1/*
2  Copyright (C) 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 "EOQualifier+CoreData.h"
23#include "NSPredicate+EO.h"
24#include "NSExpression+EO.h"
25#include "common.h"
26
27@implementation EOKeyComparisonQualifier(CoreData)
28
29+ (EOQualifier *)qualifierForComparisonPredicate:(NSComparisonPredicate *)_p {
30  SEL sel;
31
32  if ((sel = [self eoSelectorForForComparisonPredicate:_p]) == nil)
33    return (EOQualifier *)_p;
34
35  return [[[self alloc] initWithLeftKey:[[_p leftExpression] keyPath]
36			operatorSelector:sel
37			rightKey:[[_p rightExpression] keyPath]] autorelease];
38}
39
40- (NSPredicate *)asPredicate {
41  NSExpression *lhs, *rhs;
42  id  tmp;
43
44  tmp = [self leftKey];
45  lhs = [tmp isKindOfClass:[EOQualifierVariable class]]
46    ? [NSExpression expressionForVariable:[(EOQualifierVariable *)tmp key]]
47    : [NSExpression expressionForKeyPath:tmp];
48
49  tmp = [self rightKey];
50  rhs = [tmp isKindOfClass:[EOQualifierVariable class]]
51    ? [NSExpression expressionForVariable:[(EOQualifierVariable *)tmp key]]
52    : [NSExpression expressionForKeyPath:tmp];
53
54  return [self predicateWithLeftExpression:lhs rightExpression:rhs
55	       eoSelector:[self selector]];
56}
57
58/* CoreData compatibility */
59
60- (NSComparisonPredicateModifier)comparisonPredicateModifier {
61  return NSDirectPredicateModifier;
62}
63
64- (NSPredicateOperatorType)predicateOperatorType {
65  return [[self class] predicateOperatorTypeForEOSelector:[self selector]];
66}
67
68- (unsigned)options {
69  return (sel_isEqual([self selector], EOQualifierOperatorCaseInsensitiveLike))
70    ? NSCaseInsensitivePredicateOption : 0;
71}
72
73- (SEL)customSelector {
74  return [self predicateOperatorType] == NSCustomSelectorPredicateOperatorType
75    ? [self selector] : nil;
76}
77
78@end /* EOKeyComparisonQualifier(CoreData) */
79