siddharthteotia commented on code in PR #9406:
URL: https://github.com/apache/pinot/pull/9406#discussion_r972550066
##########
pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/operator/SortOperator.java:
##########
@@ -129,14 +124,44 @@ private void consumeInputBlocks() {
}
}
- private List<OrderByExpressionContext>
toOrderByExpressions(List<RexExpression> collationKeys,
- List<RelFieldCollation.Direction> collationDirections) {
- List<OrderByExpressionContext> orderByExpressionContextList = new
ArrayList<>(collationKeys.size());
- for (int i = 0; i < collationKeys.size(); i++) {
- orderByExpressionContextList.add(new
OrderByExpressionContext(ExpressionContext.forIdentifier(
- _dataSchema.getColumnName(((RexExpression.InputRef)
collationKeys.get(i)).getIndex())),
- !collationDirections.get(i).isDescending()));
+ private static class SortComparator implements Comparator<Object[]> {
+ private final int _size;
+ private final int[] _valueIndices;
+ private final int[] _multipliers;
+ private final boolean[] _useDoubleComparison;
+
+ public SortComparator(List<RexExpression> collationKeys,
List<RelFieldCollation.Direction> collationDirections,
+ DataSchema dataSchema, boolean isNullHandlingEnabled) {
+ DataSchema.ColumnDataType[] columnDataTypes =
dataSchema.getColumnDataTypes();
+ _size = collationKeys.size();
+ _valueIndices = new int[_size];
+ _multipliers = new int[_size];
+ _useDoubleComparison = new boolean[_size];
+ for (int i = 0; i < _size; i++) {
+ _valueIndices[i] = ((RexExpression.InputRef)
collationKeys.get(i)).getIndex();
+ _multipliers[i] = collationDirections.get(i).isDescending() ? 1 : -1;
+ _useDoubleComparison[i] = columnDataTypes[_valueIndices[i]].isNumber();
+ }
+ }
+
+ @Override
+ public int compare(Object[] o1, Object[] o2) {
+ for (int i = 0; i < _size; i++) {
+ int index = _valueIndices[i];
+ Object v1 = o1[index];
+ Object v2 = o2[index];
+ int result;
+ if (_useDoubleComparison[i]) {
Review Comment:
Actually nvm... it may then have to dereference the actual comparator anyway
for dynamic dispatch. So probably not worth it
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