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Posted to issues@calcite.apache.org by "Vladimir Sitnikov (Jira)" <ji...@apache.org> on 2020/11/14 21:51:00 UTC
[jira] [Assigned] (CALCITE-4371) TableMacro and TableFunction
should have List rather than List
[ https://issues.apache.org/jira/browse/CALCITE-4371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vladimir Sitnikov reassigned CALCITE-4371:
------------------------------------------
Assignee: (was: Vladimir Sitnikov)
> TableMacro and TableFunction should have List<? extends Objects> rather than List<Object> parameters
> ----------------------------------------------------------------------------------------------------
>
> Key: CALCITE-4371
> URL: https://issues.apache.org/jira/browse/CALCITE-4371
> Project: Calcite
> Issue Type: Sub-task
> Components: core
> Affects Versions: 1.26.0
> Reporter: Vladimir Sitnikov
> Priority: Major
>
> Currently, the functions are declared as follows:
> {code:java}public interface TableMacro extends Function {
> /**
> * Applies arguments to yield a table.
> *
> * @param arguments Arguments
> * @return Table
> */
> TranslatableTable apply(List<Object> arguments);
> }
> {code}
> That means the method can't be called with {{List<String>}} parameter.
> It makes sense to adjust the parameter type to {{List<? extends Object>}}, then the call with {{List<String>}} would succeed.
> Note: this is source-incompatible change. So all the classes that implement TableMacro and TableFunction would need to be adjusted.
> Calcite codebase has <10 such classes, so I believe it should be ok.
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