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https://issues.apache.org/jira/browse/FLINK-15600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17323122#comment-17323122
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Flink Jira Bot commented on FLINK-15600:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Further relax the UDF constraints for Java classes
> --------------------------------------------------
>
> Key: FLINK-15600
> URL: https://issues.apache.org/jira/browse/FLINK-15600
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Major
> Labels: stale-assigned
>
> FLINK-12283 already relaxed the UDF constraints for classes which is a big
> usability improvement for Scala users. However, Java users are still facing
> issues when using anonymous inner classes.
> We should allow the following:
> {code}
> tEnv.registerFunction("testi", new ScalarFunction() {
> public String eval(Integer i) {
> return String.valueOf(i);
> }
> });
> {code}
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