Re: [eclipselink-users] JPA @Embeddable, containing foreign key, "must n

[janne postilista <jannepostilistat@xxxxxxxxx>]

voted

On Tue, Oct 26, 2010 at 3:49 PM, Christopher Delahunt
<christopher.delahunt@xxxxxxxxxx> wrote:
> This looks like the issue for bug
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=304868
>
> Please vote for it to have it fixed, and I believe it describes a
> workaround.
>
> Best Regards,
> Chris
>
> On 26/10/2010 2:32 AM, janne postilista wrote:
>
> Found one similar posting to mine, but no resolution for it:
> http://groups.google.com/group/javaee6-codecamp/browse_thread/thread/721889032219d008/e9ed7a37d37b63af?#e9ed7a37d37b63af
>
> The error message seems to imply that Address ends up in the shared
> (L2?) cache even when I try to define that L2 should not be used at
> all with eclipselink.cache.shared.default=false. Why does this
> happen...?
>
> The same @Embeddable class is used in other entities as well, such as
> (again, imaginary example)
>
> @Entity
> Warehouse {
>   @Embedded
>   private Address address
> }
>
>
> On Tue, Oct 26, 2010 at 9:18 AM, janne postilista
> <jannepostilistat@xxxxxxxxx> wrote:
>
>
> Seems this is related to the fact that I have turned eclipselink L2 cache
> off:
>
> persistence.xml:
>            <property name="eclipselink.cache.shared.default" value="false"/>
>
> when I remove this setting, the mapping works fine.
>
> What do I need to do to make this work when
> eclipselink.cache.shared.default=false (or is it possible)?
>
>
> On Mon, Oct 25, 2010 at 5:48 PM, janne postilista
> <jannepostilistat@xxxxxxxxx> wrote:
>
>
> I'm trying to map a case like
>
> @Entity
> Employer {
>   @Embedded
>   private Address address
> }
>
>
> @Embeddable
> Address {
>   @ManyToOne
>   @JoinColumn(name="fofofof");
>   private City city
> }
>
> @Entity
> City
>
> (not my actual setup, but the same kind of structure)
>
> When I try to use this, I get error
>
> Exception [EclipseLink-195] (Eclipse Persistence Services -
> 2.0.1.v20100213-r6600):
> org.eclipse.persistence.exceptions.DescriptorException
> Exception Description: The shared class com.zzz.Address must not
> reference the isolated class com.zzz.City.
> Mapping: org.eclipse.persistence.mappings.OneToOneMapping[city]
> Descriptor: RelationalDescriptor(com.zzz.Address -->
> [DatabaseTable(EMPLOYER)])
>
> Is there anything I can do to make my Embeddable object have link to
> another table?
>
>
>
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