Support specification of exact class in SingleFieldIdentity
-----------------------------------------------------------
Key: JDO-630
URL: https://issues.apache.org/jira/browse/JDO-630
Project: JDO
Issue Type: Improvement
Components: api2
Reporter: Andy Jefferson
Fix For: JDO 2 maintenance release 3
When calling PersistenceManager.getObjectById() with a SingleFieldIdentity,
there seems to be no way of avoiding the following
(if the implementation decides to do so):
"It is an implementation decision whether to access the data store, if required
to determine the exact class. This will be the case of inheritance, where
multiple <code>PersistenceCapable</code> classes share the same ObjectId class."
Now when I know for sure that the targetClassName of the given
SingleFieldIdentity already denotes the correct class for the given id, how
can I avoid that additional roundtrip to the database for finding the exact
class?
It would be useful to have a way of specifying a SingleFieldIdentity to be for
the exact class specified. This could be done by addition of methods
void setExact(boolean flag);
boolean getExact();
to SingleFieldIdentity
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
