Jackie-Jiang commented on code in PR #9086:
URL: https://github.com/apache/pinot/pull/9086#discussion_r929366977
##########
pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/CountAggregationFunction.java:
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@@ -30,34 +31,48 @@
import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder;
import org.apache.pinot.segment.spi.AggregationFunctionType;
import
org.apache.pinot.segment.spi.index.startree.AggregationFunctionColumnPair;
+import org.roaringbitmap.RoaringBitmap;
-public class CountAggregationFunction implements AggregationFunction<Long,
Long> {
- private static final String COLUMN_NAME = "count_star";
- private static final String RESULT_COLUMN_NAME = "count(*)";
+public class CountAggregationFunction extends
BaseSingleInputAggregationFunction<Long, Long> {
private static final double DEFAULT_INITIAL_VALUE = 0.0;
// Special expression used by star-tree to pass in BlockValSet
private static final ExpressionContext STAR_TREE_COUNT_STAR_EXPRESSION =
ExpressionContext.forIdentifier(AggregationFunctionColumnPair.STAR);
+ private final String _columnName;
+ private final String _resultColumnName;
+ private final boolean _nullHandlingEnabled;
+
+ public CountAggregationFunction(ExpressionContext expression, boolean
nullHandlingEnabled) {
+ super(expression);
+ String expStr = expression.toString();
Review Comment:
Sorry my bad. What I meant is when null handling is **disabled**, we can set
it to `*`
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