tableViewer = new TableViewer( objectClassesTable );
tableViewer.setUseHashlookup( true );
tableViewer.setContentProvider( new ObjectClassSelectionDialogContentProvider( hiddenObjectClasses ) );
tableViewer.setLabelProvider( new TableDecoratingLabelProvider( new ObjectClassSelectionDialogLabelProvider(),
Activator.getDefault().getWorkbench().getDecoratorManager().getLabelDecorator() ) );
// We need to force the input to load the complete list of attribute types
tableViewer.setInput( "" ); //$NON-NLS-1$
// We also need to force the selection of the first row