时间:2021-08-31 09:59:39 | 栏目:iOS代码 | 点击:次
本文实例为大家分享了iOS中FMDB事务实现批量更新数据,供大家参考,具体内容如下
打开数据库(sqlite)
///打开数据库 + (BOOL)openDataBase{ _TYDatabase = [[FMDatabase alloc]initWithPath:[self databasePath]]; if ([_TYDatabase open]) { return YES; } return NO; } ///数据库路径 + (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; }
事务
/** 事务 arraySql:SQL语句数组 */ - (void)beginTransaction:(NSArray *)arraySql; { //// static FMDatabase *_TYDatabase = nil; BOOL isOpen=[_TYDatabase open]; if (!isOpen) { NSLog(@"打开数据库失败!"); return; } ///开始事物 [_TYDatabase beginTransaction]; BOOL isRollBack = NO; @try { for (int i = 0; i<arraySql.count; i++) { BOOL result = [_TYDatabase executeUpdate:arraySql[i]]; if (!result) { NSLog(@"操作失败【%d】== SQL:%@",i,arraySql[i]); } } } @catch (NSException *exception) { isRollBack = YES; ///回滚 [_TYDatabase rollback]; } @finally { if (!isRollBack) { ///提交 [_TYDatabase commit]; } } [_TYDatabase close]; }
多线程事务
/** 多线程事务 arraySql:SQL语句数组 */ + (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"); } }]; }