[jira] [Resolved] (ARROW-13119) [R] Set empty schema in scalar Expressions

["Ian Cook (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-13119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ian Cook resolved ARROW-13119.
------------------------------
    Resolution: Fixed

Resolved by https://github.com/apache/arrow/pull/10563

> [R] Set empty schema in scalar Expressions
> ------------------------------------------
>
>                 Key: ARROW-13119
>                 URL: https://issues.apache.org/jira/browse/ARROW-13119
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: R
>            Reporter: Ian Cook
>            Assignee: Ian Cook
>            Priority: Major
>             Fix For: 5.0.0
>
>
> Closely related to ARROW-13117 is the problem of {{type()}} and {{type_id()}} not working for scalar expressions. For example, currently this happens:
> {code:r}> Expression$scalar("foo")$type()
> Error: !is.null(schema) is not TRUE
> > Expression$scalar(42L)$type()
> Error: !is.null(schema) is not TRUE{code}
> This is what we want to happen:
> {code:r}> Expression$scalar("foo")$type()
> Utf8
> string
> > Expression$scalar(42L)$type()
> Int32
> int32{code}
> This is simple to solve; we just need to set {{schema}} to an empty schema for all scalar expressions.



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