Examples of org.hibernate.Session.refresh()

org.hibernate.Session.refresh()
Re-read the state of the given instance from the underlying database. It is inadvisable to use this to implement long-running sessions that span many business tasks. This method is, however, useful in certain special circumstances. For example
- where a database trigger alters the object state upon insert or update
- after executing direct SQL (eg. a mass update) in the same session
- after inserting a Blob or Clob
@param object a persistent or detached instance @throws HibernateException

    customer.setName( "Steve" );
    session = openSession();
    session.beginTransaction();
    session.update( customer );
    session.flush();
    session.refresh( customer );
    assertEquals( "name not updated", "Steve", customer.getName() );
    session.getTransaction().commit();
    session.close();


    // Test querying

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    dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
    s.setReadOnly( dp, true );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.refresh( dp );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    t.commit();

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    dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
    s.setReadOnly( dp, true );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.refresh( dp );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    t.commit();

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    s = openSession();
    t = s.beginTransaction();
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.refresh( dp );
    assertEquals( "original", dp.getDescription() );
    assertFalse( s.isReadOnly( dp ) );
    s.setReadOnly( dp, true );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );

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    assertFalse( s.isReadOnly( dp ) );
    s.setReadOnly( dp, true );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.evict( dp );
    s.refresh( dp );
    assertEquals( "original", dp.getDescription() );
    assertFalse( s.isReadOnly( dp ) );
    t.commit();


    assertInsertCount( 0 );

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    dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
    assertTrue( s.isReadOnly( dp ) );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.refresh( dp );
    assertTrue( s.isReadOnly( dp ) );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.setDefaultReadOnly( false );

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    assertTrue( s.isReadOnly( dp ) );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.setDefaultReadOnly( false );
    s.refresh( dp );
    assertTrue( s.isReadOnly( dp ) );
    assertEquals( "original", dp.getDescription() );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    t.commit();

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    s.setCacheMode(CacheMode.IGNORE);
    t = s.beginTransaction();
    s.setDefaultReadOnly( false );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.refresh( dp );
    assertEquals( "original", dp.getDescription() );
    assertFalse( s.isReadOnly( dp ) );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.evict( dp );

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    assertEquals( "original", dp.getDescription() );
    assertFalse( s.isReadOnly( dp ) );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.evict( dp );
    s.refresh( dp );
    assertEquals( "original", dp.getDescription() );
    assertFalse( s.isReadOnly( dp ) );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.setDefaultReadOnly( true );

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    assertFalse( s.isReadOnly( dp ) );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );
    s.setDefaultReadOnly( true );
    s.evict( dp );
    s.refresh( dp );
    assertEquals( "original", dp.getDescription() );
    assertTrue( s.isReadOnly( dp ) );
    dp.setDescription( "changed" );
    t.commit();

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