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https://issues.apache.org/jira/browse/FLINK-4086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timo Walther resolved FLINK-4086.
---------------------------------
Resolution: Fixed
Fixed in 429b8443f6daf96d0b581a776c55deb393565915.
> Hide internal Expression methods from Table API
> -----------------------------------------------
>
> Key: FLINK-4086
> URL: https://issues.apache.org/jira/browse/FLINK-4086
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Affects Versions: 1.1.0
> Reporter: Fabian Hueske
> Assignee: Fabian Hueske
> Fix For: 1.1.0
>
>
> Internal methods are accessible from the Table API expressions.
> For instance it is possible to call:
> {code}
> val table: Table = ???
> table.select('name.toRexNode(), ('age + 10).validateInput())
> {code}
> We should hide internal methods like {{toRexNode()}} and {{validateInput()}}
> from the API.
> I propose to restrict access to this methods to objects in the
> {{org.apache.flink}} name space via a {{private\[flink\]}} access modifier.
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