RE: [JBoss-user] Is this true?

[JD B. <br...@re...>]

I think it depends on your database.  In MySQL you can
get a NULL for an INTEGER column, but in Oracle if you
set the column to 0, you get NULL, so you can't tell
them apart.

JD

-----Original Message-----
From: Dan Christopherson [mailto:da...@nv...]
Sent: Monday, April 14, 2003 7:43 AM
To: jbo...@li...
Subject: Re: [JBoss-user] Is this true?


If it just set it to 0, how would you know that it was null? It might 
work for you, in this case, but remember that EJB containers need to be 
general purpose.

If the field is nullable, you need to map it to a member of type 
java.lang.Integer.

hth,
danch

NIELSEN JAN, Teliadk wrote:
> Hi,
> 
> 
> I have an CMP that contains an Integer field(Hypersonic), that may be
null.
> 
> When calling the get method on the CMP, the CMP throws a null pointer
> exception. 
> 
> Shouln't it just set it to 0, instead of throwing a null pointer
> exception???
> 
> I'm running JBOSS3.0.6
> 
> Cheers
> J
> 
> 
> 
> 
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