github-advanced-security[bot] commented on code in PR #15365:
URL: https://github.com/apache/druid/pull/15365#discussion_r1449129744
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processing/src/main/java/org/apache/druid/query/rowsandcols/semantic/DefaultFramedOnHeapAggregatable.java:
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@@ -85,7 +87,305 @@
}
}
} else {
- throw new UOE("RANGE peer groupings are unsupported");
+ return computeGroupAggregates(aggFactories, frame);
+ }
+ }
+
+ /**
+ * Handles population/creation of new RAC columns.
+ */
+ static class ResultPopulator
+ {
+
+ private final Object[][] results;
+ private final AggregatorFactory[] aggFactories;
+
+ public ResultPopulator(AggregatorFactory[] aggFactories, int numRows)
+ {
+ this.aggFactories = aggFactories;
+ results = new Object[aggFactories.length][numRows];
+ }
+
+ public void write(Interval outputRows, AggIntervalCursor aggCursor)
+ {
+ for (int col = 0; col < aggFactories.length; col++) {
+ Arrays.fill(results[col], outputRows.a, outputRows.b,
aggCursor.getValue(col));
+ }
+ }
+
+ public void appendTo(AppendableRowsAndColumns rac)
+ {
+ for (int i = 0; i < aggFactories.length; ++i) {
+ rac.addColumn(
+ aggFactories[i].getName(),
+ new ObjectArrayColumn(results[i],
aggFactories[i].getIntermediateType())
+ );
+ }
+ }
+ }
+
+ private RowsAndColumns computeGroupAggregates(
+ AggregatorFactory[] aggFactories,
+ WindowFrame frame)
+ {
+ Iterable<AggInterval> groupIterator = buildGroupIteratorFor(rac, frame);
+ ResultPopulator resultRac = new ResultPopulator(aggFactories,
rac.numRows());
+ AggIntervalCursor aggCursor = new AggIntervalCursor(rac, aggFactories);
+ for (AggInterval aggInterval : groupIterator) {
+ aggCursor.moveTo(aggInterval.inputRows);
+ resultRac.write(aggInterval.outputRows, aggCursor);
+ }
+ resultRac.appendTo(rac);
+ return rac;
+ }
+
+ public static Iterable<AggInterval>
buildGroupIteratorFor(AppendableRowsAndColumns rac, WindowFrame frame)
+ {
+ int[] groupBoundaries =
ClusteredGroupPartitioner.fromRAC(rac).computeBoundaries(frame.getOrderByColNames());
+ return new GroupIteratorForWindowFrame(rac, frame, groupBoundaries);
+ }
+
+ static class GroupIteratorForWindowFrame implements Iterable<AggInterval>
+ {
+ private final int[] groupBoundaries;
+ private final int numGroups;
+ // lower inclusive
+ private final int lowerOffset;
+ // upper exclusive
+ private final int upperOffset;
+
+ public GroupIteratorForWindowFrame(RowsAndColumns rac, WindowFrame frame,
int[] groupBoundaries)
Review Comment:
## Useless parameter
The parameter 'rac' is never used.
[Show more
details](https://github.com/apache/druid/security/code-scanning/6441)
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