[jira] [Updated] (DRILL-927) Run-time code generation support when a function parameter is complex nested type.

["Jinfeng Ni (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jinfeng Ni updated DRILL-927:
-----------------------------

    Attachment: DRILL-927.1.patch

> Run-time code generation support when a function parameter is complex nested type.
> ----------------------------------------------------------------------------------
>
>                 Key: DRILL-927
>                 URL: https://issues.apache.org/jira/browse/DRILL-927
>             Project: Apache Drill
>          Issue Type: New Feature
>            Reporter: Jinfeng Ni
>            Assignee: Jinfeng Ni
>         Attachments: DRILL-927.1.patch
>
>
> In this JIRA, we will enhance the run-time code generation component, in the following ways:
> 1. Allow generate the run-time code for function whose parameter is FieldReader.  A parameter FieldReader could match an argument of Repeated List, Repeated Map, or an element in Repeated List/map, or any nested complex type.
> 2. In addition, FieldReader will also match any singular value, such as int, float4, varchar. 
> With this support enabled,  one could implement a function with parameter FieldReader to match any simple or complex nested type.
> As an example of how to leverage this new code generation logic, we add a new function "convert_toJson", which will convert any simple or complex type into a string in json format. 
>     @Param FieldReader input;
>     @Output VarBinaryHolder out;



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