package org.hibernate.envers.synchronization;
import org.hibernate.Session;
import org.hibernate.action.AfterTransactionCompletionProcess;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.event.EventSource;
/**
* Class responsible for evicting audit data entries that have been stored in the session level cache.
* This operation increases Envers performance in case of massive entity updates without clearing persistence context.
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class SessionCacheCleaner {
/**
* Schedules audit data removal from session level cache after transaction completion. The operation is performed
* regardless of commit success.
* @param session Active Hibernate session.
* @param data Audit data that shall be evicted (e.g. revision data or entity snapshot)
*/
public void scheduleAuditDataRemoval(final Session session, final Object data) {
((EventSource) session).getActionQueue().registerProcess(new AfterTransactionCompletionProcess() {
public void doAfterTransactionCompletion(boolean success, SessionImplementor session) {
((Session) session).evict(data);
}
});
}
}