[hibernate-dev] Native-SQL queries and flushing

We will need to make a slight change to execution of native SQL queries in order to pass the JPA 2.1 TCK. The new TCK tests that execution of a native SQL query does an "auto flush". The problem with this is that, unlike with HQL/JPQL, we do not know the tables affected by a native SQL query (and doing so would be extremely difficult and not worth the effort). Historically, Hibernate users would have relied on the addSynchronizedQuerySpace/addSynchronizedEntityName methods of org.hibernate.SQLQuery to indicate the tables needing flushed. JPA however has no such notion. As I see it, I think the change here needs to be to implicitly perform a *full flush* when a JPA native SQL query is executed where the wrapped/underlying org.hibernate.SQLQuery does not define any "query spaces"; a partial flush just is not possible in that case. That allows us to pass the TCK, but still allows users to set "query spaces" if they wish to do the more efficient partial auto-flush. Any alternate suggestions?