-
Notifications
You must be signed in to change notification settings - Fork 0
/
KYJDataManager.m
168 lines (135 loc) · 6.59 KB
/
KYJDataManager.m
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
//
// KYJDataManager.m
// NotesApp
//
// Created by Kevin Jiang on 2/28/13.
// Copyright (c) 2013 Kevin Jiang. All rights reserved.
//
#import "KYJDataManager.h"
#import "Note.h"
#import "Location.h"
#import <CoreData/CoreData.h>
#define kKYJNoteEntityName @"Note"
#define kKYJLocationEntityName @"Location"
#define kKYJSaveError @"Whoops, couldn't save: %@"
@interface KYJDataManager ()
@property (strong, nonatomic) NSManagedObjectContext* managedObjectContext;
@property (strong, nonatomic) NSManagedObjectModel *managedObjectModel;
@property (strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;
@end
@implementation KYJDataManager
- (BOOL)addNoteWithText:(NSString *)title
description:(NSString *)description
locationName:(NSString *)locationName
longitude: (NSNumber*) longitude
latitude: (NSNumber*) latitude;
{
NSManagedObjectContext *context = [self managedObjectContext];
Note *note = [NSEntityDescription insertNewObjectForEntityForName:kKYJNoteEntityName inManagedObjectContext:context];
Location *location = [NSEntityDescription insertNewObjectForEntityForName:kKYJLocationEntityName inManagedObjectContext:context];
note.title = title;
note.description2 = description;
note.location = location;
note.locationName = locationName;
location.latitude = latitude;
location.longitude = longitude;
NSError *error;
if (![context save:&error]) {
NSLog(kKYJSaveError, [error localizedDescription]);
return NO;
}
return YES;
}
- (NSArray *)getAllIdeas
{
NSManagedObjectContext *context = [self managedObjectContext];
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription
entityForName:kKYJNoteEntityName inManagedObjectContext:context];
NSSortDescriptor *sort = [[NSSortDescriptor alloc]
initWithKey:@"title" ascending:YES];
[fetchRequest setSortDescriptors:@[sort]];
[fetchRequest setEntity:entity];
NSError *error;
NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&error];
return fetchedObjects;
}
- (BOOL)updateIdea:(Note *)note withText:(NSString *)title description:(NSString *)description locationName:(NSString *)locationName longitude:(NSNumber *)longitude latitude:(NSNumber *)latitude
{
NSManagedObjectContext *context = [self managedObjectContext];
note.title = title;
note.description2 = description;
note.locationName = locationName;
note.location.latitude = latitude;
note.location.longitude = longitude;
NSError *error;
if (![context save:&error]) {
NSLog(kKYJSaveError, [error localizedDescription]);
return NO;
}
return YES;
}
#pragma mark - Core Data stack
// Returns the managed object context for the application.
// If the context doesn't already exist, it is created and bound to the persistent store coordinator for the application.
- (NSManagedObjectContext *)managedObjectContext
{
if (_managedObjectContext != nil) {
return _managedObjectContext;
}
NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
if (coordinator != nil) {
_managedObjectContext = [[NSManagedObjectContext alloc] init];
[_managedObjectContext setPersistentStoreCoordinator:coordinator];
}
return _managedObjectContext;
}
// Returns the managed object model for the application.
// If the model doesn't already exist, it is created from the application's model.
- (NSManagedObjectModel *)managedObjectModel
{
if (_managedObjectModel != nil) {
return _managedObjectModel;
}
NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"NotesAppModel" withExtension:@"momd"];
_managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL];
return _managedObjectModel;
}
// Returns the persistent store coordinator for the application.
// If the coordinator doesn't already exist, it is created and the application's store added to it.
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator
{
if (_persistentStoreCoordinator != nil) {
return _persistentStoreCoordinator;
}
NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"Notes.sqlite"];
NSError *error = nil;
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
Typical reasons for an error here include:
* The persistent store is not accessible;
* The schema for the persistent store is incompatible with current managed object model.
Check the error message to determine what the actual problem was.
If the persistent store is not accessible, there is typically something wrong with the file path. Often, a file URL is pointing into the application's resources directory instead of a writeable directory.
If you encounter schema incompatibility errors during development, you can reduce their frequency by:
* Simply deleting the existing store:
[[NSFileManager defaultManager] removeItemAtURL:storeURL error:nil]
* Performing automatic lightweight migration by passing the following dictionary as the options parameter:
[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil];
Lightweight migration will only work for a limited set of schema changes; consult "Core Data Model Versioning and Data Migration Programming Guide" for details.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
return _persistentStoreCoordinator;
}
#pragma mark - Application's Documents directory
// Returns the URL to the application's Documents directory.
- (NSURL *)applicationDocumentsDirectory
{
return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
}
@end