Reading the changes with in the Transaction from Toplink

Question

Typically when we work on a transaction in a SQL Session ( say from SQL*Plus), the DML changes made with in that transaction are visible to the subsequent statements in the same transaction.
How can we acheive the above functionality with a UnitOfWork? Using a query.ConformResultsInUnitOfWork helps, but only when the Toplink Cache is enabled. Can we achieve the same functionality in Toplink when the Toplink Cache is disabled.
Many Thanks in advance for any information on this.

Answer 1

Thanks for the update.
Below is the sample code. It works fine when the Toplink Cache is enabled on the object. But when it is disabled the executeQuery below fires a query to the database and a null object is returned. I disable the cache at the descriptor level using the statements
descriptor.alwaysRefreshCache();
descriptor.disableCacheHits();
myServerSession =(ServerSession) SessionManager.getManager().getSession("test100");
myServerSession.login();
myServerSession.initializeIdentityMaps();
ClientSession clientSession = myServerSession.acquireClientSession();
UnitOfWork unitOfWork = clientSession.acquireUnitOfWork();
// transaction started
unitOfWork.beginEarlyTransaction();
Case t = new Case();
t.setId("Case1");
t.setClaimNumber("ClaimNo1");
// object registered with uow, but not yet committed and not in the database
unitOfWork.registerObject(t);
Case t1 = new Case();
t1.setId("Case1");
//t1 = (Case)unitOfWork.readObject(t1);
//get the same object using the conformResultsinUnitOfwork
ReadObjectQuery roq = new ReadObjectQuery(t1.getClass());
roq.conformResultsInUnitOfWork();
roq.setSelectionCriteria(roq.getExpressionBuilder().get("id").equal("Case1"));
t1 = (Case)unitOfWork.executeQuery(roq); //returns null
//Update some attributes..
t1.setClaimNumber("ClaimNo2");
//Commit all changes
unitOfWork.commit();
The above sequence of statements works from a SQL prompt, but not from Toplink.