On 08/08/2013 11:21 AM, Jeremy Whiting wrote: > Hi, > I am looking for feedback on changes to provide the ability for work > to be completed in a currently running transaction. For example when a > TableGenerator or SequenceGenerator is being used for generating unique > ids. The statements that select then update the db are executed in a > separate transaction. > > There is a jira for this feature. > > https://hibernate.atlassian.net/browse/HHH-8429 > > Attached to the jira is a diagram. See this link > https://hibernate.atlassian.net/secure/attachment/19534/hibernate-class-structure-allowing-same-tx-support.png > > This diagram shows what I currently have implemented. It shows the > existing classes and the new classes shaded in light blue. The methods > on a new class IsolationAware show how I've re-jigged most the > implementation from JtaTransaction to it's new ancestor IsolationAware. > A new concrete implementation of IsolationDelegate will negotiate the > work to be executed in the same running transaction. > The structure splits up the factory/transaction/delegate classes into > two groups. "same transaction" and "separate transaction". This has only > been done for JtaTransaction and the same will probably be necessary for > CMTTransaction as it also uses a separate transaction to complete work. > That has been left out to keep the diagram simple.
Your talking about making code changes here but I'm not following exactly how this new features works. I added my questions about this to the jira. When you respond there or here, could you please also include how this new feature depends on isolation level (if it requires a certain isolation level). > > The option of using aggregation at the point where implementers of > TransactionImplementor are instantiated has been considered. Before too > much effort is expended coding I wondered what others thought is the > preferred way to implement this feature. > > Jeremy > > _______________________________________________ > hibernate-dev mailing list > hibernate-dev@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hibernate-dev > _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
