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void flush();

        

void setFlushMode(javax.persistence.FlushModeType);

javax.persistence.FlushModeType getFlushMode();

        

em.persist(author);

em.getTransaction().begin();

em.getTransaction().commit();


//change DB state out-of-band from the cache

em.getTransaction().begin();

String newName="foo";

int count=em.createQuery(

        "update jpaAuthor a set a.firstName=:name where a.id=:id")

    .setParameter("id", author.getId())

    .setParameter("name", newName)

    .executeUpdate();

em.getTransaction().commit();

assertEquals("unexpected count", 1, count);


//object state becomes stale when DB changed out-of-band

logger.debug("author.firstName={}", author.getFirstName());

assertNotEquals("unexpected name", newName, author.getFirstName());


//get the cached object back in sync

logger.debug("calling refresh");

em.refresh(author);

logger.debug("author.firstName=" + author.getFirstName());

assertEquals("unexpected name", newName, author.getFirstName());

-author.firstName=dr
-calling refresh
-author.firstName=foo
        

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