surpress rawtypes warning
@@ -317,6 +317,7 @@ public abstract class Relation {
return columns().stream().filter(e->e.type() == ColumnType.STRING).toArray(StringColumn[]::new);
}
+ @SuppressWarnings("rawtypes")
public NumericColumn[] numberColumns() {
return columns().stream().filter(e->e instanceof NumericColumn<?>).toArray(NumericColumn[]::new);
}
