Re: EOModel and derived column.
Re: EOModel and derived column.
- Subject: Re: EOModel and derived column.
- From: Mike Schrag <email@hidden>
- Date: Wed, 24 Nov 2010 07:02:08 -0500
that's just an eogenerator template bug ...
ms
On Nov 24, 2010, at 2:37 AM, Theodore Petrosky wrote:
> I am reading the Red Webobject 5.0 book and I think I finally understand the small section on creating an attribute the is derived.
>
> (I am using postgresql as the backend)
>
> so my User entity has a firstName and a lastName. I created an attribute called 'theFullName' as derived "firstName || ' ' || lastName", in the advanced tab, I choose "Read Only".
>
> i assumed that would be enough, however I needed to also select 'allows null' in the basic tab. if I didn't, User.createUser(yada, yada); required a 'theFullName' attribute.
>
> My assumption was that as the column is derived and read only, I thought the column was special and shouldn't need the 'allows null' selection.
>
> so, did I do it correctly?
> as the column is a derived column and read only, why do I need to add 'allows null'?
>
> I have been creating all these derivatives in java in my User.java file, but I thought I would expand my understanding and play with some features.
>
> now on to stored proceedures.
>
> Ted
>
>
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Webobjects-dev mailing list (email@hidden)
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden