amaliujia commented on a change in pull request #12110:
URL: https://github.com/apache/beam/pull/12110#discussion_r446681312
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File path:
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/transform/BeamBuiltinAggregations.java
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@@ -393,29 +393,52 @@ public Long extractOutput(Long accum) {
}
}
- static class BitAnd<T extends Number> extends CombineFn<T, Long, Long> {
+ static class BitAnd<T extends Number> extends CombineFn<T, BitAnd.Accum,
Long> {
+ public static class Accum {
+ long val = -1L;
+ boolean isEmpty = true;
+ boolean seenNull = false;
+ }
+
@Override
- public Long createAccumulator() {
- return -1L;
Review comment:
why not still use Long, why change to Accum class?
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