snuyanzin commented on code in PR #19637:
URL: https://github.com/apache/flink/pull/19637#discussion_r1145512436
##########
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/operations/utils/ValuesOperationFactory.java:
##########
@@ -197,10 +199,18 @@ private Optional<ResolvedExpression>
convertToExpectedType(
&& targetLogicalType.is(ARRAY)) {
return convertArrayToExpectedType(
sourceExpression, (CollectionDataType) targetDataType,
postResolverFactory);
- } else if (functionDefinition == BuiltInFunctionDefinitions.MAP
- && targetLogicalType.is(MAP)) {
- return convertMapToExpectedType(
- sourceExpression, (KeyValueDataType) targetDataType,
postResolverFactory);
+ } else if (functionDefinition == BuiltInFunctionDefinitions.MAP) {
+ if (targetLogicalType.is(MAP)) {
Review Comment:
It seems the issue is that on api level
`org.apache.flink.table.expressions.ApiExpressionUtils#objectToExpression`
[1][2] translates maps to `MAP`. And both `MAP` and `MULTISET` are represented
as maps there...
[1]
https://github.com/apache/flink/blob/e91eb5ec2fea9a2f28f3f55a06bc140e4ce4b5f5/flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/expressions/ApiExpressionUtils.java#L85-L104
[2]
https://github.com/apache/flink/blob/e91eb5ec2fea9a2f28f3f55a06bc140e4ce4b5f5/flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/expressions/ApiExpressionUtils.java#L126-L137
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