[jira] [Assigned] (FLINK-34055) Introduce a new annotation for named parameters

["Shengkai Fang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-34055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shengkai Fang reassigned FLINK-34055:
-------------------------------------

    Assignee: Feng Jin

> Introduce a new annotation for named parameters
> -----------------------------------------------
>
>                 Key: FLINK-34055
>                 URL: https://issues.apache.org/jira/browse/FLINK-34055
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Planner
>            Reporter: Feng Jin
>            Assignee: Feng Jin
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.19.0
>
>
> Introduce a new annotation to specify the parameter name, indicate if it is optional, and potentially support specifying default values in the future.
> Deprecate the argumentNames method in FunctionHints as it is not user-friendly for specifying argument names with optional configuration.
>  
> {code:java}
> public @interface ArgumentHint {
>     /**
>      * The name of the parameter, default is an empty string.
>      */
>     String name() default "";
>  
>     /**
>      * Whether the parameter is optional, default is false.
>      */
>     boolean isOptional() default false;
>  
>     /**
>      * The data type hint for the parameter.
>      */
>     DataTypeHint type() default @DataTypeHint();
> }
> {code}
> {code:java}
> public @interface FunctionHint {
>   
>     /**
>      * Deprecated attribute for specifying the names of the arguments.
>      * It is no longer recommended to use this attribute.
>      */
>     @Deprecated
>     String[] argumentNames() default {""};
>   
>     /**
>      * Attribute for specifying the hints and additional information for function arguments.
>      */
>     ArgumentHint[] arguments() default {};
> }
> {code}



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