if ( columnHandle.getName( ) .equals( selectedColumnName ) )
if ( columnHandle.getName( ) != null && columnHandle.getName( ) .equals( selectedColumnName ) )
		public void modify( Object element, String property, Object value )		{			if ( element instanceof Item )			{				element = ( (Item) element ).getData( );			}			try			{				if ( COLUMN_NAME.equals( property ) )				{					String newName = UIUtil.convertToModelString( (String) value,							false );					if ( element == dummyChoice )					{						if ( newName == null )						{							return;						}						// ComputedColumn column =						// StructureFactory.createComputedColumn( );						// column.setName( newName );						// column.setExpression( "" ); //$NON-NLS-1$						// addBinding( column );					}					else					{						ComputedColumnHandle columnHandle = (ComputedColumnHandle) element;						boolean selectedNameChanged = false;						if ( columnHandle.getName( )								.equals( selectedColumnName ) )						{							selectedNameChanged = true;						}						if ( highLightName != null								&& highLightName.equals( ( (ComputedColumnHandle) element ).getName( ) )								&& !highLightName.equals( newName ) )						{							bindingTable.getTable( )									.getItem( bindingTable.getTable( )											.getSelectionIndex( ) )									.setForeground( 1,											Display.getDefault( )													.getSystemColor( SWT.COLOR_LIST_FOREGROUND ) );						}						( (ComputedColumnHandle) element ).setName( newName );						if ( selectedNameChanged )						{							selectedColumnName = newName;						}					}				}				else				{					ComputedColumnHandle bindingHandle = ( (ComputedColumnHandle) element );					if ( COLUMN_DATATYPE.equals( property ) )					{						bindingHandle.setDataType( dataTypes[( (Integer) value ).intValue( )].getName( ) );					}					else if ( COLUMN_EXPRESSION.equals( property ) )					{						if ( !( bindingHandle.getExpression( ) != null && bindingHandle.getExpression( )								.equals( (String) value ) ) )						{							bindingHandle.setExpression( (String) value );							String groupType = DEUtil.getGroupControlType( inputElement );							if ( ExpressionUtil.hasAggregation( bindingHandle.getExpression( ) ) )							{								if ( groupType.equals( DEUtil.TYPE_GROUP_GROUP ) )									bindingHandle.setAggregrateOn( ( (GroupHandle) DEUtil.getGroups( inputElement )											.get( 0 ) ).getName( ) );								else if ( groupType.equals( DEUtil.TYPE_GROUP_LISTING ) )									bindingHandle.setAggregrateOn( null );							}							if ( !ExpressionUtil.hasAggregation( bindingHandle.getExpression( ) )									|| groupType.equals( DEUtil.TYPE_GROUP_NONE ) )							{								bindingHandle.setAggregrateOn( null );							}						}					}					else if ( COLUMN_AGGREGATEON.equals( property ) )					{						if ( ( (Integer) value ).intValue( ) == 0 )							bindingHandle.setAggregrateOn( null );						else							bindingHandle.setAggregrateOn( groups[( (Integer) value ).intValue( )] );					}				}			}			catch ( SemanticException e )			{				ExceptionHandler.handle( e );			}			refreshBindingTable( );		}