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

[Christopher Delahunt <christopher.delahunt@xxxxxxxxxx>]

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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