sqlite事务处理

//插入批量数据,可启用事务
- (void)insertDataWithCount:(NSInteger)count isUseTransaction:(BOOL)isUse{
if (isUse) {
//手动启用事务
BOOL isError = NO;
@try {
//写可能出现异常的代码
[_dataBase beginTransaction];//手动开启一个事务
for (int i=0; i<count; i++) {
NSString *idStr =[NSString stringWithFormat:@"%d",i];
NSString *stName = [NSString stringWithFormat:@"student%d",i];
NSString *insertSql = @"insert into student(id,name) values(?,?)";
if (![_dataBase executeUpdate:insertSql,idStr,stName]) {
NSLog(@"insert error:%@",_dataBase.lastErrorMessage);
}
}
}
@catch (NSException *exception) {
//捕获到异常
NSLog(@"error:%@",exception.reason);
isError = YES;
[_dataBase rollback];//回滚，回到最初的状态
}
@finally {
//无论有没有异常，代码都会执行到此处
if (isError==NO) {
[_dataBase commit];//提交事务，让批量操作生效
}
}
}else{
//常规操作
for (int i=0; i<count; i++) {
NSString *idStr =[NSString stringWithFormat:@"%d",i];
NSString *stName = [NSString stringWithFormat:@"student%d",i];
NSString *insertSql = @"insert into student(id,name) values(?,?)";
if (![_dataBase executeUpdate:insertSql,idStr,stName]) {
NSLog(@"insert error:%@",_dataBase.lastErrorMessage);
}
}
}
}