Examples of org.hibernate.Session.load()

org.hibernate.Session.load()
Return the persistent instance of the given entity class with the given identifier, obtaining the specified lock mode, assuming the instance exists. @param theClass a persistent class @param id a valid identifier of an existing persistent instance of the class @param lockMode the lock level @return the persistent instance or proxy @throws HibernateException

    assertUpdateCount( 0 );
    clearCounts();


    s = openSession();
    s.beginTransaction();
    dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpId ) );
    assertFalse( "was initialized", Hibernate.isInitialized( dp ) );
    s.setReadOnly( dp, true );
    assertFalse( "was initialized during setReadOnly", Hibernate.isInitialized( dp ) );
    dp.setDescription( "changed" );
    assertTrue( "was not initialized during mod", Hibernate.isInitialized( dp ) );

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    PurchaseRecord toLoad = new PurchaseRecord();
    
    s = openSession();
    t = s.beginTransaction();


    s.load(toLoad, id);
    
    t.commit();
    s.close();
    
    // show that the correct timestamp and ids were loaded

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    Long aid = a.getId();
    Long bid = b.getId();


    s = openSession();
    t = s.beginTransaction();
    b = ( Bid ) s.load( Bid.class, bid );
    assertFalse( Hibernate.isInitialized( b ) );
    a = ( Auction ) s.get( Auction.class, aid );
    assertFalse( Hibernate.isInitialized( a.getBids() ) );
    assertTrue( Hibernate.isInitialized( a.getSuccessfulBid() ) );
    assertSame( a.getBids().iterator().next(), b );

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    t.commit();
    s.close();


    s = openSession();
    t = s.beginTransaction();
    b = ( Bid ) s.load( Bid.class, bid );
    assertFalse( Hibernate.isInitialized( b ) );
    a = ( Auction ) s.createQuery( "from Auction a left join fetch a.bids" ).uniqueResult();
    assertTrue( Hibernate.isInitialized( b ) );
    assertTrue( Hibernate.isInitialized( a.getBids() ) );
    assertSame( b, a.getSuccessfulBid() );

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    t.commit();
    s.close();


    s = openSession();
    t = s.beginTransaction();
    b = ( Bid ) s.load( Bid.class, bid );
    a = ( Auction ) s.load( Auction.class, aid );
    assertFalse( Hibernate.isInitialized( b ) );
    assertFalse( Hibernate.isInitialized( a ) );
    s.createQuery( "from Auction a left join fetch a.successfulBid" ).list();
    assertTrue( Hibernate.isInitialized( b ) );

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    s.close();


    s = openSession();
    t = s.beginTransaction();
    b = ( Bid ) s.load( Bid.class, bid );
    a = ( Auction ) s.load( Auction.class, aid );
    assertFalse( Hibernate.isInitialized( b ) );
    assertFalse( Hibernate.isInitialized( a ) );
    s.createQuery( "from Auction a left join fetch a.successfulBid" ).list();
    assertTrue( Hibernate.isInitialized( b ) );
    assertTrue( Hibernate.isInitialized( a ) );

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    t.commit();
    s.close();


    s = openSession();
    t = s.beginTransaction();
    b = ( Bid ) s.load( Bid.class, bid );
    a = ( Auction ) s.load( Auction.class, aid );
    assertFalse( Hibernate.isInitialized( b ) );
    assertFalse( Hibernate.isInitialized( a ) );
    assertSame( s.get( Bid.class, bid ), b );
    assertTrue( Hibernate.isInitialized( b ) );

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    s.close();


    s = openSession();
    t = s.beginTransaction();
    b = ( Bid ) s.load( Bid.class, bid );
    a = ( Auction ) s.load( Auction.class, aid );
    assertFalse( Hibernate.isInitialized( b ) );
    assertFalse( Hibernate.isInitialized( a ) );
    assertSame( s.get( Bid.class, bid ), b );
    assertTrue( Hibernate.isInitialized( b ) );
    assertSame( s.get( Auction.class, aid ), a );

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    s = openSession();
    s.setCacheMode(CacheMode.IGNORE);
    t = s.beginTransaction();
    s.setDefaultReadOnly( true );
    dp = ( DataPoint ) s.load( DataPoint.class, dp.getId() );
    assertTrue( s.isReadOnly( dp ) );
    assertFalse( Hibernate.isInitialized( dp ) );
    s.refresh( dp );
    assertFalse( Hibernate.isInitialized( dp ) );
    assertTrue( s.isReadOnly( dp ) );

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    s = openSession();
    s.setCacheMode(CacheMode.IGNORE);
    t = s.beginTransaction();
    s.setDefaultReadOnly( true );
    dp = ( DataPoint ) s.load( DataPoint.class, dp.getId() );
    assertFalse( Hibernate.isInitialized( dp ) );
    assertTrue( s.isReadOnly( dp ) );
    s.evict( dp );
    s.refresh( dp );
    assertFalse( Hibernate.isInitialized( dp ) );

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