hsyuan commented on a change in pull request #1383: [CALCITE-3254] Exception
while deserializing of interval type or with empty partition/order key for
RexOver
URL: https://github.com/apache/calcite/pull/1383#discussion_r341904131
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File path: core/src/main/java/org/apache/calcite/rel/externalize/RelJson.java
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@@ -454,9 +462,14 @@ RexNode toRex(RelInput relInput, Object o) {
if (window != null) {
final SqlAggFunction operator = toAggregation(relInput, op, opMap);
final RelDataType type = toType(typeFactory, jsonType);
- final List<RexNode> partitionKeys = toRexList(relInput, (List)
window.get("partition"));
- final List<RexFieldCollation> orderKeys =
- toRexFieldCollationList(relInput, (List) window.get("order"));
+ List<RexNode> partitionKeys = new ArrayList<>();
+ if (window.containsKey("partition")) {
+ partitionKeys = toRexList(relInput, (List)
window.get("partition"));
+ }
+ List<RexFieldCollation> orderKeys = new ArrayList<>();
Review comment:
Can you make partitionKeys and orderKeys `final`?
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