[ https://issues.apache.org/jira/brow...action_12507695 ]

Craig Russell commented on JDO-403:
-----------------------------------

Andy sez:
> You have to have an array of Columns because if the implementation is mapping a fi
eld to multiple Columns then they are needed. e.g java.awt.Color JPOX maps to 4 cols
. How do I embed that and specify the mapping if only one column is available?[/vbco
l]

Can you give an example of this? As I understand it, if you have an embedded
 field of type java.awt.Color you would map it to four columns each of which
 has a field name, e.g. field r, field g, field b, field a. So you only need
 one column per field in th
is case.

But there are other cases where it is useful to map a field to multiple colu
mns.

[vbcol=seagreen]
> JDO2 Annotations
> ----------------
>
>                 Key: JDO-403
>                 URL: https://issues.apache.org/jira/browse/JDO-403
>             Project: JDO
>          Issue Type: New Feature
>          Components: api2
>    Affects Versions: JDO 2 final
>            Reporter: Andy Jefferson
>            Assignee: Michelle Caisse
>             Fix For: JDO 2 maintenance release 1
>
>         Attachments: embedded.patch, jdo_2_1_annotations.jar
>
>
> It would be desirable for JDO2 to have its own set of annotations. We have
 developed a set within JPOX that would likely serve as a starting point for
 such a set. In my opinion they should be
> 1. Split into javax.jdo.annotations.jdo and javax.jdo.annotations.orm
> 2. Move ORM attributes from some of the JDO annotations and have a ORM annotation.


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