinSemanticDescr=@"EOInnerJoin";
break;
case EOFullOuterJoin:
joinSemanticDescr=@"EOFullOuterJoin";
break;
case EOLeftOuterJoin:
joinSemanticDescr=@"EOLeftOuterJoin";
break;
case EORightOuterJoin:
joinSemanticDescr=@"EORightOuterJoin";
break;
};
*/
dscr = [NSString stringWithFormat: @"<%s %p -",
object_getClassName(self),
(void*)self];
dscr = [dscr stringByAppendingFormat: @" sourceAttribute=%@",
[_sourceAttribute name]];
dscr = [dscr stringByAppendingFormat: @" destinationAttribute=%@",
[_destinationAttribute name]];
/* dscr=[dscr stringByAppendingFormat:@" relationship name=%@",
[relationship name]];
dscr=[dscr stringByAppendingFormat:@" joinOperator=%@ joinSemantic=%@>",
joinOperatorDescr,
joinSemanticDescr];*/
return dscr;
}
- (EOAttribute *)destinationAttribute
{
return _destinationAttribute;
}
- (EOAttribute *)sourceAttribute
{
return _sourceAttribute;
}
- (BOOL)isReciprocalToJoin: (EOJoin *)otherJoin
{
//OK
NSDebugMLLog(@"gsdb", @"_sourceAttribute name=%@",
[_sourceAttribute name]);
NSDebugMLLog(@"gsdb", @"[[otherJoin destinationAttribute] name]=%@",
[[otherJoin destinationAttribute] name]);
NSDebugMLLog(@"gsdb", @"_destinationAttribute name=%@",
[_destinationAttribute name]);
NSDebugMLLog(@"gsdb", @"[[otherJoin sourceAttribute] name]=%@",
[[otherJoin sourceAttribute] name]);
if ([[_sourceAttribute name]
isEqual: [[otherJoin destinationAttribute] name]]
&& [[_destinationAttribute name]
isEqual: [[otherJoin sourceAttribute] name]])
return YES;
else
return NO;
}
@end
|
