Method to generate the method "dnCopyKeyFieldsFromObjectId" using ASM.
For datastore/nondurable identity this is
public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
{
}
and for SingleFieldIdentity it is
public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
{
if (fc == null)
throw new IllegalArgumentException("ObjectIdFieldConsumer is null");
if (!(oid instanceof YYYIdentity))
throw new ClassCastException("oid is not instanceof YYYIdentity");
YYYIdentity o = (YYYIdentity) oid;
fc.storeYYYField(1, o.getKey());
}
and for user-defined primary keys
public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
{
if (fc == null)
throw new IllegalArgumentException("ObjectIdFieldConsumer is null");
if (!(oid instanceof UserPrimaryKey))
throw new ClassCastException("oid is not instanceof mydomain.UserPrimaryKey");
UserPrimaryKey o = (UserPrimaryKey) oid;
try
{
fc.storeYYYField(1, o.id);
fc.storeZZZField(2, o.name);
}
catch(Exception e) {}
}
and for CompoundIdentity
public void dnCopyKeyFieldsFromObjectId(Persistable.ObjectIdFieldConsumer fc, Object oid)
{
if (fc == null)
throw new IllegalArgumentException("ObjectIdFieldConsumer is null");
if (!(oid instanceof UserPrimaryKey))
throw new ClassCastException("oid is not instanceof mydomain.UserPrimaryKey");
UserPrimaryKey o = (UserPrimaryKey) oid;
try
{
fc.storeYYYField(1, o.id);
fc.storeZZZField(2, dnGetPersistenceManager().getObjectById(o.zzz, false));
}
catch (Exception e) {}
}
(the try-catch is for cases where we set the fields with reflection and it can throw an exception).
There are some differences for fields .v. properties and also if fields in the PK are private.