Re: [eclipselink-users] EntityManager.copy/fetch and embeddables

[Andrei Ilitchev <andrei.ilitchev@xxxxxxxxxx>]

I've reproduced it, please log a bug.

On 2/28/2012 12:32 PM, sr_dd wrote:
> Embeddable:
>    <orm:embeddable class="ItemColor">
>      <orm:attributes>
>        <orm:basic name="colorName">
>         <orm:column name="TEXT2" nullable="true"/>
>        </orm:basic>
>      </orm:attributes>
>    </orm:embeddable>
>
> In my Entity Item:
> <orm:embedded name="color" />
>
> toString of my CopyGroup:
> CopyGroup()(depth = CASCADE_TREE, reset key = false, reset version =
> false){compItemNo, whItemNo, ynSupplyChainPriority, styleNo, id, text1,
> versionTimestamp, color}
>
> after loading the entity color is present.
> em.copy(entity, group) brings color at the result to null.
>
>
> Andrei Ilitchev wrote:
> > What's the embedded look like?
> >
> > On 2/28/2012 11:22 AM, sr_dd wrote:
> > > First prob:
> > > reproducer is on my todo-list.
> > >
> > > Second prob:
> > > Even when i add the whole embedded to the copyGroup the result is the
> > > same .
> > > As additional info: i use a descriptorcusomizer to allow the embedded to
> > > be
> > > null.
> > >
> > > Other solutions?
> > >
> > > Stefan
> > >
> > >
> > > Andrei Ilitchev wrote:
> > > > On 2/28/2012 6:58 AM, sr_dd wrote:
> > > > > Hi,
> > > > >
> > > > > i use EL 2.3.2 and work with large object-trees. In order to specify
> > > > > the
> > > > > fetched object-tree before serialization (especially to reduce it) and
> > > > > sending to an client i use the copy functionality with AttributeGroups.
> > > > >
> > > > > First problem i had:
> > > > > In some cases em.copy(List,AttributeGroup) throws several exceptions
> > > > > resulting out of unloaded fields, i think if the same object occurs
> > > > > more
> > > > > then once in the object tree.  I work around this by first executing
> > > > > em.load(List,AttributeGroup) and afterwards using copy.
> > > > Loading the group upfront is a good idea - can't copy an object without
> > > > loading it first.
> > > > However I think that copy should still work without it. May be you could
> > > > post a simple example reproducing this problem.
> > > >
> > > > > Second Problem:
> > > > > em.copy does not set embeddables. The fields are empty even when i
> > > > > specified
> > > > > them in the CopyGroup.
> > > > The whole embedded object could be added to AttributeGroup
> > > > (group.addAttribute(embedded)).
> > > > However "splitting" the embedded object to include a subset of its
> > > > attributes into the group is not supported
> > > > (group.addAttribute(embedded.attr1)).
> > > >
> > > > > Has anybody an idea about that?
> > > > >
> > > > > regards
> > > > > Stefan
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