mikemccand commented on code in PR #12547:
URL: https://github.com/apache/lucene/pull/12547#discussion_r1478386039
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lucene/facet/src/java/org/apache/lucene/facet/taxonomy/FloatTaxonomyFacets.java:
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@@ -37,33 +37,43 @@ abstract class FloatTaxonomyFacets extends TaxonomyFacets {
// TODO: also use native hash map for sparse collection, like
IntTaxonomyFacets
- /** Aggregation function used for combining values. */
- final AssociationAggregationFunction aggregationFunction;
+ /** Aggregation functions used for combining values. */
+ final List<AssociationAggregationFunction> aggregationFunctions;
/** Per-ordinal value. */
- float[] values;
+ float[][] values;
+
+ @Override
+ boolean hasValues() {
+ return values != null;
+ }
+
+ void initializeValueCounters() {
+ if (values == null) {
+ values = new float[aggregationFunctions.size()][taxoReader.getSize()];
Review Comment:
Maybe open a spinoff to implement sparse values for `FloatTaxonomyFacets`?
But let's not block this otherwise great change?
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