model.getMetadataCols().clear();
model.getAttributeCols().clear();
model.getConditionCols().clear();
model.getActionCols().clear();
RowNumberCol rnCol = null;
DescriptionCol descCol = null;
// Extract column information
for ( DynamicColumn<DTColumnConfig> column : widget.getColumns() ) {
DTColumnConfig modelCol = column.getModelColumn();