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authorstuconnolly <stuart02@gmail.com>2012-07-15 10:15:11 +0000
committerstuconnolly <stuart02@gmail.com>2012-07-15 10:15:11 +0000
commitcb00d18102f8c3f88e8a15bb4d9fb7825cf29a59 (patch)
tree8c266026ae92013dbc028a09d7d98e22bbcfbd5f /Frameworks/QueryKit/Source/QKQueryOrderBy.m
parentdd2c7e34d265c7a4a66b7583a186456095b545ee (diff)
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Add a new order by class.
Diffstat (limited to 'Frameworks/QueryKit/Source/QKQueryOrderBy.m')
-rw-r--r--Frameworks/QueryKit/Source/QKQueryOrderBy.m81
1 files changed, 81 insertions, 0 deletions
diff --git a/Frameworks/QueryKit/Source/QKQueryOrderBy.m b/Frameworks/QueryKit/Source/QKQueryOrderBy.m
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+//
+// $Id$
+//
+// 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