Examples of org.hibernate.ScrollableResults.scroll()

org.hibernate.ScrollableResults.scroll()
Scroll an arbitrary number of locations @param i a positive (forward) or negative (backward) number of rows @return true if there is a result at the new location

      Object f1 = iter.get(0);
      iter.next();
      assertTrue( f1!=null && iter.get(0)==f2 );
      iter.getInteger(1);


      assertTrue( !iter.scroll(100) );
      assertTrue( iter.first() );
      assertTrue( iter.scroll(3) );
      Object f4 = iter.get(0);
      assertTrue( f4!=null );
      assertTrue( !iter.next() );

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      assertTrue( f1!=null && iter.get(0)==f2 );
      iter.getInteger(1);


      assertTrue( !iter.scroll(100) );
      assertTrue( iter.first() );
      assertTrue( iter.scroll(3) );
      Object f4 = iter.get(0);
      assertTrue( f4!=null );
      assertTrue( !iter.next() );
      assertTrue( iter.first() );
      assertTrue( iter.get(0)==f1 );

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      txn = s.beginTransaction();
      query = s.createQuery("select f, f.integer from Foo f");
      assertTrue( query.getReturnTypes().length==2 );
      iter = query.scroll();
      assertTrue( iter.next() );
      assertTrue( iter.scroll(1) );
      f2 = (FooProxy) iter.get()[0];
      assertTrue( f2!=null );
      assertTrue( f2.getString()!=null  && f2.getComponent().getImportantDates().length > 0 );
      assertTrue( iter.scroll(-1) );
      f1 = iter.get(0);

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      assertTrue( iter.next() );
      assertTrue( iter.scroll(1) );
      f2 = (FooProxy) iter.get()[0];
      assertTrue( f2!=null );
      assertTrue( f2.getString()!=null  && f2.getComponent().getImportantDates().length > 0 );
      assertTrue( iter.scroll(-1) );
      f1 = iter.get(0);
      iter.next();
      assertTrue( f1!=null && iter.get(0)==f2 );
      iter.getInteger(1);

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      f1 = iter.get(0);
      iter.next();
      assertTrue( f1!=null && iter.get(0)==f2 );
      iter.getInteger(1);


      assertTrue( !iter.scroll(100) );
      assertTrue( iter.first() );
      assertTrue( iter.scroll(3) );
      f4 = iter.get(0);
      assertTrue( f4!=null );
      assertTrue( !iter.next() );

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      assertTrue( f1!=null && iter.get(0)==f2 );
      iter.getInteger(1);


      assertTrue( !iter.scroll(100) );
      assertTrue( iter.first() );
      assertTrue( iter.scroll(3) );
      f4 = iter.get(0);
      assertTrue( f4!=null );
      assertTrue( !iter.next() );
      assertTrue( iter.first() );
      assertTrue( iter.get(0)==f1 );

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    assertFalse( results.isFirst() );
    assertFalse( results.isLast() );
    assertFalse( results.next() );


    for ( int i=1; i<3; i++ ) {
      assertFalse( results.scroll( i ) );
      assertFalse( results.isFirst() );
      assertFalse( results.isLast() );


      assertFalse( results.scroll( - i ) );
      assertFalse( results.isFirst() );

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    for ( int i=1; i<3; i++ ) {
      assertFalse( results.scroll( i ) );
      assertFalse( results.isFirst() );
      assertFalse( results.isLast() );


      assertFalse( results.scroll( - i ) );
      assertFalse( results.isFirst() );
      assertFalse( results.isLast() );


      assertFalse( results.setRowNumber( i ) );
      assertFalse( results.isFirst() );

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      s.save( new Bar() );
      Query query = s.createQuery("select f, f.integer from Foo f");
      assertTrue( query.getReturnTypes().length==2 );
      ScrollableResults iter = query.scroll();
      assertTrue( iter.next() );
      assertTrue( iter.scroll(1) );
      FooProxy f2 = (FooProxy) iter.get()[0];
      assertTrue( f2!=null );
      assertTrue( iter.scroll(-1) );
      Object f1 = iter.get(0);
      iter.next();

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    result.beforeFirst();
    assertEquals( true, result.next() );
    assertTrue( result.isFirst() );
    assertTrue( result.scroll( 1 ) );
    assertTrue( result.isLast() );
    assertFalse( result.scroll( 1 ) );
    result.beforeFirst();
    while ( result.next() ) {
      s.delete( result.get()[0] );
    }
    for (Object element : s.createQuery( "from java.lang.Object" ).list()) s.delete( element );

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