Let's be clear here, if you have
public class Base
{
private long id;
public long getId()
{
return id;
}
public void setId(long id)
{
this.id = id;
}
}
@PersistenceCapable
public class Sub extends Base
{
@PrimaryKey
@Persistent
public long getId()
{
return super.getId();
}
public void setId(long id)
{
super.setId(id);
}
}
and persist a Sub, then ***DataNucleus*** will *not* insist that the
superclass is persistable. This is based on all DN datastore plugins
except GAE/J. If GAE/J does cause this then it is a bug in that plugin
and raise a bug on them, with stack trace and exception etc etc.
Also to be clear, the JDO and JPA specs do *not* allow magical
persistence of a field of a non-persistable superclass, unless you do
an override in a subclass like what you did there (to make it a
persistable property). You will *always* need that override.
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