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Posted to issues@flink.apache.org by "wuwenchi (Jira)" <ji...@apache.org> on 2022/04/28 06:46:00 UTC

[jira] [Updated] (FLINK-27434) How to change 'Schema' and then convert to 'ResolvedSchema'?

     [ https://issues.apache.org/jira/browse/FLINK-27434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

wuwenchi updated FLINK-27434:
-----------------------------
    Summary: How to change 'Schema'  and then convert to 'ResolvedSchema'?  (was: How to get CatalogManager.schemaResolver from Catalog.alterTable interface？)

> How to change 'Schema'  and then convert to 'ResolvedSchema'?
> -------------------------------------------------------------
>
>                 Key: FLINK-27434
>                 URL: https://issues.apache.org/jira/browse/FLINK-27434
>             Project: Flink
>          Issue Type: Technical Debt
>          Components: Table SQL / API
>    Affects Versions: 1.14.4
>            Reporter: wuwenchi
>            Priority: Major
>
> I would like to support watermarks and computed columns in iceberg and put expressions for these properties into iceberg table properties. So when the user is modifying the corresponding expression, how can I verify the correctness of the expression?
> I want to do a build with  'Schema'  and then convert to 'ResolvedSchema', but I can't get the 'schemaResolver' which is a primary member of CatalogManager.
> So, how do I get schemaResolver? Or is there an interface in flink that provides expression verification function for watermarks and computed columns?
>  
>  



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