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From Craig L Russell <Craig.Russ...@Sun.COM>
Subject Re: jdo 2.1 - 18.14 property
Date Fri, 17 Aug 2007 15:44:49 GMT
Hi Erik,

The 18.14 section is incomplete; it doesn't address the several use  
cases that we discussed a couple of months ago. I'm going to update  
the section as soon as I review the discussion.

Thanks,

Craig

On Aug 17, 2007, at 3:04 AM, Erik Bengtson wrote:

> Hi,
>
> ยง18.14
> "When contained in a class element:
> - The field-name attribute is required; it associates a persistent  
> field with
> the named property."
>
> AFAIR field-name attribute is used for generated classes. It should  
> be optional
> when contained in class or interface elements.
>
> e.g.
>
> //user given interface
> interface Animal
> {
> @Persistent(fieldname="kind2")
> int getKind();
> }
>
> //jdo implementation generated class
> class GeneratedAnimal
> {
>      int kind2;
>      int getKind()
>      {
>         return kind2;
>      }
> }
>
> or
> ---
>
> //user given abstract class
> abstract Jedi
> {
> int jedilevel;
> @Persistent(fieldname="jedilevel")
> int getLevel();
> }
>
> //jdo implementation generated class
> class GeneratedJedi
> {
>      int jedilevel;
>      int getLevel()
>      {
>         return jedilevel;
>      }
> }
>
>
> The new wording could be:
> "When contained in a class or interface element:
> - The field-name attribute is optional; it associates a persistent  
> property with
> a named field."
>

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!


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