List<AbstractType<?>> newTypes = new ArrayList<AbstractType<?>>(((CompositeType) cfm.comparator).types);
newTypes.set(name.position, validator.getType());
cfm.comparator = CompositeType.getInstance(newTypes);
break;
case VALUE_ALIAS:
cfm.defaultValidator(validator.getType());
break;
case COLUMN_METADATA:
ColumnDefinition column = cfm.getColumnDefinition(columnName.key);
column.setValidator(validator.getType());
break;