Bug 200286 [Regression] Data set editor size is not correct [07]
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
public void widgetSelected( SelectionEvent event )
			{
				if ( event.widget.getClass( ) != null )
					handleAvailabeTreeSelection( );
			}
			private void handleAvailabeTreeSelection( )
			{
				TreeItem items[] = availableDbObjectsTree.getSelection( );
				for ( int i = 0; i < items.length; i++ )
				{
					if ( items[i].getGrayed( ) )
					{
						availableDbObjectsTree.setRedraw( false );
						availableDbObjectsTree.deselectAll( );
						availableDbObjectsTree.setRedraw( true );
						availableDbObjectsTree.redraw( );
					}
				}
			}
		} );
		
		
		Group selectTableGroup = new Group( tablescomposite, SWT.FILL );
		{
			GridLayout groupLayout = new GridLayout( );
			groupLayout.numColumns = 3;
			
			groupLayout.verticalSpacing = 10;
			selectTableGroup.setLayout( groupLayout );
			GridData data = new GridData( GridData.FILL_HORIZONTAL );