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https://issues.apache.org/jira/browse/FLINK-17683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xintong Song updated FLINK-17683:
---------------------------------
Fix Version/s: 1.18.0
(was: 1.17.0)
> Pojo with no-args constructor will be treated as ROW when returned by
> ScalarFunction， but not when it is a field of case class.
> -------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-17683
> URL: https://issues.apache.org/jira/browse/FLINK-17683
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.10.1
> Reporter: xiemeilong
> Priority: Minor
> Labels: auto-deprioritized-major, auto-unassigned
> Fix For: 1.18.0
>
>
> Pojo.java
> {code:java}
> @Data
> @NoArgsConstructor
> public class Pojo {
> private String foo;
> }
> {code}
> {code:java}
> object Fun extends ScalarFunction {
> def eval(): Pojo = { new Pojo() }
> }
> case class CaseClass(pojo:Pojo)
> {code}
>
>
> {code:java}
> tableEnv.registerFunction("fun", Fun)
> val table = tableEnv.sqlQuery("select fun() as pojo")
> table.toRetractStream[CaseClass].print()
> {code}
>
> exception:
>
> {code:java}
> Exception in thread "main" org.apache.flink.table.api.ValidationException:
> Field types of query result and registered TableSink do not match.
> Query schema: [pojo: ROW<`foo` STRING>]
> Sink schema: [pojo: LEGACY('STRUCTURED_TYPE', 'POJO<com.yunmo.iot.Pojo>')]
> {code}
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