/Trybe/Categories/NSManagedObject/NSManagedObject+MagicalFinders.m

https://bitbucket.org/sensicalapps/trybe · Objective C · 346 lines · 269 code · 69 blank · 8 comment · 1 complexity · d59fd52682cbb69977e14dcbfd7f10f2 MD5 · raw file 

    

  1. //
    2. 

  2. //  NSManagedObject+MagicalFinders.m
    3. 

  3. //  Magical Record
    4. 

  4. //
    5. 

  5. //  Created by Saul Mora on 3/7/12.
    6. 

  6. //  Copyright (c) 2012 Magical Panda Software LLC. All rights reserved.
    7. 

  7. //
    8. 

  8. 

  9. #import "NSManagedObject+MagicalFinders.h"
    10. 

  10. #import "NSManagedObject+MagicalRequests.h"
    11. 

  11. #import "NSManagedObject+MagicalRecord.h"
    12. 

  12. #import "NSManagedObjectContext+MagicalThreading.h"
    13. 

  13. 

  14. @implementation NSManagedObject (MagicalFinders)
    15. 

  15. 

  16. #pragma mark - Finding Data
    17. 

  17. 

  18. 

  19. + (NSArray *) MR_findAllInContext:(NSManagedObjectContext *)context
    20. 

  20. {
    21. 

  21. 	return [self MR_executeFetchRequest:[self MR_requestAllInContext:context] inContext:context];
    22. 

  22. }
    23. 

  23. 

  24. + (NSArray *) MR_findAll
    25. 

  25. {
    26. 

  26. 	return [self MR_findAllInContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    27. 

  27. }
    28. 

  28. 

  29. + (NSArray *) MR_findAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context
    30. 

  30. {
    31. 

  31. 	NSFetchRequest *request = [self MR_requestAllSortedBy:sortTerm ascending:ascending inContext:context];
    32. 

  32. 	
    33. 

  33. 	return [self MR_executeFetchRequest:request inContext:context];
    34. 

  34. }
    35. 

  35. 

  36. + (NSArray *) MR_findAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending
    37. 

  37. {
    38. 

  38. 	return [self MR_findAllSortedBy:sortTerm
    39. 

  39.                           ascending:ascending 
    40. 

  40.                           inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    41. 

  41. }
    42. 

  42. 

  43. + (NSArray *) MR_findAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending withPredicate:(NSPredicate *)searchTerm inContext:(NSManagedObjectContext *)context
    44. 

  44. {
    45. 

  45. 	NSFetchRequest *request = [self MR_requestAllSortedBy:sortTerm
    46. 

  46.                                                 ascending:ascending
    47. 

  47.                                             withPredicate:searchTerm
    48. 

  48.                                                 inContext:context];
    49. 

  49. 	
    50. 

  50. 	return [self MR_executeFetchRequest:request inContext:context];
    51. 

  51. }
    52. 

  52. 

  53. + (NSArray *) MR_findAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending withPredicate:(NSPredicate *)searchTerm
    54. 

  54. {
    55. 

  55. 	return [self MR_findAllSortedBy:sortTerm
    56. 

  56.                           ascending:ascending
    57. 

  57.                       withPredicate:searchTerm 
    58. 

  58.                           inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    59. 

  59. }
    60. 

  60. 

  61. 

  62. + (NSArray *) MR_findAllWithPredicate:(NSPredicate *)searchTerm inContext:(NSManagedObjectContext *)context
    63. 

  63. {
    64. 

  64. 	NSFetchRequest *request = [self MR_createFetchRequestInContext:context];
    65. 

  65. 	[request setPredicate:searchTerm];
    66. 

  66. 	
    67. 

  67. 	return [self MR_executeFetchRequest:request
    68. 

  68.                               inContext:context];
    69. 

  69. }
    70. 

  70. 

  71. + (NSArray *) MR_findAllWithPredicate:(NSPredicate *)searchTerm
    72. 

  72. {
    73. 

  73. 	return [self MR_findAllWithPredicate:searchTerm
    74. 

  74.                                inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    75. 

  75. }
    76. 

  76. 

  77. + (id) MR_findFirstInContext:(NSManagedObjectContext *)context
    78. 

  78. {
    79. 

  79. 	NSFetchRequest *request = [self MR_createFetchRequestInContext:context];
    80. 

  80. 	
    81. 

  81. 	return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
    82. 

  82. }
    83. 

  83. 

  84. + (id) MR_findFirst
    85. 

  85. {
    86. 

  86. 	return [self MR_findFirstInContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    87. 

  87. }
    88. 

  88. 

  89. + (id) MR_findFirstByAttribute:(NSString *)attribute withValue:(id)searchValue inContext:(NSManagedObjectContext *)context
    90. 

  90. {	
    91. 

  91. 	NSFetchRequest *request = [self MR_requestFirstByAttribute:attribute withValue:searchValue inContext:context];
    92. 

  92.     //    [request setPropertiesToFetch:[NSArray arrayWithObject:attribute]];
    93. 

  93.     
    94. 

  94. 	return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
    95. 

  95. }
    96. 

  96. 

  97. + (id) MR_findFirstByAttribute:(NSString *)attribute withValue:(id)searchValue
    98. 

  98. {
    99. 

  99. 	return [self MR_findFirstByAttribute:attribute
    100. 

  100.                                withValue:searchValue 
    101. 

  101.                                inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    102. 

  102. }
    103. 

  103. 

  104. + (id) MR_findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context;
    105. 

  105. {
    106. 

  106.     NSFetchRequest *request = [self MR_requestAllSortedBy:attribute ascending:ascending inContext:context];
    107. 

  107.     [request setFetchLimit:1];
    108. 

  108. 

  109.     return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
    110. 

  110. }
    111. 

  111. 

  112. + (id) MR_findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending;
    113. 

  113. {
    114. 

  114.     return [self MR_findFirstOrderedByAttribute:attribute
    115. 

  115.                                       ascending:ascending
    116. 

  116.                                       inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    117. 

  117. }
    118. 

  118. 

  119. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm
    120. 

  120. {
    121. 

  121.     return [self MR_findFirstWithPredicate:searchTerm inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    122. 

  122. }
    123. 

  123. 

  124. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm inContext:(NSManagedObjectContext *)context
    125. 

  125. {
    126. 

  126.     NSFetchRequest *request = [self MR_requestFirstWithPredicate:searchTerm inContext:context];
    127. 

  127.     
    128. 

  128.     return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
    129. 

  129. }
    130. 

  130. 

  131. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchterm sortedBy:(NSString *)property ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context
    132. 

  132. {
    133. 

  133. 	NSFetchRequest *request = [self MR_requestAllSortedBy:property ascending:ascending withPredicate:searchterm inContext:context];
    134. 

  134.     
    135. 

  135. 	return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
    136. 

  136. }
    137. 

  137. 

  138. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchterm sortedBy:(NSString *)property ascending:(BOOL)ascending
    139. 

  139. {
    140. 

  140. 	return [self MR_findFirstWithPredicate:searchterm
    141. 

  141.                                   sortedBy:property 
    142. 

  142.                                  ascending:ascending 
    143. 

  143.                                  inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    144. 

  144. }
    145. 

  145. 

  146. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm andRetrieveAttributes:(NSArray *)attributes inContext:(NSManagedObjectContext *)context
    147. 

  147. {
    148. 

  148. 	NSFetchRequest *request = [self MR_createFetchRequestInContext:context];
    149. 

  149. 	[request setPredicate:searchTerm];
    150. 

  150. 	[request setPropertiesToFetch:attributes];
    151. 

  151. 	
    152. 

  152. 	return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
    153. 

  153. }
    154. 

  154. 

  155. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm andRetrieveAttributes:(NSArray *)attributes
    156. 

  156. {
    157. 

  157. 	return [self MR_findFirstWithPredicate:searchTerm
    158. 

  158.                      andRetrieveAttributes:attributes 
    159. 

  159.                                  inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    160. 

  160. }
    161. 

  161. 

  162. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortBy ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context andRetrieveAttributes:(id)attributes, ...
    163. 

  163. {
    164. 

  164. 	NSFetchRequest *request = [self MR_requestAllSortedBy:sortBy
    165. 

  165.                                                 ascending:ascending
    166. 

  166.                                             withPredicate:searchTerm
    167. 

  167.                                                 inContext:context];
    168. 

  168. 	[request setPropertiesToFetch:[self MR_propertiesNamed:attributes]];
    169. 

  169. 	
    170. 

  170. 	return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
    171. 

  171. }
    172. 

  172. 

  173. + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortBy ascending:(BOOL)ascending andRetrieveAttributes:(id)attributes, ...
    174. 

  174. {
    175. 

  175. 	return [self MR_findFirstWithPredicate:searchTerm
    176. 

  176.                                   sortedBy:sortBy 
    177. 

  177.                                  ascending:ascending 
    178. 

  178.                                  inContext:[NSManagedObjectContext MR_contextForCurrentThread]
    179. 

  179.                      andRetrieveAttributes:attributes];
    180. 

  180. }
    181. 

  181. 

  182. + (NSArray *) MR_findByAttribute:(NSString *)attribute withValue:(id)searchValue inContext:(NSManagedObjectContext *)context
    183. 

  183. {
    184. 

  184.     NSFetchRequest *request = [self MR_requestAllWhere:attribute isEqualTo:searchValue inContext:context];
    185. 

  185. 	
    186. 

  186. 	return [self MR_executeFetchRequest:request inContext:context];
    187. 

  187. }
    188. 

  188. 

  189. + (NSArray *) MR_findByAttribute:(NSString *)attribute withValue:(id)searchValue
    190. 

  190. {
    191. 

  191. 	return [self MR_findByAttribute:attribute
    192. 

  192.                           withValue:searchValue 
    193. 

  193.                           inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    194. 

  194. }
    195. 

  195. 

  196. + (NSArray *) MR_findByAttribute:(NSString *)attribute withValue:(id)searchValue andOrderBy:(NSString *)sortTerm ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context
    197. 

  197. {
    198. 

  198. 	NSPredicate *searchTerm = [NSPredicate predicateWithFormat:@"%K = %@", attribute, searchValue];
    199. 

  199. 	NSFetchRequest *request = [self MR_requestAllSortedBy:sortTerm ascending:ascending withPredicate:searchTerm inContext:context];
    200. 

  200. 	
    201. 

  201. 	return [self MR_executeFetchRequest:request inContext:context];
    202. 

  202. }
    203. 

  203. 

  204. + (NSArray *) MR_findByAttribute:(NSString *)attribute withValue:(id)searchValue andOrderBy:(NSString *)sortTerm ascending:(BOOL)ascending
    205. 

  205. {
    206. 

  206. 	return [self MR_findByAttribute:attribute
    207. 

  207.                           withValue:searchValue
    208. 

  208.                          andOrderBy:sortTerm 
    209. 

  209.                           ascending:ascending 
    210. 

  210.                           inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    211. 

  211. }
    212. 

  212. 

  213. 

  214. #pragma mark -
    215. 

  215. #pragma mark NSFetchedResultsController helpers
    216. 

  216. 

  217. 

  218. #if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
    219. 

  219. 

  220. + (NSFetchedResultsController *) MR_fetchController:(NSFetchRequest *)request delegate:(id<NSFetchedResultsControllerDelegate>)delegate useFileCache:(BOOL)useFileCache groupedBy:(NSString *)groupKeyPath inContext:(NSManagedObjectContext *)context
    221. 

  221. {
    222. 

  222.     NSString *cacheName = useFileCache ? [NSString stringWithFormat:@"MagicalRecord-Cache-%@", NSStringFromClass([self class])] : nil;
    223. 

  223.     
    224. 

  224. 	NSFetchedResultsController *controller =
    225. 

  225.     [[NSFetchedResultsController alloc] initWithFetchRequest:request
    226. 

  226.                                         managedObjectContext:context
    227. 

  227.                                           sectionNameKeyPath:groupKeyPath
    228. 

  228.                                                    cacheName:cacheName];
    229. 

  229.     controller.delegate = delegate;
    230. 

  230.     
    231. 

  231.     return controller;
    232. 

  232. }
    233. 

  233. 

  234. + (NSFetchedResultsController *) MR_fetchAllWithDelegate:(id<NSFetchedResultsControllerDelegate>)delegate;
    235. 

  235. {
    236. 

  236.     return [self MR_fetchAllWithDelegate:delegate inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    237. 

  237. }
    238. 

  238. 

  239. + (NSFetchedResultsController *) MR_fetchAllWithDelegate:(id<NSFetchedResultsControllerDelegate>)delegate inContext:(NSManagedObjectContext *)context;
    240. 

  240. {
    241. 

  241.     NSFetchRequest *request = [self MR_requestAllInContext:context];
    242. 

  242.     NSFetchedResultsController *controller = [self MR_fetchController:request delegate:delegate useFileCache:NO groupedBy:nil inContext:context];
    243. 

  243. 

  244.     [self MR_performFetch:controller];
    245. 

  245.     return controller;
    246. 

  246. }
    247. 

  247. 

  248. + (NSFetchedResultsController *) MR_fetchAllGroupedBy:(NSString *)group withPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortTerm ascending:(BOOL)ascending delegate:(id<NSFetchedResultsControllerDelegate>)delegate inContext:(NSManagedObjectContext *)context
    249. 

  249. {
    250. 

  250. 	NSFetchRequest *request = [self MR_requestAllSortedBy:sortTerm 
    251. 

  251.                                                 ascending:ascending 
    252. 

  252.                                             withPredicate:searchTerm
    253. 

  253.                                                 inContext:context];
    254. 

  254.     
    255. 

  255.     NSFetchedResultsController *controller = [self MR_fetchController:request 
    256. 

  256.                                                              delegate:delegate
    257. 

  257.                                                          useFileCache:NO
    258. 

  258.                                                             groupedBy:group
    259. 

  259.                                                             inContext:context];
    260. 

  260.     
    261. 

  261.     [self MR_performFetch:controller];
    262. 

  262.     return controller;
    263. 

  263. }
    264. 

  264. 

  265. + (NSFetchedResultsController *) MR_fetchAllGroupedBy:(NSString *)group withPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortTerm ascending:(BOOL)ascending delegate:(id)delegate
    266. 

  266. {
    267. 

  267. 	return [self MR_fetchAllGroupedBy:group
    268. 

  268.                         withPredicate:searchTerm
    269. 

  269.                              sortedBy:sortTerm
    270. 

  270.                             ascending:ascending
    271. 

  271.                              delegate:delegate
    272. 

  272.                             inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    273. 

  273. }
    274. 

  274. 

  275. + (NSFetchedResultsController *) MR_fetchAllGroupedBy:(NSString *)group withPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortTerm ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context;
    276. 

  276. {
    277. 

  277.     return [self MR_fetchAllGroupedBy:group 
    278. 

  278.                         withPredicate:searchTerm
    279. 

  279.                              sortedBy:sortTerm
    280. 

  280.                             ascending:ascending
    281. 

  281.                              delegate:nil
    282. 

  282.                             inContext:context];
    283. 

  283. }
    284. 

  284. 

  285. + (NSFetchedResultsController *) MR_fetchAllGroupedBy:(NSString *)group withPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortTerm ascending:(BOOL)ascending 
    286. 

  286. {
    287. 

  287.     return [self MR_fetchAllGroupedBy:group 
    288. 

  288.                         withPredicate:searchTerm
    289. 

  289.                              sortedBy:sortTerm
    290. 

  290.                             ascending:ascending
    291. 

  291.                             inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    292. 

  292. }
    293. 

  293. 

  294. 

  295. + (NSFetchedResultsController *) MR_fetchAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending withPredicate:(NSPredicate *)searchTerm groupBy:(NSString *)groupingKeyPath inContext:(NSManagedObjectContext *)context
    296. 

  296. {
    297. 

  297.     NSFetchRequest *request = [self MR_requestAllSortedBy:sortTerm
    298. 

  298.                                                 ascending:ascending
    299. 

  299.                                             withPredicate:searchTerm
    300. 

  300.                                                 inContext:context];
    301. 

  301.     
    302. 

  302. 	NSFetchedResultsController *controller = [self MR_fetchController:request 
    303. 

  303.                                                              delegate:nil
    304. 

  304.                                                          useFileCache:NO
    305. 

  305.                                                             groupedBy:groupingKeyPath
    306. 

  306.                                                             inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    307. 

  307.     
    308. 

  308.     [self MR_performFetch:controller];
    309. 

  309.     return controller;
    310. 

  310. }
    311. 

  311. 

  312. + (NSFetchedResultsController *) MR_fetchAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending withPredicate:(NSPredicate *)searchTerm groupBy:(NSString *)groupingKeyPath;
    313. 

  313. {
    314. 

  314.     return [self MR_fetchAllSortedBy:sortTerm
    315. 

  315.                            ascending:ascending
    316. 

  316.                        withPredicate:searchTerm
    317. 

  317.                              groupBy:groupingKeyPath
    318. 

  318.                            inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    319. 

  319. }
    320. 

  320. 

  321. + (NSFetchedResultsController *) MR_fetchAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending withPredicate:(NSPredicate *)searchTerm groupBy:(NSString *)groupingKeyPath delegate:(id<NSFetchedResultsControllerDelegate>)delegate inContext:(NSManagedObjectContext *)context
    322. 

  322. {
    323. 

  323. 	NSFetchedResultsController *controller = [self MR_fetchAllGroupedBy:groupingKeyPath 
    324. 

  324.                                                           withPredicate:searchTerm
    325. 

  325.                                                                sortedBy:sortTerm 
    326. 

  326.                                                               ascending:ascending
    327. 

  327.                                                                delegate:delegate
    328. 

  328.                                                               inContext:context];
    329. 

  329. 	
    330. 

  330. 	[self MR_performFetch:controller];
    331. 

  331. 	return controller;
    332. 

  332. }
    333. 

  333. 

  334. + (NSFetchedResultsController *) MR_fetchAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending withPredicate:(NSPredicate *)searchTerm groupBy:(NSString *)groupingKeyPath delegate:(id<NSFetchedResultsControllerDelegate>)delegate
    335. 

  335. {
    336. 

  336. 	return [self MR_fetchAllSortedBy:sortTerm 
    337. 

  337.                            ascending:ascending
    338. 

  338.                        withPredicate:searchTerm 
    339. 

  339.                              groupBy:groupingKeyPath 
    340. 

  340.                             delegate:delegate
    341. 

  341.                            inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
    342. 

  342. }
    343. 

  343. 

  344. #endif
    345. 

  345. 

  346. @end
    347.