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//
// Store.m
// TransitDataImport
//
// Created by Chris Eidhof on 6/16/13.
// Copyright (c) 2013 objc.io. All rights reserved.
//
#import "Store.h"
@interface Store ()
@property (nonatomic,strong,readwrite) NSManagedObjectContext* mainManagedObjectContext;
@property (nonatomic,strong) NSManagedObjectModel* managedObjectModel;
@property (nonatomic,strong) NSPersistentStoreCoordinator* persistentStoreCoordinator;
@end
@implementation Store
- (id)init
{
self = [super init];
if (self) {
[self setupSaveNotification];
}
return self;
}
- (void)setupSaveNotification
{
[[NSNotificationCenter defaultCenter] addObserverForName:NSManagedObjectContextDidSaveNotification
object:nil
queue:nil
usingBlock:^(NSNotification* note) {
NSManagedObjectContext *moc = self.mainManagedObjectContext;
if (note.object != moc) {
[moc performBlock:^(){
[moc mergeChangesFromContextDidSaveNotification:note];
}];
}
}];
}
- (void)saveContext
{
NSError *error = nil;
NSManagedObjectContext *managedObjectContext = self.mainManagedObjectContext;
if (managedObjectContext != nil) {
if ([managedObjectContext hasChanges] && ![managedObjectContext save:&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.
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
}
// 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 *)mainManagedObjectContext
{
if (_mainManagedObjectContext != nil) {
return _mainManagedObjectContext;
}
_mainManagedObjectContext = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSMainQueueConcurrencyType];
_mainManagedObjectContext.persistentStoreCoordinator = [self persistentStoreCoordinator];
return _mainManagedObjectContext;
}
// 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:@"TransitDataImport" 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:@"TransitDataImport.sqlite"];
NSError *error = nil;
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) {
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];
}
- (NSManagedObjectContext*)newPrivateContext
{
NSManagedObjectContext* context = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType];
context.persistentStoreCoordinator = self.persistentStoreCoordinator;
return context;
}
@end