Examples of org.hibernate.Session.evict()

org.hibernate.Session.evict()
Remove this instance from the session cache. Changes to the instance will not be synchronized with the database. This operation cascades to associated instances if the association is mapped with cascade="evict". @param object a persistent instance @throws HibernateException

    t = s.beginTransaction();
    s.setDefaultReadOnly( true );
    DataPoint dpProxy = ( DataPoint ) s.load( DataPoint.class, new Long( dp.getId() ) );
    assertTrue( s.isReadOnly( dpProxy ) );
    assertFalse( Hibernate.isInitialized( dpProxy ) );
    s.evict( dpProxy );
    dpProxy = ( DataPoint ) s.merge( dpProxy );
    assertTrue( s.isReadOnly( dpProxy ) );
    assertFalse( Hibernate.isInitialized( dpProxy ) );
    dpProxy = ( DataPoint ) s.merge( dp );
    assertTrue( s.isReadOnly( dpProxy ) );

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    assertFalse( Hibernate.isInitialized( dpProxy ) );
    dpProxy = ( DataPoint ) s.merge( dp );
    assertTrue( s.isReadOnly( dpProxy ) );
    assertTrue( Hibernate.isInitialized( dpProxy ) );
    assertEquals( "description", dpProxy.getDescription() );
    s.evict( dpProxy );
    dpProxy = ( DataPoint ) s.merge( dpProxy );
    assertTrue( s.isReadOnly( dpProxy ) );
    assertTrue( Hibernate.isInitialized( dpProxy ) );
    assertEquals( "description", dpProxy.getDescription() );
    dpProxy.setDescription( null );

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    s.beginTransaction();
    // load the superclass proxy.
    Person pLoad = ( Person ) s.load( Person.class, new Long( e.getId() ) );
    assertTrue( pLoad instanceof HibernateProxy);
    // evict the proxy
    s.evict( pLoad );
    Employee pGet = ( Employee ) s.get( Person.class, new Long( e.getId() ));
    Employee pQuery = ( Employee ) s.createQuery( "from Person where id = :id" )
        .setLong( "id", e.getId() )
        .uniqueResult();
    Employee pCriteria = ( Employee ) s.createCriteria( Person.class )

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    tx = s.beginTransaction();
    mouth = (Mouth) s.get( Mouth.class, mouth.id );
    assertNotNull( mouth );
    assertEquals( 1, mouth.teeth.size() );
    tooth = mouth.teeth.iterator().next();
    s.evict( mouth );
    assertFalse( s.contains( tooth ) );
    tx.commit();
    s.close();


    s = openSession();

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    dp = ( DataPoint ) s.load( DataPoint.class, dp.getId() );
    assertFalse( Hibernate.isInitialized( dp ) );
    assertFalse( s.isReadOnly( dp ) );
    s.setReadOnly( dp, true );
    assertTrue( s.isReadOnly( dp ) );
    s.evict( dp );
    s.refresh( dp );
    assertFalse( Hibernate.isInitialized( dp ) );
    assertFalse( s.isReadOnly( dp ) );
    dp.setDescription( "changed" );
    assertEquals( "changed", dp.getDescription() );

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

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    DataPoint dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpOrig.getId() ) );
    assertTrue( dp instanceof HibernateProxy );
    assertFalse( Hibernate.isInitialized( dp ) );
    checkReadOnly( s, dp, false );
    assertTrue( s.contains( dp ) );
    s.evict( dp );
    assertFalse( s.contains( dp ) );
    assertNull( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getSession() );


    try {
       s.isReadOnly( dp );

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    s.beginTransaction();
    DataPoint dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpOrig.getId() ) );
    assertTrue( dp instanceof HibernateProxy );
    assertFalse( Hibernate.isInitialized( dp ) );
    checkReadOnly( s, dp, false );
    s.evict( dp );
    assertFalse( s.contains( dp ) );
    assertNull( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getSession() );
    try {
       ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().isReadOnly();
      fail( "should have failed because proxy was detached" );

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    DataPoint dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpOrig.getId() ) );
    assertTrue( dp instanceof HibernateProxy );
    assertFalse( Hibernate.isInitialized( dp ) );
    checkReadOnly( s, dp, false );
    assertTrue( s.contains( dp ) );
    s.evict( dp );
    assertFalse( s.contains( dp ) );
    assertNull( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getSession() );


    try {
       s.setReadOnly( dp, true );

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    s.beginTransaction();
    DataPoint dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpOrig.getId() ) );
    assertTrue( dp instanceof HibernateProxy );
    assertFalse( Hibernate.isInitialized( dp ) );
    checkReadOnly( s, dp, false );
    s.evict( dp );
    assertFalse( s.contains( dp ) );
    assertNull( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getSession() );
    try {
       ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().setReadOnly( true );
      fail( "should have failed because proxy was detached" );

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