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https://issues.apache.org/jira/browse/FLINK-16727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jark Wu reassigned FLINK-16727:
-------------------------------
Assignee: Jark Wu
> cannot cast 2020-11-12 as class java.time.LocalDate
> ---------------------------------------------------
>
> Key: FLINK-16727
> URL: https://issues.apache.org/jira/browse/FLINK-16727
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.10.0
> Environment: [^Flinktest.zip]
> Reporter: Matrix42
> Assignee: Jark Wu
> Priority: Major
> Fix For: 1.10.1, 1.11.0
>
> Attachments: Flinktest.zip
>
>
> I defined as ScalarFunction as follow:
>
> {code:java}
> public class DateFunc extends ScalarFunction {
> public String eval(Date date) {
> return date.toString();
> }
> @Override
> public TypeInformation<?> getResultType(Class<?>[] signature) {
> return Types.STRING;
> }
> @Override
> public TypeInformation<?>[] getParameterTypes(Class<?>[] signature) {
> return new TypeInformation[]{Types.INT};
> }
> }
> {code}
> I ues it in sql: `select func(DATE '2020-11-12') as a from source` , Flink
> throws 'cannot cast 2020-11-12 as class java.time.LocalDate '
>
> The full code is in the [^Flinktest.zip] Main class is
> com.lorinda.template.TestDateFunction
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