Created
August 17, 2012 09:22
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Create custom classes by custom classes inheriting from NSFNanoObject
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#import "NSFNanoObject.h" | |
@interface Person : NSFNanoObject | |
@property (nonatomic, strong) NSString *name; | |
@property (nonatomic, strong) NSString *location; | |
@end |
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#import "Person.h" | |
#import "NanoStore.h" | |
@implementation Person | |
@synthesize name; | |
@synthesize location; | |
- (id)initFromDictionaryRepresentation:(NSDictionary *)theDictionary | |
{ | |
[self clearNulls:theDictionary]; | |
self = [super initFromDictionaryRepresentation:theDictionary]; | |
if (self) { | |
self.name = [theDictionary objectForKey:@"name"]; | |
self.location = [theDictionary objectForKey:@"location"]; | |
} | |
return self; | |
} | |
@end |
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#import "Person.h" | |
@interface SomeController () | |
@end | |
@implementation SomeController | |
-(void)awakeFromNib | |
{ | |
// ... | |
NSString *thePath = @"~/Desktop/peopleApp.database"; | |
NSFNanoStore *nanoStore = [NSFNanoStore createAndOpenStoreWithType:NSFPersistentStoreType path:thePath error:nil]; | |
// Obtain the engine | |
NSFNanoEngine *nanoStoreEngine = [nanoStore nanoStoreEngine]; | |
// Set the synchronous mode setting | |
[nanoStoreEngine setSynchronousMode:SynchronousModeOff]; | |
[nanoStoreEngine setEncodingType:NSFEncodingUTF16]; | |
// Open the document store | |
[nanoStore openWithError:nil]; | |
// This should initialize a newly created NanoObject for Person as the NanoObject.h suggest | |
// + (NSFNanoObject*)nanoObjectWithDictionary:(NSDictionary *)theDictionary; | |
// /** * Initializes a newly allocated NanoObject with the given dictionary. | |
Person *aPerson = [[Person alloc] initFromDictionaryRepresentation:personDict]; | |
// ... | |
} | |
@end |
@tciuro GREAT! I will be checking for the fix and upgrade NanoStore in my project soon. So far its been a pleasure to work with :). And thanks for the tip for no using properties directly. Still fairly new to Cocoa and Obj-C but so far really enjoying it. Thanks again :)
@tciuro it works!!! Thanks a lot!
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Yes, I now understand what you mean. I have realized that NSFNanoObject does not initialize the object properly if it's inited like you want to. I just didn't think someone would initialize it like this (though it makes perfect sense.) So this is what I'm going to fix issue #34.
Advice: do not use the properties directly. In the init method, access them directly since the object may not be fully ready when you invoke them via property. To do that, replace the following code:
@synthesize name = _name;
@synthesize location = _location;
(id)initFromDictionaryRepresentation:(NSDictionary *)theDictionary
{
[self clearNulls:theDictionary];
if (self = [super init]) {
name = [[theDictionary objectForKey:@"name"]copy];
location = [[theDictionary objectForKey:@"location"]copy];
}
return self;
}
I'll be checking the fix very soon.