richardstartin commented on a change in pull request #7916:
URL: https://github.com/apache/pinot/pull/7916#discussion_r785080162
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/plan/AggregationPlanNode.java
##########
@@ -154,4 +129,168 @@ private static boolean
isFitForDictionaryBasedPlan(AggregationFunction[] aggrega
}
return true;
}
+
+ /**
+ * Build a FilteredAggregationOperator given the parameters.
+ * @param mainPredicateFilterOperator Filter operator corresponding to the
main predicate
+ * @param mainTransformOperator Transform operator corresponding to the main
predicate
+ * @param aggregationFunctions Aggregation functions in the query
+ * @param numTotalDocs Number of total docs
+ */
+ private BaseOperator<IntermediateResultsBlock>
buildOperatorForFilteredAggregations(
+ BaseFilterOperator mainPredicateFilterOperator,
+ TransformOperator mainTransformOperator,
+ AggregationFunction[] aggregationFunctions, int numTotalDocs) {
+ Map<ExpressionContext, Pair<List<AggregationFunction>, TransformOperator>>
expressionContextToAggFuncsMap =
+ new HashMap<>();
+ List<AggregationFunction> nonFilteredAggregationFunctions = new
ArrayList<>();
+
+ // For each aggregation function, check if the aggregation function is a
filtered agg.
+ // If it is, populate the corresponding filter operator and corresponding
transform operator
+ for (AggregationFunction aggregationFunction : aggregationFunctions) {
+ if (aggregationFunction instanceof FilterableAggregationFunction) {
+ FilterableAggregationFunction filterableAggregationFunction =
+ (FilterableAggregationFunction) aggregationFunction;
+
+ ExpressionContext currentFilterExpression =
filterableAggregationFunction
+ .getAssociatedExpressionContext();
+
+ if
(expressionContextToAggFuncsMap.containsKey(currentFilterExpression)) {
Review comment:
It’s better to get then null check, otherwise the key gets hashed and
equality-checked twice.
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