我們?cè)陂_發(fā)過程中需要很多數(shù)據(jù),不管使用什么界面,都需要隨時(shí)進(jìn)行修改,刪除的操作,那么iOS中FMDB事務(wù)實(shí)現(xiàn)批量更新數(shù)據(jù),大家清楚嗎?下面就跟著武林技術(shù)頻道來學(xué)習(xí)吧!
打開數(shù)據(jù)庫(sqlite)
///打開數(shù)據(jù)庫+ (BOOL)openDataBase{ _TYDatabase = [[FMDatabase alloc]initWithPath:[self databasePath]]; if ([_TYDatabase open]) { return YES; } return NO;}///數(shù)據(jù)庫路徑+ (NSString *)databasePath{ NSString *documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; NSString *dataPath = [documentPath stringByAppendingPathComponent:@"TY.SQLite"]; NSFileManager *fileM = [NSFileManager defaultManager]; if (![fileM fileExistsAtPath:dataPath]) { NSString *filePath = [[NSBundle mainBundle] pathForResource:@"TY" ofType:@"SQLite"]; [fileM copyItemAtPath:filePath toPath:dataPath error:nil]; } NSLog(@"%@",dataPath); return dataPath; }事務(wù)
/** 事務(wù) arraySql:SQL語句數(shù)組 */- (void)beginTransaction:(NSArray *)arraySql;{ //// static FMDatabase *_TYDatabase = nil; BOOL isOpen=[_TYDatabase open]; if (!isOpen) { NSLog(@"打開數(shù)據(jù)庫失敗!"); return; } ///開始事物 [_TYDatabase beginTransaction]; BOOL isRollBack = NO; @try { for (int i = 0; i<arraySql.count; i++) { BOOL result = [_TYDatabase executeUpdate:arraySql[i]]; if (!result) { NSLog(@"操作失敗【%d】== SQL:%@",i,arraySql[i]); } } } @catch (NSException *exception) { isRollBack = YES; ///回滾 [_TYDatabase rollback]; } @finally { if (!isRollBack) { ///提交 [_TYDatabase commit]; } } [_TYDatabase close];}多線程事務(wù)
/** 多線程事務(wù) arraySql:SQL語句數(shù)組 */+ (void)beginTransactionT:(NSArray *)arraySql{ FMDatabaseQueue *databaseQueue = [FMDatabaseQueue databaseQueueWithPath:[self databasePath]]; [databaseQueue inTransaction:^(FMDatabase *db, BOOL *rollback) { BOOL result = NO; for (int i = 0; i < arraySql.count; i++) { result = [_TYDatabase executeUpdate:arraySql[i]]; } if (result) { NSLog(@"成功"); } }];}不得不說武林技術(shù)頻道介紹的,iOS中FMDB事務(wù)實(shí)現(xiàn)批量更新數(shù)據(jù)是我們都需要了解的,本文可以說很不錯(cuò),值得大家去細(xì)細(xì)品讀。
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