Investigating Update outside transition 2lc

[dreab8]

bulk query execution inside a Transaction

1. cacheAccess.lockRegion;
2. cacheAccess.removeAll;
3. schedule after transaction opertaion (cacheAccess.unlockRegion)
4. SQL query execution
5. after transaction triggers cacheAccess.unlockRegion

what happens now for a bulk native query executed ouside a Transaction :

1. cacheAccess.lockRegion;
2. cacheAccess.removeAll;
3. schedule after transaction opertaion (cacheAccess.unlockRegion)
4. SQL query execution

bulk native query update execution outside Transaction with #8849 (comment)

1. cacheAccess.lockRegion;
2. cacheAccess.removeAll;
3. cacheAccess.unlockRegion
4. SQL query execution

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[sebersole]

We talked about this approach as an alternative to https://hibernate.atlassian.net/browse/HHH-18546

@yrodiere had some concerns with the approach in regards to some things done in Hibernate Search. Let's see if he can demonstrate that and we should incorporate his findings, if so.

[yrodiere]

We talked about this approach as an alternative to https://hibernate.atlassian.net/browse/HHH-18546

@yrodiere had some concerns with the approach in regards to some things done in Hibernate Search. Let's see if he can demonstrate that and we should incorporate his findings, if so.

My concern regarding Hibernate Search was if we generalize the approach of executing "after transaction" operations immediately, since Hibernate Search does that itself. If we do that (which we aren't in this PR), then we'll just have to run Hibernate Search integration tests against the Hibernate ORM snapshots to see if tests still pass, and improvise.

Regarding this patch specifically, I'm discussing it with Andrea right now (though just to give this another pair of eyeballs; you sure know what this implies better than I do).

[dreab8]

as suggested by @sebersole probably better to provide a logging in case the operation is executed outside a TX so something like

 if ( !session.isEventSource() ) {
            action.getAfterTransactionCompletionProcess().doAfterTransactionCompletion( true, session );
        }
        else if ( ! session.isTransactionInProgress() ) {
            LOGGING....
            action.getAfterTransactionCompletionProcess().doAfterTransactionCompletion( true, session );
        }
        else {
            session.asEventSource().getActionQueue().addAction( action );
        }

[beikov]

Just for reference, I believe this was fixed via #9812