[jira] [Assigned] (ARROW-10865) [Rust][DataFusion] More ergonomic conversion between Schema, SchemaRef, DFSchema, and DFSchemaRef

["Andrew Lamb (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-10865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Lamb reassigned ARROW-10865:
-----------------------------------

    Assignee: Andrew Lamb

> [Rust][DataFusion] More ergonomic conversion between Schema, SchemaRef, DFSchema, and DFSchemaRef
> -------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-10865
>                 URL: https://issues.apache.org/jira/browse/ARROW-10865
>             Project: Apache Arrow
>          Issue Type: Improvement
>            Reporter: Andrew Lamb
>            Assignee: Andrew Lamb
>            Priority: Major
>
> https://github.com/apache/arrow/pull/8839 added a DFSchema wrapper object into DataFusion so we can represent multiple relations (e.g. tables) easily
> However, it is somewhat annyoing to use now (as I discovered while trying to update IOx to use the latest version of Arrow).
> Specifically, there are things like this:
> ```
> Arc::new(DFSchema::from(&parquet.schema())?),
> ```
> Instead I would like to be able to write
> ```
> parquet.schema().try_into()?
> ```
> There are several other conversions I would like to be able to use the standard Rust into  or `try_into` for:
> Schema -> DFSchema
> Schema -> Arc<DFSchema>
> Arc<Schema> -> DFSchema
> Arc<Schema> -> Arc<DFSchema>
> DFSchema -> Schema
> DFSchema -> Arc<Schema>
> Arc<DFSchema> -> Schema
> Arc<DFSchema> -> Arc<Schema>



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