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)
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///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
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/** 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
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/** 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" ); } }]; } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/wangkejia/p/7818236.html