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Diffstat (limited to 'Frameworks/QueryKit/Source/QKQueryOrderBy.m')
-rw-r--r-- | Frameworks/QueryKit/Source/QKQueryOrderBy.m | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/Frameworks/QueryKit/Source/QKQueryOrderBy.m b/Frameworks/QueryKit/Source/QKQueryOrderBy.m new file mode 100644 index 00000000..36b43248 --- /dev/null +++ b/Frameworks/QueryKit/Source/QKQueryOrderBy.m @@ -0,0 +1,81 @@ +// +// $Id$ +// +// QKQueryOrderBy.m +// QueryKit +// +// Created by Stuart Connolly (stuconnolly.com) on July 15, 2012 +// Copyright (c) 2012 Stuart Connolly. All rights reserved. +// +// Permission is hereby granted, free of charge, to any person +// obtaining a copy of this software and associated documentation +// files (the "Software"), to deal in the Software without +// restriction, including without limitation the rights to use, +// copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following +// conditions: +// +// The above copyright notice and this permission notice shall be +// included in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES +// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT +// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +// OTHER DEALINGS IN THE SOFTWARE. + +#import "QKQueryOrderBy.h" + +@implementation QKQueryOrderBy + +@synthesize _orderByField; +@synthesize _orderByDescending; + +#pragma mark - +#pragma mark Initialisation + ++ (QKQueryOrderBy *)orderByField:(NSString *)field descending:(BOOL)descending +{ + return [[[QKQueryOrderBy alloc] initWithField:field descending:descending] autorelease]; +} + +- (id)init +{ + return [self initWithField:nil descending:NO]; +} + +- (id)initWithField:(NSString *)field descending:(BOOL)descending +{ + if ((self = [super init])) { + [self setOrderByField:field]; + [self setOrderByDescending:descending]; + } + + return self; +} + +#pragma mark - + +- (NSString *)description +{ + if (!_orderByField || [_orderByField length] == 0) return EMPTY_STRING; + + NSString *field = [_orderByField stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; + + return [NSString stringWithFormat:@"%1$@%2$@%1$@ %3$@", [self useQuotedIdentifier] ? _identiferQuote : EMPTY_STRING, field, _orderByDescending ? @"DESC" : @"ASC"]; +} + +#pragma mark - + +- (void)dealloc +{ + if (_orderByField) [_orderByField release], _orderByField = nil; + + [super dealloc]; +} + +@end |