protected void performCleanUp(SessionFactory sf) {
log("starting clean up phase");
FullTextSession s = Search.getFullTextSession(sf.openSession());
try {
Transaction tx = s.beginTransaction();
s.createSQLQuery("delete from book_author where book_id < :id")
.setParameter("id", initialOffset)
.executeUpdate();
s.createSQLQuery("delete from book where id < :id")
.setParameter("id", initialOffset)
.executeUpdate();
s.createSQLQuery("delete from author where id < :id")
.setParameter("id", initialOffset)
.executeUpdate();
s.purgeAll(Book.class);
s.flush();
s.flushToIndexes();
tx.commit();
} finally {
s.close();
}
}
