Re: [Mysql-cocoa-users] testing for a NULL value from the db

[Aaron J. <aj...@ed...>]

It its class is NSNull, why not do:

if ([[row objectForKey:@"COMMENT"] class] != NSNull)

Aaron


On Jul 22, 2004, at 11:14 AM, John Spicer wrote:

> I have some rows in the database table that are nulls.
>
> I am trying to do an assignment like this:
>
> 			[thisOne setCOMMENT:[row objectForKey:@"COMMENT"]];
>
>
> but later on in assignments to elements I get an error of
>
> *** -[NSNull length]: selector not recognized
>
> since it's a null and not a string.
>
> How do I test this coming from the db and set it to an empty string?
>
> I tried this
>
> 		if ([row objectForKey:@"COMMENT"] != NULL)
>
>
> but it's not a null, it's an object with a name of NSNull which I 
> don't know how to deal with!
>
> Help!