luoyuxia commented on code in PR #19884:
URL: https://github.com/apache/flink/pull/19884#discussion_r911905289
##########
flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/aggregate/FirstValueWithRetractAggFunction.java:
##########
@@ -131,16 +143,27 @@ public void
accumulate(FirstValueWithRetractAccumulator<T> acc, Object value) th
}
orderList.add(order);
acc.valueToOrderMap.put(v, orderList);
- accumulate(acc, v, order);
+ accumulate(acc, v, order, ignoreNull);
}
}
- @SuppressWarnings("unchecked")
public void accumulate(FirstValueWithRetractAccumulator<T> acc, Object
value, Long order)
throws Exception {
- if (value != null) {
+ // default is not ignore null
+ // todo: what's the default value? default ignore null, following
legacy code
+ accumulate(acc, value, order, true);
+ }
+
+ @SuppressWarnings("unchecked")
+ public void accumulate(
+ FirstValueWithRetractAccumulator<T> acc, Object value, Long order,
boolean ignoreNull)
Review Comment:
may call accumulate(acc, null, null, false);
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