ColumnIO io = new ColumnIO();
                row.setForeignKey(fk, io, keySm);
            } 
        } else {
            // key is an embeddable or basic type
            FieldStrategy strategy = mapField.getStrategy(); 
            if (strategy instanceof  
                    HandlerRelationMapTableFieldStrategy) {
                HandlerRelationMapTableFieldStrategy strat = 
                    (HandlerRelationMapTableFieldStrategy) strategy;
                Column[] kcols = strat.getKeyColumns((ClassMapping)meta);